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Avi

format/riff/avi.md

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Samples

AVI has many redundant ways to index samples so currently .streams[].samples will only include samples the most "modern" way used in the file. That is in order of stream super index, movi ix index then idx1 index.

Extract samples for stream 1

sh
$ fq '.streams[1].samples[] | tobytes' file.avi > stream01.mp3

Show stream summary

sh
$ fq -o decode_samples=false '[.chunks[0] | grep_by(.id=="LIST" and .type=="strl") | grep_by(.id=="strh") as {$type} | grep_by(.id=="strf") as {$format_tag, $compression} | {$type,$format_tag,$compression}]' *.avi

Speed up decoding by disabling sample and extended chunks decoding

If your not interested in sample details or extended chunks you can speed up decoding by using:

sh
$ fq -o decode_samples=false -o decode_extended_chunks=false d file.avi

References