FFmpeg - MP4 Faststart: Difference between revisions
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Created page with "Normally, a MOV/MP4 file has all the metadata about all packets stored in one location. This data is usually written at the end of the file, but it can be moved to the start for better playback by adding <code>+faststart</code> to the <code>-movflags</code>…<br/> <pre> ffmpeg -i <input.file> -c copy -f mp4 -movflags +faststart <output.file> </pre> Reference: https://ffmpeg.org/ffmpeg-formats.html#Fragmentation FFmpeg: FFmpeg Formats Documentation" |
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ffmpeg -i <input.file> -c copy -f mp4 -movflags +faststart <output.file> | ffmpeg -i <input.file> -c copy -f mp4 -movflags +faststart <output.file> | ||
</pre> | </pre> | ||
Reference: [[https://ffmpeg.org/ffmpeg-formats.html#Fragmentation FFmpeg: FFmpeg Formats Documentation]] | Depending on the size of your input it can take a few more seconds usually to perform the second pass to move the <code>moov</code> atom to the beginning of the file.<br/> | ||
This will… allow the video to begin playing before it is completely downloaded by the viewer.<br/> | |||
Reference: [[https://ffmpeg.org/ffmpeg-formats.html#Fragmentation FFmpeg: FFmpeg Formats Documentation]]<br/> | |||
Reference: [[https://superuser.com/questions/856025/any-downsides-to-always-using-the-movflags-faststart-parameter superuser: Any downsides to always using the -movflags faststart parameter?]] | |||
Reference: [[https://trac.ffmpeg.org/wiki/Encode/H.264 FFmpeg: H.264 Video Encoding Guide]] | |||
Revision as of 13:26, 6 March 2025
Normally, a MOV/MP4 file has all the metadata about all packets stored in one location. This data is usually written at the end of the file, but it can be moved to the start for better playback by adding +faststart to the -movflags…
ffmpeg -i <input.file> -c copy -f mp4 -movflags +faststart <output.file>
Depending on the size of your input it can take a few more seconds usually to perform the second pass to move the moov atom to the beginning of the file.
This will… allow the video to begin playing before it is completely downloaded by the viewer.
Reference: [FFmpeg: FFmpeg Formats Documentation]
Reference: [superuser: Any downsides to always using the -movflags faststart parameter?]
Reference: [FFmpeg: H.264 Video Encoding Guide]
