[FFmpeg-user] Copying a matroska container including the attachement

[Mathieu Malaterre]

Hi there,

What would(should?) be the right command to copy an mkv file
(including the attachment). I tried a naive:

ffmpeg -i input.mkv -map 0 -map_metadata 0 -c copy output.mkv

The attachment information gets lost (the jpg seems to be still there though).

Thanks,
-- 
Mathieu