marijo/movmaker
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Show audio and output estimates

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hbrain 2026-05-25 10:23:18 +00:00
parent c42e44231a
commit ecaa6cc959
1 changed files with 12 additions and 0 deletions
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movmaker.py
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@ -477,6 +477,14 @@ def console(message: str) -> None:
print(f"[{timestamp()}] {ascii_safe(message)}")
def estimate_output_size(duration: float, width: int, height: int, fps: int, crf: int) -> int:
pixels = width * height
quality_factor = max(0.45, (28 - crf) / 8)
bitrate_mbps = max(2.0, pixels * fps * quality_factor / 7_000_000)
audio_mbps = 0.192
return int(duration * (bitrate_mbps + audio_mbps) * 1_000_000 / 8)
def default_output_path(first_media: Path, data: MovieData, out_dir: Path) -> Path:
date = media_date(first_media).strftime("%Y%m%d")
title = slugify(data.title or first_media.parent.name or "movie")
@ -968,9 +976,13 @@ def main(argv: list[str] | None = None) -> int:
# Use probed normalized duration for accuracy.
durations = [ffprobe_duration(out) for out in clips]
estimated_duration = durations[0] if len(durations) == 1 else durations[0] + sum(durations[1:]) - fade * (len(durations) - 1)
estimated_size = estimate_output_size(estimated_duration, width, height, fps, crf)
captions = [data.captions.get(item.path.name, data.captions.get(str(item.path), "")) for item in media]
audio = concat_or_mix_audio(audio_files, tmp / "music.m4a")
console(f"Audio: {audio if audio else 'none'}")
console(f"Estimated output: video length {estimated_duration:.1f}s, size about {format_bytes(estimated_size)}")
build_video(clips, durations, audio, output, data, first_media_date, captions, fade, audio_fade, audio_fade_in, video_fade, width, height, fps, preset, crf, tmp)
console(f"Done: {output}")