INNER CODE UNIT · Python

extract_frames

unitedrhino/things · scripts/generate-energy-demo-svg.py:51

def extract_frames(demo: Demo, target: Path) -> list[Path]:
    """extract_frames 按固定帧率和宽度提取 JPEG，避免 README 资源体积失控。"""

    command = [
        "ffmpeg",
        "-v",
        "error",
        "-threads",
        "2",
        "-i",
        str(demo.source),
        "-t",
        str(demo.duration),
        "-vf",
        f"fps={FRAME_RATE},scale={FRAME_WIDTH}:-2:flags=lanczos",
        "-q:v",
        str(JPEG_QUALITY),
        str(target / "frame-%04d.jpg"),

View source record →