2025-03-14 21:59:59 -06:00
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# mp4box
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> MPEG-4 Systems Toolbox: muxe streams into MP4 container.
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2026-02-18 06:55:01 -07:00
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> More information: <https://github.com/gpac/gpac/wiki/Fragmentation,-segmentation,-splitting-and-interleaving>.
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2025-03-14 21:59:59 -06:00
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- Display information about an existing MP4 file:
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`mp4box -info {{path/to/file}}`
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- Add an SRT subtitle file into an MP4 file:
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`mp4box -add {{input_subs.srt}}:lang=eng -add {{input.mp4}} {{output.mp4}}`
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- Combine audio from one file and video from another:
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`mp4box -add {{input1.mp4}}#audio -add {{input2.mp4}}#video {{output.mp4}}`
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