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I'm trying to convert HEIC to JPG using GPAC/MP4Box. I have been able to get small JPG "tiles" for a single HEIC file but I can't figure out how to get one large JPG.

Commands are like:

% MP4Box -dump-item 1:path=tile1.hevc iphonesample.heic
% ffmpeg -i tile1.hevc -frames:v 1 -q:v 1 -an tile1.jpg
Gyan
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OneSolitaryNoob
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  • you would have to stitch all tiles together. maybe check out https://github.com/monostream/tifig its a util doing exactly that – Flask Nov 09 '17 at 10:49

1 Answers1

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Once you have all HEVC files extracted, create a text file

file file1.hevc

file file2.hevc

file file3.hevc

...

file file48.hevc

then run,

ffmpeg -f concat -i list.txt -vf tile=8x6 -vframes 1 -q:v 1 grid.jpg

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Ketan Chauhan
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