Geoffrey Frogeye
1f61ceb395
They're a bit slower to start :(. Hopefully this is something that flakes will help with, otherwise I'll find another way.
66 lines
1.3 KiB
Plaintext
Executable file
66 lines
1.3 KiB
Plaintext
Executable file
#!/usr/bin/env nix-shell
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#! nix-shell -i python3 --pure
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#! nix-shell -p python3 ffmpeg
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# Compress a video to make it fit under a certain size.
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# Usage: videoQuota SIZE SRC DST
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# SIZE: destination video size in bytes
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# SRC: source video file
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# DST: destination video file
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# Example: videoQuota 20971520 source.mov dest.mp4
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# To make a ~20 MiB MP4 of a MOV video
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import subprocess
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import sys
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def duration_file(path: str) -> float:
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cmd = [
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"ffprobe",
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"-v",
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"error",
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"-show_entries",
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"format=duration",
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"-of",
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"default=noprint_wrappers=1:nokey=1",
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path,
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]
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run = subprocess.run(cmd, stdout=subprocess.PIPE, check=True)
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ret = run.stdout.decode().strip()
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return float(ret)
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# Constants
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audio_br_bi = 128000
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# TODO Arguments if you feel like it
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quota_by = int(sys.argv[1])
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in_file = sys.argv[2]
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out_file = sys.argv[3]
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filters = sys.argv[4:]
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quota_bi = quota_by * 8
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duration = duration_file(in_file)
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tot_br_bi = quota_bi / duration
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video_br_bi = int(tot_br_bi - audio_br_bi)
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assert video_br_bi > 0, "Not even enough space for audio"
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cmd = (
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[
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"ffmpeg",
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"-i",
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in_file,
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]
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+ filters
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+ [
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"-b:v",
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str(video_br_bi),
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"-b:a",
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str(audio_br_bi),
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out_file,
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]
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)
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print(" ".join(cmd))
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subprocess.run(cmd, check=True)
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