I tried mp4art, after adding the cover, the information from FFmpeg is like this: stream 0, timescale not set See also the documentation on the image2 muxer for more options.Mp4art from mp4v2 can also do this: mp4art -add cover.jpg track.m4a The packages that come with Ubuntu are always outdated, and – depending on your Ubuntu version – not even the 'real' FFmpeg, but the Libav fork (which is fine to use, but one should know the difference).ĭon't forget that the images need to have sequential names when you use the %07d.jpg syntax for ffmpeg, without missing numbers. Note that you'll lose quality in that process, so it's not ideal and I'd go with PNGs as intermediates as they're lossless.īy the way: It's always a good idea to use the latest version of FFmpeg, which you can download as a static build (just download, extract, use), or compile yourself. This would re-save the JPEG files under the same name. You can do that kind of batch conversion with ImageMagick, for example: for f in *.JPG do mogrify '$f' done To fix this you need to re-save the images, either as PNGs as you tried before, or as JPEGs. In that case, even though your images might be showing fine in other viewers, it's something FFmpeg can't (or won't) handle.

Overread 8 is an error that is thrown when ffmpeg tries to read a JPEG image (or a frame from an MJPEG stream) block-by-block, but there are still leftover bits.

Ffmpeg copy artwork