The framehash muxer can be used to compare the unique hash of each frame to ensure that the result is truly lossless: $ ffmpeg -i input%03d.jpg -f framehash. You can use jpegtran to perform lossless optimization on each frame which may provide significant file size savings: mkdir outputdirįor f in *.jpg do jpegtran -optimize -copy none -perfect -v "$f" > "outputdir/$f" done
Note that if you omit -framerate then a default of -framerate 25 will be applied to the input. You can simply mux the JPG images to make a video: ffmpeg -framerate 30 -i input%03d.jpg -codec copy output.mkv
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