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A whole-file mp4 index grows with the frame count; for a many-hour video it reaches tens of MB, which a phone must fetch and parse before the first frame, and every seek walks it. `fragmented` writes the file with -movflags +frag_keyframe+empty_moov+default_base_moof+global_sidx and 10s fragments: a ~1 KB moov plus a global seek index, so playback starts and seeks quickly. mp4/m4a only; a remux, so it takes seconds per GB. Measured on an 11-hour h264/aac file: moov 40 MB -> 1.4 KB, seek index 2 x 120 KB, 10k fragments, duration and codecs unchanged, remux in 25s. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> |
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| flasher | ||
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| zim | ||
| __init__.py | ||