1200 lines
45 KiB
Python
1200 lines
45 KiB
Python
"""上传视频提炼 —— 参考视频 → 可人工逐镜编辑的中文分镜稿。
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优先把**完整视频(含音轨)**内联给 Gemini 3.1 Pro,跟官网「直接上传视频」同一条能力:
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模型能看全片、听口播,不会只拿到稀疏静帧。文件太大塞不进请求时,才退回 ffmpeg 抽帧。
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拆视频必须会看视频/图。默认语言模型现在可能是纯文本豆包,不能用 get_default_model(TEXT)。
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固定钉 Gemini 3.1 Pro 官转(``gemini-3.1-pro-preview``,展示名带「官转」优先)。
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"""
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from __future__ import annotations
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import base64
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import json
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import logging
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import math
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import re
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import shutil
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import subprocess
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import tempfile
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import uuid
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from dataclasses import dataclass
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from functools import lru_cache
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from pathlib import Path
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logger = logging.getLogger(__name__)
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from django.conf import settings
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# 上传限制:超了直接 400,不进 ffmpeg,也不花模型钱
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ALLOWED_SUFFIXES = (".mp4", ".mov", ".m4v", ".webm")
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MAX_UPLOAD_BYTES = 200 * 1024 * 1024 # 200 MB
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MAX_DURATION_SECONDS = 180 # 3 分钟。带货参考片远短于此;更长的帧采样密度不够,拆出来也是错的
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# 官网直接传视频的上限大约是请求 20MB;base64 会胀到 4/3,所以原文件卡在 15MB。
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INLINE_VIDEO_MAX_BYTES = 15 * 1024 * 1024
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_SUFFIX_MIME = {
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".mp4": "video/mp4",
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".m4v": "video/mp4",
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".mov": "video/quicktime",
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".webm": "video/webm",
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}
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# 抽帧只在整段视频塞不进请求时启用。
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SECONDS_PER_FRAME = 2
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MIN_FRAMES = 8
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MAX_FRAMES = 36
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FRAME_WIDTH = 768
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FRAME_QUALITY = 3
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DIGEST_MAX_TOKENS = 12288
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_SHOT_MARK = re.compile(r"【(?:镜头\s*\d+|第\s*\d+\s*镜)】")
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_FFMPEG_TIMEOUT = 60
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class VideoDigestError(ValueError):
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"""用户可见的失败(文件不合格 / ffmpeg 读不动),一律 400。"""
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@dataclass(frozen=True)
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class VideoFrame:
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at_seconds: int
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jpeg: bytes
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def as_data_url(self) -> str:
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return "data:image/jpeg;base64," + base64.b64encode(self.jpeg).decode("ascii")
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@dataclass(frozen=True)
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class DigestVideo:
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mime: str
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data: bytes
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def as_data_url(self) -> str:
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return f"data:{self.mime};base64," + base64.b64encode(self.data).decode("ascii")
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# --------------------------------------------------------------------------- #
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# skill 加载
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# --------------------------------------------------------------------------- #
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def _skill_dir() -> Path:
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"""与 script_agent._skill_dir 同源:优先 BASE_DIR/skills(镜像内),回落仓库根(本地旧布局)。"""
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base = Path(settings.BASE_DIR)
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for cand in (base / "skills", base.parent.parent / "skills"):
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if (cand / "video-shot-digest").is_dir():
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return cand / "video-shot-digest"
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return base / "skills" / "video-shot-digest"
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@lru_cache(maxsize=1)
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def load_digest_skill() -> str:
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main = _skill_dir() / "SKILL.md"
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if main.exists():
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return main.read_text(encoding="utf-8")
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# 兜底:skill 丢了也别整条链路挂掉,退化成一句话提示词(产出会明显变差,交接文档已注明须带 skills 目录)
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return (
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"你是分镜拆解 agent。输入是一条短视频的完整文件,含画面和音轨。"
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"必须覆盖全片,从 00:00 写到片尾,有几镜写几镜,不要概括成几大段。"
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"每镜按【镜头 01】写出时间、时长、景别、机位、运镜、画面、人物动作、人物表情、"
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"台词/旁白、音效、背景音乐、字幕、备注。没有就写无。输出中文纯文本。"
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)
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# --------------------------------------------------------------------------- #
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# ffmpeg:探时长 + 抽帧
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# --------------------------------------------------------------------------- #
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def _binary(name: str) -> str:
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found = shutil.which(name)
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if not found:
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raise VideoDigestError("服务器暂时无法解析视频,请稍后再试")
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return found
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def probe_duration(path: str | Path) -> float:
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"""ffprobe 读时长(秒)。读不到 = 不是能解的视频。"""
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try:
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out = subprocess.run(
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[
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_binary("ffprobe"), "-v", "error",
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"-print_format", "json", "-show_format",
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str(path),
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],
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capture_output=True, timeout=_FFMPEG_TIMEOUT, check=True,
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).stdout
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duration = float(json.loads(out)["format"]["duration"])
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except VideoDigestError:
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raise
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except Exception as exc: # noqa: BLE001 — ffprobe 各种失败对用户是同一件事
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raise VideoDigestError("这个视频读不出来,请换一个 mp4 / mov 文件") from exc
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if duration <= 0:
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raise VideoDigestError("这个视频读不出来,请换一个 mp4 / mov 文件")
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return duration
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def probe_video_size(path: str | Path) -> tuple[int, int]:
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"""ffprobe 读画面宽高。读不到返回 0,0,不挡拆解。"""
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try:
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out = subprocess.run(
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[
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_binary("ffprobe"), "-v", "error",
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"-select_streams", "v:0",
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"-show_entries", "stream=width,height",
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"-of", "csv=p=0:s=x",
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str(path),
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],
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capture_output=True, timeout=_FFMPEG_TIMEOUT, check=True,
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).stdout.decode("utf-8", errors="replace").strip()
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width_s, height_s = out.split("x", 1)
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return max(0, int(width_s)), max(0, int(height_s))
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except Exception: # noqa: BLE001
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return 0, 0
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def extract_cover_jpeg(path: str | Path, duration: float) -> bytes:
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"""抽一帧作历史封面。失败返回空字节,不挡拆解。"""
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try:
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ffmpeg = _binary("ffmpeg")
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except VideoDigestError:
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return b""
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at = max(0.0, min(float(duration) * 0.35, max(0.0, float(duration) - 0.15)))
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try:
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done = subprocess.run(
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[
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ffmpeg, "-v", "error", "-ss", f"{at:.2f}", "-i", str(path),
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"-frames:v", "1", "-vf", "scale=640:-2",
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"-q:v", "4", "-f", "image2", "-",
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],
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capture_output=True, timeout=_FFMPEG_TIMEOUT, check=True,
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)
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except Exception: # noqa: BLE001
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return b""
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return done.stdout or b""
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def ratio_label(width: int, height: int) -> str:
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if not width or not height:
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return ""
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ratio = width / height
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if abs(ratio - 9 / 16) < 0.08:
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return "9:16 竖屏"
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if abs(ratio - 16 / 9) < 0.08:
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return "16:9 横屏"
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if abs(ratio - 1) < 0.08:
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return "1:1"
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return "横屏" if width > height else "竖屏"
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def title_from_filename(name: str) -> str:
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stem = Path(name or "").stem.strip()
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return (stem or "参考视频")[:80]
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def duration_clock(seconds: float) -> str:
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total = max(0, int(round(float(seconds or 0))))
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return f"{total // 60:02d}:{total % 60:02d}"
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def shot_count(text: str) -> int:
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return len(_SHOT_MARK.findall(text or ""))
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def plan_frame_times(duration: float) -> list[int]:
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"""均匀采样时间点。取每段的**中点**,避开首尾黑场与片尾卡片。"""
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count = max(MIN_FRAMES, min(MAX_FRAMES, math.ceil(duration / SECONDS_PER_FRAME)))
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step = duration / count
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return [int(step * (i + 0.5)) for i in range(count)]
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def extract_frames(path: str | Path, times: list[int]) -> list[VideoFrame]:
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"""逐时间点抽一帧。``-ss`` 放在 ``-i`` 前走关键帧快速定位,每帧约几十毫秒。"""
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ffmpeg = _binary("ffmpeg")
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frames: list[VideoFrame] = []
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for at in times:
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try:
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done = subprocess.run(
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[
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ffmpeg, "-v", "error", "-ss", str(at), "-i", str(path),
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"-frames:v", "1", "-vf", f"scale={FRAME_WIDTH}:-2",
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"-q:v", str(FRAME_QUALITY), "-f", "image2", "-",
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],
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capture_output=True, timeout=_FFMPEG_TIMEOUT, check=True,
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)
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except Exception: # noqa: BLE001 — 单帧抽失败(定位越界等)跳过,别拖垮整次提炼
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continue
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if done.stdout:
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frames.append(VideoFrame(at_seconds=at, jpeg=done.stdout))
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if not frames:
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raise VideoDigestError("没能从这个视频里取到画面,请换一个文件")
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return frames
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def _write_upload(upload) -> tuple[str, str, int]:
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"""校验后缀和体积,把上传落到临时文件。返回 (path, suffix, size)。调用方负责删除。"""
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name = (getattr(upload, "name", "") or "").lower()
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if not name.endswith(ALLOWED_SUFFIXES):
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raise VideoDigestError("只支持 mp4 / mov / m4v / webm 四种视频格式")
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size = getattr(upload, "size", 0) or 0
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if size > MAX_UPLOAD_BYTES:
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raise VideoDigestError(f"视频不能超过 {MAX_UPLOAD_BYTES // 1024 // 1024} MB,请压缩后再传")
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suffix = Path(name).suffix or ".mp4"
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tmp = tempfile.NamedTemporaryFile(suffix=suffix, delete=False)
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try:
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for chunk in upload.chunks():
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tmp.write(chunk)
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tmp.flush()
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finally:
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tmp.close()
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return tmp.name, suffix, Path(tmp.name).stat().st_size
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def _materialize_upload(upload) -> tuple[str, str, int, float]:
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"""校验 → 落盘 → 探时长。返回 (path, suffix, size, duration),调用方负责删文件。"""
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path, suffix, size = _write_upload(upload)
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try:
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duration = probe_duration(path)
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except Exception:
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Path(path).unlink(missing_ok=True)
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raise
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if duration > MAX_DURATION_SECONDS:
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Path(path).unlink(missing_ok=True)
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raise VideoDigestError(
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f"视频不能超过 {MAX_DURATION_SECONDS // 60} 分钟,请剪出要参考的那一段再传"
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)
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return path, suffix, size, duration
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def _compress_video(path: str) -> bytes | None:
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"""压到能内联的体积。失败返回 None,由调用方改抽帧。"""
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ffmpeg = _binary("ffmpeg")
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out = tempfile.NamedTemporaryFile(suffix=".mp4", delete=False)
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out.close()
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try:
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done = subprocess.run(
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[
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ffmpeg, "-v", "error", "-y", "-i", path,
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"-c:v", "libx264", "-preset", "veryfast", "-crf", "28",
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"-vf", "scale='min(1280,iw)':-2",
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"-c:a", "aac", "-b:a", "64k",
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"-movflags", "+faststart", out.name,
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],
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capture_output=True, timeout=_FFMPEG_TIMEOUT * 3,
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)
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if done.returncode != 0:
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return None
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data = Path(out.name).read_bytes()
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if not data or len(data) > INLINE_VIDEO_MAX_BYTES:
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return None
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return data
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except Exception: # noqa: BLE001 — 压缩失败就抽帧,别挡住提炼
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return None
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finally:
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Path(out.name).unlink(missing_ok=True)
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def _is_browser_playable(path: str) -> bool:
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"""Chrome 播不了微信常见的 HEVC。H.264 + AAC/无音轨才直接存。"""
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try:
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out = subprocess.run(
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[
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_binary("ffprobe"), "-v", "error",
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"-show_entries", "stream=codec_name,codec_type",
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"-of", "json",
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str(path),
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],
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capture_output=True, timeout=_FFMPEG_TIMEOUT, check=True,
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)
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streams = json.loads(out.stdout).get("streams") or []
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except Exception: # noqa: BLE001
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return False
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video_ok = False
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audio_ok = True
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for stream in streams:
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kind = stream.get("codec_type")
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codec = str(stream.get("codec_name") or "").lower()
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if kind == "video":
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video_ok = codec in {"h264", "vp8", "vp9", "av1"}
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elif kind == "audio":
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audio_ok = codec in {"aac", "mp3", "opus", "vorbis"}
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return video_ok and audio_ok
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def _prepare_browser_video(path: str, suffix: str) -> tuple[str, str, bool]:
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"""转成浏览器能播的 H.264 AAC。失败退回原片。第三项表示调用方要删临时文件。"""
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ext = suffix if str(suffix).startswith(".") else f".{suffix or 'mp4'}"
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if _is_browser_playable(path):
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return path, ext, False
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ffmpeg = _binary("ffmpeg")
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out = tempfile.NamedTemporaryFile(suffix=".mp4", delete=False)
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out.close()
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try:
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done = subprocess.run(
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[
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ffmpeg, "-v", "error", "-y", "-i", path,
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"-c:v", "libx264", "-preset", "veryfast", "-crf", "23",
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"-c:a", "aac", "-b:a", "128k",
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"-movflags", "+faststart", out.name,
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],
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capture_output=True, timeout=_FFMPEG_TIMEOUT * 3,
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)
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if done.returncode != 0 or not Path(out.name).is_file() or Path(out.name).stat().st_size <= 0:
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Path(out.name).unlink(missing_ok=True)
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return path, ext, False
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return out.name, ".mp4", True
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except Exception: # noqa: BLE001 — 转码失败仍存原片,总比历史卡不能播好
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Path(out.name).unlink(missing_ok=True)
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return path, ext, False
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def _native_video(path: str, size: int, suffix: str) -> DigestVideo | None:
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mime = _SUFFIX_MIME.get(suffix.lower(), "video/mp4")
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if size <= INLINE_VIDEO_MAX_BYTES:
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return DigestVideo(mime=mime, data=Path(path).read_bytes())
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compressed = _compress_video(path)
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if compressed:
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return DigestVideo(mime="video/mp4", data=compressed)
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return None
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def digest_input_from_upload(
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upload,
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*,
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keep_source: bool = False,
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) -> tuple[DigestVideo | None, list[VideoFrame], float, dict]:
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"""优先整段视频(含音轨);塞不进请求才抽帧。顺带抽出历史卡要用的封面/宽高。
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keep_source=True 时不删临时文件,调用方上传原片后再删。
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"""
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path = ""
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keep = False
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original_name = Path(getattr(upload, "name", "") or "参考视频.mp4").name or "参考视频.mp4"
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try:
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path, suffix, size, duration = _materialize_upload(upload)
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width, height = probe_video_size(path)
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cover_jpeg = extract_cover_jpeg(path, duration)
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video = _native_video(path, size, suffix)
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frames = [] if video is not None else extract_frames(path, plan_frame_times(duration))
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extras = {
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"file_name": original_name,
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"file_size": size,
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"width": width,
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"height": height,
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"cover_jpeg": cover_jpeg,
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"suffix": suffix,
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"source_path": path if keep_source else "",
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}
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keep = keep_source
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return video, frames, duration, extras
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finally:
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if path and not keep:
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Path(path).unlink(missing_ok=True)
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def frames_from_upload(upload) -> tuple[list[VideoFrame], float]:
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"""校验上传文件 → 落临时盘 → 探时长 → 抽帧。单测与抽帧兜底用。"""
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path = ""
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try:
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path, _suffix, _size, duration = _materialize_upload(upload)
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return extract_frames(path, plan_frame_times(duration)), duration
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finally:
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if path:
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Path(path).unlink(missing_ok=True)
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# --------------------------------------------------------------------------- #
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# 组装多模态消息
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# --------------------------------------------------------------------------- #
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def build_digest_messages(
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frames: list[VideoFrame] | None = None,
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duration: float = 0,
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*,
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product_hint: str = "",
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video: DigestVideo | None = None,
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aspect_ratio: str = "",
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file_title: str = "",
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) -> list[dict]:
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"""system = 拆解 skill;user = 完整视频(优先)或抽帧。"""
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frames = frames or []
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measured = f"实测时长约 {round(duration)} 秒"
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if aspect_ratio:
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measured += f",画面比例 {aspect_ratio}"
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title_hint = f"文件名可参考片名:《{file_title}》。" if file_title else ""
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if video is not None:
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head = [
|
|
f"这是一条{measured}的短视频**完整文件**(含画面和口播音轨)。{title_hint}",
|
|
"请按技能还原全片导演分镜稿:从 00:00 写到片尾,有几镜写几镜。",
|
|
"每镜必须写齐时间、时长、景别、机位、运镜、画面、人物动作、人物表情、台词/旁白、音效、背景音乐、字幕、备注。",
|
|
"台词/旁白按听到的口播逐字写;画面上的花字写进字幕。",
|
|
]
|
|
else:
|
|
head = [
|
|
f"这是一条{measured}的短视频,",
|
|
f"按时间顺序均匀抽了 {len(frames)} 帧。每帧图前面标了它在原片中的时间点。{title_hint}",
|
|
"请按技能还原**全片**导演分镜稿:从 00:00 写到片尾,有几镜写几镜。",
|
|
"每镜必须写齐时间、时长、景别、机位、运镜、画面、人物动作、人物表情、台词/旁白、音效、背景音乐、字幕、备注。",
|
|
]
|
|
if product_hint:
|
|
head.append(f"用户接下来想用这条片子的结构去拍自己的商品:{product_hint}。")
|
|
|
|
content: list[dict] = [{"type": "text", "text": "".join(head)}]
|
|
if video is not None:
|
|
data_url = video.as_data_url()
|
|
# 官转(New-API)把 OpenAI image_url 的 data URI 转成 Gemini inline_data,
|
|
# mime 从 data:video/mp4 头读取,模型按整段视频+音轨理解,等同官网直接上传。
|
|
content.append({"type": "image_url", "image_url": {"url": data_url}})
|
|
else:
|
|
for frame in frames:
|
|
content.append({"type": "text", "text": f"[第 {frame.at_seconds} 秒]"})
|
|
content.append({"type": "image_url", "image_url": {"url": frame.as_data_url()}})
|
|
return [
|
|
{"role": "system", "content": load_digest_skill()},
|
|
{"role": "user", "content": content},
|
|
]
|
|
|
|
|
|
def min_digest_shots(duration: float, frame_count: int) -> int:
|
|
"""短片至少 3 镜;20 秒以上约每 6 秒一镜,且不超过抽到的帧数。"""
|
|
if duration < 20 and frame_count < 8:
|
|
return 3
|
|
by_time = max(4, int(duration // 6))
|
|
if frame_count:
|
|
return min(frame_count, by_time)
|
|
return by_time
|
|
|
|
|
|
def validate_digest_text(text: str, *, duration: float = 0, frame_count: int = 0) -> str:
|
|
"""模型偶尔吐空、只写片头、或概括成几大段。废稿不塞给用户。"""
|
|
cleaned = (text or "").strip()
|
|
if len(cleaned) < 80 or "【" not in cleaned:
|
|
raise ValueError("视频拆解结果不完整")
|
|
shots = _SHOT_MARK.findall(cleaned)
|
|
if not shots:
|
|
raise ValueError("视频拆解结果不完整")
|
|
if duration >= 20 or frame_count >= 8:
|
|
needed = min_digest_shots(duration, frame_count)
|
|
if len(shots) < needed:
|
|
raise ValueError("视频拆解镜头过少,请重试")
|
|
return cleaned
|
|
|
|
|
|
# 拆视频必须会看图。火山豆包直连读不了这组帧图,会在 ARK 上挂满 120s。
|
|
# 只认中转站的 Gemini 3.1 Pro;展示名带「官转」的优先。
|
|
DIGEST_VISION_MODEL_NAME = "gemini-3.1-pro-preview"
|
|
|
|
|
|
def _is_digest_vision_model(model) -> bool:
|
|
from apps.ai.services import OFFICIAL_DIRECT_PROVIDERS
|
|
|
|
provider_name = getattr(getattr(model, "provider", None), "name", "") or ""
|
|
if provider_name in OFFICIAL_DIRECT_PROVIDERS:
|
|
return False
|
|
blob = f"{model.name} {model.display_name}".lower()
|
|
return (
|
|
model.name == DIGEST_VISION_MODEL_NAME
|
|
or "gemini-3.1" in blob
|
|
or "gemini 3.1" in blob
|
|
)
|
|
|
|
|
|
def resolve_digest_model_config(preferred_id=None):
|
|
"""视频提炼用的多模态文本模型:Gemini 3.1 Pro 官转。找不到不回落默认语言模型。
|
|
|
|
前端可传 model_config_id(跟生成脚本同一套下拉)。只有会看图的 Gemini 3.1 才认,
|
|
选了豆包等纯文本模型仍钉回官转,避免拆帧直接失败。
|
|
"""
|
|
from apps.ai.models import ModelConfig
|
|
|
|
qs = (
|
|
ModelConfig.objects.select_related("provider")
|
|
.filter(
|
|
capability=ModelConfig.Capability.TEXT,
|
|
status=ModelConfig.Status.ACTIVE,
|
|
provider__status="active",
|
|
)
|
|
)
|
|
if preferred_id:
|
|
chosen = qs.filter(pk=preferred_id).first()
|
|
if chosen is not None and _is_digest_vision_model(chosen):
|
|
return chosen
|
|
|
|
def _blob(model) -> str:
|
|
return " ".join(
|
|
filter(
|
|
None,
|
|
[
|
|
model.name,
|
|
model.display_name,
|
|
getattr(model.provider, "name", ""),
|
|
getattr(model.provider, "display_name", ""),
|
|
],
|
|
)
|
|
)
|
|
|
|
ranked = []
|
|
for model in qs:
|
|
if not _is_digest_vision_model(model):
|
|
continue
|
|
blob = _blob(model)
|
|
# 官转 > 精确模型名 > 其它 Gemini 3.1
|
|
score = 0
|
|
if "官转" in blob:
|
|
score += 100
|
|
if model.name == DIGEST_VISION_MODEL_NAME:
|
|
score += 20
|
|
if getattr(model.provider, "name", "") == "yunqi_gemini":
|
|
score += 5
|
|
ranked.append((score, model.created_at, model))
|
|
if not ranked:
|
|
return None
|
|
ranked.sort(key=lambda item: (-item[0], item[1]))
|
|
return ranked[0][2]
|
|
|
|
|
|
# --------------------------------------------------------------------------- #
|
|
# 入口:一次真实的计费调用
|
|
# --------------------------------------------------------------------------- #
|
|
def digest_project_video(*, project, user, upload, model_config_id=None) -> dict:
|
|
"""上传视频 → 分镜稿。抽帧在建任务之前做,文件不合格不占积分。"""
|
|
product = getattr(project, "product", None)
|
|
return _digest_video(
|
|
team=project.team,
|
|
user=user,
|
|
upload=upload,
|
|
project=project,
|
|
product_hint=" · ".join(
|
|
filter(None, [getattr(product, "title", ""), getattr(product, "category", "")])
|
|
),
|
|
model_config_id=model_config_id,
|
|
)
|
|
|
|
|
|
def digest_team_video(*, team, user, upload, model_config_id=None) -> dict:
|
|
"""视频提炼页:不绑项目,计费挂当前团队。"""
|
|
return _digest_video(
|
|
team=team,
|
|
user=user,
|
|
upload=upload,
|
|
project=None,
|
|
product_hint="",
|
|
model_config_id=model_config_id,
|
|
)
|
|
|
|
|
|
def _store_digest_cover(*, team, jpeg: bytes) -> tuple[str, str]:
|
|
"""封面传到 TOS。失败返回空,历史卡走占位底。"""
|
|
from io import BytesIO
|
|
|
|
from apps.assets.storage import TosStorage
|
|
|
|
if not jpeg:
|
|
return "", ""
|
|
key = f"teams/{team.id}/video-digest/{uuid.uuid4()}.jpg"
|
|
storage = TosStorage()
|
|
stored = storage.upload_fileobj(fileobj=BytesIO(jpeg), object_key=key, content_type="image/jpeg")
|
|
return stored.object_key, storage.public_url(object_key=stored.object_key)
|
|
|
|
|
|
def _store_digest_video(*, team, path: str, suffix: str) -> tuple[str, str]:
|
|
"""原片(优先转成 H.264)传到 TOS,历史封面点击才能播。失败返回空,不挡拆解。"""
|
|
from apps.assets.storage import TosStorage
|
|
|
|
if not path or not Path(path).is_file():
|
|
return "", ""
|
|
upload_path, ext, ephemeral = _prepare_browser_video(path, suffix)
|
|
try:
|
|
if ext.lower() not in ALLOWED_SUFFIXES:
|
|
ext = ".mp4"
|
|
mime = _SUFFIX_MIME.get(ext.lower(), "video/mp4")
|
|
key = f"teams/{team.id}/video-digest/{uuid.uuid4()}{ext.lower()}"
|
|
storage = TosStorage()
|
|
with Path(upload_path).open("rb") as fileobj:
|
|
stored = storage.upload_fileobj(fileobj=fileobj, object_key=key, content_type=mime)
|
|
return stored.object_key, storage.public_url(object_key=stored.object_key)
|
|
finally:
|
|
if ephemeral:
|
|
Path(upload_path).unlink(missing_ok=True)
|
|
|
|
|
|
def _media_url_from_payload(req: dict, url_key: str, object_key_name: str, *, signed: bool = False) -> str:
|
|
stored = str(req.get(url_key) or "").strip()
|
|
key = str(req.get(object_key_name) or "").strip()
|
|
if not key:
|
|
return stored
|
|
try:
|
|
from apps.assets.storage import TosStorage
|
|
|
|
storage = TosStorage()
|
|
if signed:
|
|
return storage.presigned_get_url(object_key=key, expires_in=6 * 3600)
|
|
return storage.public_url(object_key=key)
|
|
except Exception: # noqa: BLE001
|
|
return stored
|
|
|
|
|
|
def serialize_digest_history(task) -> dict:
|
|
from django.utils import timezone
|
|
|
|
from apps.ai.models import AITask
|
|
|
|
req = task.request_payload or {}
|
|
resp = task.response_payload or {}
|
|
prompt = str(resp.get("prompt") or resp.get("digest") or "").strip()
|
|
duration = float(req.get("duration_seconds") or 0)
|
|
file_name = str(req.get("file_name") or "") or "参考视频.mp4"
|
|
title = str(req.get("title") or "").strip() or title_from_filename(file_name)
|
|
shots = int(req.get("shot_count") or 0) or shot_count(prompt)
|
|
created = timezone.localtime(task.created_at) if task.created_at else timezone.now()
|
|
return {
|
|
"id": str(task.id),
|
|
"title": title,
|
|
"status": "已完成" if task.status == AITask.Status.SUCCEEDED else "失败",
|
|
"duration": int(round(duration)),
|
|
"duration_label": duration_clock(duration),
|
|
"ratio": str(req.get("ratio") or ""),
|
|
"shots": shots,
|
|
"file_name": file_name,
|
|
"cover_url": _media_url_from_payload(req, "cover_url", "cover_key"),
|
|
"video_url": _media_url_from_payload(req, "video_url", "video_key", signed=True),
|
|
"prompt": prompt,
|
|
"created_at": task.created_at.isoformat() if task.created_at else "",
|
|
"created_date": created.strftime("%Y-%m-%d"),
|
|
}
|
|
|
|
|
|
def list_team_digest_history(*, team, limit: int = 50) -> list[dict]:
|
|
from apps.ai.models import AITask
|
|
|
|
qs = (
|
|
AITask.objects.filter(
|
|
team=team,
|
|
task_type=AITask.Type.VIDEO_DIGEST,
|
|
project__isnull=True,
|
|
status=AITask.Status.SUCCEEDED,
|
|
is_deleted=False,
|
|
purged_at__isnull=True,
|
|
)
|
|
.order_by("-created_at")[: max(1, min(int(limit), 50))]
|
|
)
|
|
return [serialize_digest_history(task) for task in qs]
|
|
|
|
|
|
def save_digest_prompt(*, team, task_id, prompt: str) -> dict | None:
|
|
from apps.ai.models import AITask
|
|
|
|
cleaned = (prompt or "").strip()
|
|
if not cleaned:
|
|
raise VideoDigestError("提示词不能为空")
|
|
task = AITask.objects.filter(
|
|
id=task_id,
|
|
team=team,
|
|
task_type=AITask.Type.VIDEO_DIGEST,
|
|
project__isnull=True,
|
|
is_deleted=False,
|
|
purged_at__isnull=True,
|
|
).first()
|
|
if task is None:
|
|
return None
|
|
payload = dict(task.response_payload or {})
|
|
payload["prompt"] = cleaned[:32000]
|
|
task.response_payload = payload
|
|
task.save(update_fields=["response_payload", "updated_at"])
|
|
return serialize_digest_history(task)
|
|
|
|
|
|
class _FileFromPath:
|
|
def __init__(self, path: str, name: str):
|
|
self.name = name
|
|
self.size = Path(path).stat().st_size
|
|
self._path = path
|
|
|
|
def chunks(self, chunk_size=1024 * 1024):
|
|
with Path(self._path).open("rb") as handle:
|
|
while True:
|
|
data = handle.read(chunk_size)
|
|
if not data:
|
|
break
|
|
yield data
|
|
|
|
|
|
def _store_raw_source(*, team, path: str, suffix: str) -> tuple[str, str]:
|
|
ext = suffix if str(suffix).startswith(".") else f".{suffix or 'mp4'}"
|
|
mime = _SUFFIX_MIME.get(ext.lower(), "video/mp4")
|
|
key = f"teams/{team.id}/video-digest/{uuid.uuid4()}{ext.lower()}"
|
|
from apps.assets.storage import TosStorage
|
|
|
|
storage = TosStorage()
|
|
with Path(path).open("rb") as fileobj:
|
|
stored = storage.upload_fileobj(fileobj=fileobj, object_key=key, content_type=mime)
|
|
return stored.object_key, storage.public_url(object_key=stored.object_key)
|
|
|
|
|
|
def _download_source_to_temp(object_key: str, suffix: str) -> str:
|
|
from apps.assets.storage import TosStorage
|
|
|
|
ext = suffix if str(suffix).startswith(".") else f".{suffix or 'mp4'}"
|
|
storage = TosStorage()
|
|
body = storage.client.get_object(Bucket=storage.bucket, Key=object_key)["Body"].read()
|
|
tmp = tempfile.NamedTemporaryFile(suffix=ext.lower(), delete=False)
|
|
try:
|
|
tmp.write(body)
|
|
tmp.flush()
|
|
finally:
|
|
tmp.close()
|
|
return tmp.name
|
|
|
|
|
|
def serialize_digest_job(task) -> dict:
|
|
from apps.ai.generation_errors import public_error_for_task
|
|
from apps.ai.models import AITask
|
|
|
|
req = task.request_payload or {}
|
|
resp = task.response_payload or {}
|
|
prompt = str(resp.get("prompt") or resp.get("digest") or "").strip()
|
|
inflight = task.status in {
|
|
AITask.Status.CREATED,
|
|
AITask.Status.RESERVED,
|
|
AITask.Status.SUBMITTED,
|
|
AITask.Status.POLLING,
|
|
AITask.Status.POSTPROCESSING,
|
|
}
|
|
if inflight:
|
|
job_status = "processing"
|
|
elif task.status == AITask.Status.SUCCEEDED:
|
|
job_status = "succeeded"
|
|
else:
|
|
job_status = "failed"
|
|
duration = float(req.get("duration_seconds") or 0)
|
|
file_name = str(req.get("file_name") or "") or "参考视频.mp4"
|
|
public_error = public_error_for_task(task, operation="video_digest") if job_status == "failed" else None
|
|
video_url = _media_url_from_payload(req, "video_url", "video_key", signed=True) or _media_url_from_payload(
|
|
req, "source_url", "source_key", signed=True
|
|
)
|
|
return {
|
|
"id": str(task.id),
|
|
"task_id": str(task.id),
|
|
"status": job_status,
|
|
"text": prompt,
|
|
"prompt": prompt,
|
|
"chars": len(prompt),
|
|
"duration": round(duration, 1) if duration else 0,
|
|
"shots": int(req.get("shot_count") or 0) or shot_count(prompt),
|
|
"file_name": file_name,
|
|
"title": str(req.get("title") or "").strip() or title_from_filename(file_name),
|
|
"ratio": str(req.get("ratio") or ""),
|
|
"width": int(req.get("width") or 0),
|
|
"height": int(req.get("height") or 0),
|
|
"cover_url": _media_url_from_payload(req, "cover_url", "cover_key"),
|
|
"video_url": video_url,
|
|
"estimated_cost": str(task.estimated_cost),
|
|
"error_message": (public_error.fallback_message if public_error else "") or str(task.error_message or ""),
|
|
}
|
|
|
|
|
|
def get_team_digest_job(*, team, task_id) -> dict | None:
|
|
from apps.ai.models import AITask
|
|
|
|
task = AITask.objects.filter(
|
|
id=task_id,
|
|
team=team,
|
|
task_type=AITask.Type.VIDEO_DIGEST,
|
|
project__isnull=True,
|
|
is_deleted=False,
|
|
purged_at__isnull=True,
|
|
).first()
|
|
if task is None:
|
|
return None
|
|
return serialize_digest_job(task)
|
|
|
|
|
|
def get_inflight_team_digest(*, team) -> dict | None:
|
|
from apps.ai.models import AITask
|
|
|
|
task = (
|
|
AITask.objects.filter(
|
|
team=team,
|
|
task_type=AITask.Type.VIDEO_DIGEST,
|
|
project__isnull=True,
|
|
is_deleted=False,
|
|
purged_at__isnull=True,
|
|
status__in={
|
|
AITask.Status.CREATED,
|
|
AITask.Status.RESERVED,
|
|
AITask.Status.SUBMITTED,
|
|
AITask.Status.POLLING,
|
|
AITask.Status.POSTPROCESSING,
|
|
},
|
|
)
|
|
.order_by("-created_at")
|
|
.first()
|
|
)
|
|
if task is None:
|
|
return None
|
|
return serialize_digest_job(task)
|
|
|
|
|
|
def submit_team_digest(*, team, user, upload, model_config_id=None) -> dict:
|
|
"""秒回任务 id。慢活(抽帧 + Gemini)交给 worker,离开页面也不中断。"""
|
|
from django.db import transaction
|
|
|
|
from apps.ai.models import AITask
|
|
from apps.ai.tasks import run_video_digest_task
|
|
from apps.billing.pricing import quote_video_digest
|
|
from apps.billing.services.ledger import reserve_credit
|
|
|
|
model_config = resolve_digest_model_config(preferred_id=model_config_id)
|
|
if model_config is None:
|
|
raise VideoDigestError("视频提炼需要 Gemini 3.1 Pro(会看图),当前没有启用,请联系管理员")
|
|
|
|
path, suffix, size, duration = _materialize_upload(upload)
|
|
file_name = Path(getattr(upload, "name", "") or "参考视频.mp4").name or "参考视频.mp4"
|
|
width = height = 0
|
|
source_key = source_url = cover_key = cover_url = ""
|
|
try:
|
|
width, height = probe_video_size(path)
|
|
cover_key, cover_url = _store_digest_cover(team=team, jpeg=extract_cover_jpeg(path, duration))
|
|
source_key, source_url = _store_raw_source(team=team, path=path, suffix=suffix)
|
|
finally:
|
|
Path(path).unlink(missing_ok=True)
|
|
if not source_key:
|
|
raise VideoDigestError("参考视频上传失败，请重试")
|
|
|
|
quote = quote_video_digest(team=team, model_config=model_config)
|
|
request_payload = {
|
|
"model": model_config.name,
|
|
"endpoint": model_config.endpoint,
|
|
"feature": "video_remix",
|
|
"duration_seconds": round(duration, 2),
|
|
"file_name": file_name,
|
|
"title": title_from_filename(file_name),
|
|
"file_size": size,
|
|
"width": width,
|
|
"height": height,
|
|
"ratio": ratio_label(width, height),
|
|
"suffix": suffix,
|
|
"source_key": source_key,
|
|
"source_url": source_url,
|
|
"cover_key": cover_key,
|
|
"cover_url": cover_url,
|
|
}
|
|
if quote.meta.get("rate"):
|
|
request_payload["points_per_yuan_snapshot"] = quote.meta["rate"]
|
|
|
|
try:
|
|
with transaction.atomic():
|
|
task = AITask.objects.create(
|
|
team=team,
|
|
created_by=user,
|
|
project=None,
|
|
task_type=AITask.Type.VIDEO_DIGEST,
|
|
status=AITask.Status.CREATED,
|
|
model_config=model_config,
|
|
idempotency_key=f"video_digest:{team.id}:{uuid.uuid4()}",
|
|
request_payload=request_payload,
|
|
estimated_cost=quote.points,
|
|
base_cost=quote.base_cost_yuan,
|
|
)
|
|
reserve_credit(team=team, user=user, task=task, amount=quote.points)
|
|
task.status = AITask.Status.RESERVED
|
|
task.save(update_fields=["status", "updated_at"])
|
|
except ValueError as exc:
|
|
if "insufficient credit" in str(exc).lower():
|
|
raise VideoDigestError("团队余额不足，请充值后重试") from exc
|
|
raise VideoDigestError(str(exc)) from exc
|
|
|
|
run_video_digest_task.delay(str(task.id))
|
|
return serialize_digest_job(task)
|
|
|
|
|
|
def run_team_digest_task(*, task_id: str) -> None:
|
|
"""Worker:从 TOS 取参考视频,跑抽帧 + Gemini,失败退费。"""
|
|
from django.db import transaction
|
|
from django.utils import timezone
|
|
|
|
from apps.ai.models import AITask
|
|
|
|
task = AITask.objects.select_related("team", "created_by", "model_config", "credit_reservation").filter(
|
|
id=task_id,
|
|
task_type=AITask.Type.VIDEO_DIGEST,
|
|
project__isnull=True,
|
|
).first()
|
|
if task is None:
|
|
return
|
|
if task.status == AITask.Status.SUCCEEDED:
|
|
return
|
|
if task.status not in {AITask.Status.RESERVED, AITask.Status.SUBMITTED}:
|
|
return
|
|
|
|
with transaction.atomic():
|
|
locked = AITask.objects.select_for_update().get(id=task.id)
|
|
if locked.status == AITask.Status.SUCCEEDED:
|
|
return
|
|
if locked.status not in {AITask.Status.RESERVED, AITask.Status.SUBMITTED}:
|
|
return
|
|
locked.status = AITask.Status.SUBMITTED
|
|
locked.submitted_at = locked.submitted_at or timezone.now()
|
|
locked.save(update_fields=["status", "submitted_at", "updated_at"])
|
|
task = locked
|
|
|
|
req = task.request_payload or {}
|
|
source_key = str(req.get("source_key") or "")
|
|
suffix = str(req.get("suffix") or ".mp4")
|
|
file_name = str(req.get("file_name") or "参考视频.mp4")
|
|
if not source_key:
|
|
reservation = getattr(task, "credit_reservation", None)
|
|
_fail_digest_task(task, reservation, "参考视频丢失，请重新上传")
|
|
return
|
|
|
|
local_path = ""
|
|
try:
|
|
local_path = _download_source_to_temp(source_key, suffix)
|
|
upload = _FileFromPath(local_path, file_name)
|
|
_digest_video(
|
|
team=task.team,
|
|
user=task.created_by,
|
|
upload=upload,
|
|
project=None,
|
|
product_hint="",
|
|
model_config_id=str(task.model_config_id) if task.model_config_id else None,
|
|
existing_task=task,
|
|
)
|
|
except Exception as exc: # noqa: BLE001
|
|
logger.exception("async video digest failed for %s", task.id)
|
|
task.refresh_from_db()
|
|
if task.status not in {AITask.Status.SUCCEEDED, AITask.Status.FAILED}:
|
|
reservation = getattr(task, "credit_reservation", None)
|
|
_fail_digest_task(task, reservation, str(exc))
|
|
finally:
|
|
if local_path:
|
|
Path(local_path).unlink(missing_ok=True)
|
|
|
|
|
|
def _digest_video(*, team, user, upload, project=None, product_hint="", model_config_id=None, existing_task=None) -> dict:
|
|
"""上传视频 → 分镜稿。抽帧在建任务之前做,文件不合格不占积分。"""
|
|
from django.db import transaction
|
|
from django.utils import timezone
|
|
|
|
from apps.ai.models import AITask
|
|
from apps.ai.services import create_ai_task, execute_routed_text_request
|
|
from apps.billing.pricing import quote_video_digest
|
|
from apps.billing.services.ledger import charge_reserved_credit, reserve_credit
|
|
|
|
video, frames, duration, extras = digest_input_from_upload(
|
|
upload, keep_source=(project is None)
|
|
)
|
|
extras = extras or {}
|
|
source_path = str(extras.get("source_path") or "")
|
|
file_name = str(extras.get("file_name") or getattr(upload, "name", "") or "参考视频.mp4")
|
|
width = int(extras.get("width") or 0)
|
|
height = int(extras.get("height") or 0)
|
|
file_size = int(extras.get("file_size") or getattr(upload, "size", 0) or 0)
|
|
|
|
model_config = (
|
|
existing_task.model_config
|
|
if existing_task is not None and existing_task.model_config_id
|
|
else resolve_digest_model_config(preferred_id=model_config_id)
|
|
)
|
|
if model_config is None:
|
|
if source_path:
|
|
Path(source_path).unlink(missing_ok=True)
|
|
raise VideoDigestError("视频提炼需要 Gemini 3.1 Pro(会看图),当前没有启用,请联系管理员")
|
|
logger.info(
|
|
"video digest using %s:%s (%s) input=%s duration=%.1fs bytes=%s frames=%s",
|
|
model_config.provider.name,
|
|
model_config.name,
|
|
model_config.display_name,
|
|
"native_video" if video is not None else "frames",
|
|
duration,
|
|
len(video.data) if video is not None else 0,
|
|
len(frames),
|
|
)
|
|
|
|
messages = build_digest_messages(
|
|
frames,
|
|
duration,
|
|
product_hint=product_hint,
|
|
video=video,
|
|
aspect_ratio=ratio_label(width, height),
|
|
file_title=title_from_filename(file_name),
|
|
)
|
|
request_payload = {
|
|
"model": model_config.name,
|
|
"endpoint": model_config.endpoint,
|
|
"feature": "video_remix" if project is None else "video_digest",
|
|
"duration_seconds": round(duration, 2),
|
|
"input": "native_video" if video is not None else "frames",
|
|
"frame_count": len(frames),
|
|
"video_bytes": len(video.data) if video is not None else 0,
|
|
"frame_times": [f.at_seconds for f in frames],
|
|
"file_name": file_name,
|
|
"title": title_from_filename(file_name),
|
|
"file_size": file_size,
|
|
"width": width,
|
|
"height": height,
|
|
"ratio": ratio_label(width, height),
|
|
}
|
|
|
|
quote = quote_video_digest(team=team, model_config=model_config)
|
|
if quote.meta.get("rate"):
|
|
request_payload = {**request_payload, "points_per_yuan_snapshot": quote.meta["rate"]}
|
|
|
|
if existing_task is not None:
|
|
task = existing_task
|
|
existing_req = dict(task.request_payload or {})
|
|
request_payload = {**existing_req, **request_payload}
|
|
task.request_payload = request_payload
|
|
task.save(update_fields=["request_payload", "updated_at"])
|
|
elif project is not None:
|
|
task = create_ai_task(
|
|
project=project,
|
|
user=user,
|
|
task_type=AITask.Type.VIDEO_DIGEST,
|
|
model_config=model_config,
|
|
# 帧是几百 KB base64,绝不进 request_payload(会把 AITask 表撑爆),只记形状
|
|
request_payload=request_payload,
|
|
quote=quote,
|
|
)
|
|
else:
|
|
try:
|
|
with transaction.atomic():
|
|
task = AITask.objects.create(
|
|
team=team,
|
|
created_by=user,
|
|
project=None,
|
|
task_type=AITask.Type.VIDEO_DIGEST,
|
|
status=AITask.Status.CREATED,
|
|
model_config=model_config,
|
|
idempotency_key=f"video_digest:{team.id}:{uuid.uuid4()}",
|
|
request_payload=request_payload,
|
|
estimated_cost=quote.points,
|
|
base_cost=quote.base_cost_yuan,
|
|
)
|
|
reserve_credit(team=team, user=user, task=task, amount=quote.points)
|
|
task.status = AITask.Status.RESERVED
|
|
task.save(update_fields=["status", "updated_at"])
|
|
except ValueError as exc:
|
|
if source_path:
|
|
Path(source_path).unlink(missing_ok=True)
|
|
if "insufficient credit" in str(exc).lower():
|
|
raise VideoDigestError("团队余额不足，请充值后重试") from exc
|
|
raise VideoDigestError(str(exc)) from exc
|
|
reservation = task.credit_reservation
|
|
try:
|
|
task.status = AITask.Status.SUBMITTED
|
|
task.submitted_at = timezone.now()
|
|
task.save(update_fields=["status", "submitted_at", "updated_at"])
|
|
routed = execute_routed_text_request(
|
|
task=task,
|
|
primary_model=model_config,
|
|
messages=messages,
|
|
streaming=True,
|
|
structured_output=False,
|
|
business_operation="video_digest",
|
|
temperature=0.4,
|
|
validate_text=lambda text: validate_digest_text(
|
|
text, duration=duration, frame_count=len(frames) or (24 if video else 0)
|
|
),
|
|
extra_body={"max_tokens": DIGEST_MAX_TOKENS},
|
|
request_summary={
|
|
"duration_seconds": round(duration, 2),
|
|
"frame_count": len(frames),
|
|
"input": "native_video" if video is not None else "frames",
|
|
},
|
|
allow_retry=False,
|
|
allow_fallback=False,
|
|
)
|
|
_text, _response, digest = routed.value
|
|
except Exception as exc: # noqa: BLE001
|
|
if source_path:
|
|
Path(source_path).unlink(missing_ok=True)
|
|
_fail_digest_task(task, reservation, str(exc))
|
|
raise
|
|
|
|
existing_req = dict(task.request_payload or {})
|
|
cover_key = str(existing_req.get("cover_key") or "")
|
|
cover_url = str(existing_req.get("cover_url") or "")
|
|
video_key = str(existing_req.get("video_key") or "")
|
|
video_url = str(existing_req.get("video_url") or "")
|
|
if project is None:
|
|
if not cover_key:
|
|
try:
|
|
cover_key, cover_url = _store_digest_cover(team=team, jpeg=extras.get("cover_jpeg") or b"")
|
|
except Exception: # noqa: BLE001 — 封面失败不挡拆解结果
|
|
logger.warning("video digest cover upload failed", exc_info=True)
|
|
try:
|
|
stored_key, stored_url = _store_digest_video(
|
|
team=team,
|
|
path=source_path,
|
|
suffix=str(extras.get("suffix") or ".mp4"),
|
|
)
|
|
if stored_key:
|
|
video_key, video_url = stored_key, stored_url
|
|
except Exception: # noqa: BLE001 — 原片失败仍可看提示词,封面不能播
|
|
logger.warning("video digest source upload failed", exc_info=True)
|
|
if source_path:
|
|
Path(source_path).unlink(missing_ok=True)
|
|
source_path = ""
|
|
|
|
shots = shot_count(digest)
|
|
request_payload = {
|
|
**existing_req,
|
|
**request_payload,
|
|
"shot_count": shots,
|
|
"cover_key": cover_key or existing_req.get("cover_key") or "",
|
|
"cover_url": cover_url or existing_req.get("cover_url") or "",
|
|
"video_key": video_key or existing_req.get("video_key") or "",
|
|
"video_url": video_url or existing_req.get("video_url") or "",
|
|
}
|
|
|
|
with transaction.atomic():
|
|
task.status = AITask.Status.SUCCEEDED
|
|
task.request_payload = request_payload
|
|
task.response_payload = {"digest": digest[:32000], "prompt": digest[:32000]}
|
|
task.actual_cost = task.estimated_cost
|
|
task.completed_at = timezone.now()
|
|
task.save(
|
|
update_fields=[
|
|
"status",
|
|
"request_payload",
|
|
"response_payload",
|
|
"actual_cost",
|
|
"completed_at",
|
|
"updated_at",
|
|
]
|
|
)
|
|
charge_reserved_credit(reservation=reservation, actual_amount=task.actual_cost)
|
|
|
|
return {
|
|
"text": digest,
|
|
"chars": len(digest),
|
|
"frames": len(frames),
|
|
"input": "native_video" if video is not None else "frames",
|
|
"duration": round(duration, 1),
|
|
"task_id": str(task.id),
|
|
"estimated_cost": str(task.estimated_cost),
|
|
"title": request_payload.get("title") or title_from_filename(file_name),
|
|
"file_name": file_name,
|
|
"ratio": request_payload.get("ratio") or "",
|
|
"shots": shots,
|
|
"cover_url": cover_url,
|
|
"video_url": video_url,
|
|
"width": width,
|
|
"height": height,
|
|
}
|
|
|
|
|
|
def _fail_digest_task(task, reservation, message: str) -> None:
|
|
from django.utils import timezone
|
|
|
|
from apps.ai.models import AITask
|
|
from apps.billing.services.ledger import release_credit
|
|
|
|
try:
|
|
task.status = AITask.Status.FAILED
|
|
task.error_message = message[:2000]
|
|
task.completed_at = timezone.now()
|
|
task.save(update_fields=["status", "error_message", "completed_at", "updated_at"])
|
|
finally:
|
|
try:
|
|
release_credit(reservation=reservation, reason=message[:200])
|
|
except Exception: # noqa: BLE001
|
|
pass
|