50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
"""将幻灯片与配音逐段合成为 MP4，再拼接为完整视频。"""
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import subprocess
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import sys
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from pathlib import Path
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import imageio_ffmpeg
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FFMPEG = imageio_ffmpeg.get_ffmpeg_exe()
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WS = Path(__file__).resolve().parent
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REPO_ROOT = WS.parent
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PARTS = WS / "parts"
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PARTS.mkdir(exist_ok=True)
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N = 12
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part_files = []
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for i in range(1, N + 1):
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slide = WS / "slides" / f"slide{i:02d}.png"
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audio = WS / "audio" / f"seg{i:02d}.mp3"
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part = PARTS / f"part{i:02d}.mp4"
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cmd = [
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FFMPEG, "-y",
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"-loop", "1", "-framerate", "30", "-i", str(slide),
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"-i", str(audio),
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"-c:v", "libx264", "-preset", "medium", "-tune", "stillimage",
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"-c:a", "aac", "-b:a", "192k",
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"-pix_fmt", "yuv420p",
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"-shortest", "-movflags", "+faststart",
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str(part),
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]
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r = subprocess.run(cmd, capture_output=True, text=True, timeout=600)
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if r.returncode != 0 or not part.exists():
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print(f"part{i:02d} 合成失败:\n{r.stderr[-800:]}")
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sys.exit(1)
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part_files.append(part)
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print(f"part{i:02d}.mp4 ✓ ({part.stat().st_size // 1024} KB)")
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lst = WS / "concat.txt"
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lst.write_text("".join(f"file 'parts/{p.name}'\n" for p in part_files), encoding="utf-8")
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final = REPO_ROOT / "APS智能体演示视频.mp4"
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r = subprocess.run(
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[FFMPEG, "-y", "-f", "concat", "-safe", "0", "-i", str(lst),
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"-c", "copy", "-movflags", "+faststart", str(final)],
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capture_output=True, text=True, timeout=600,
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)
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if r.returncode != 0 or not final.exists():
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print("拼接失败:\n", r.stderr[-800:])
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sys.exit(1)
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print(f"\n最终视频: {final} ({final.stat().st_size / 1024 / 1024:.1f} MB)")
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