hi, Problem solved! I was able to get the image to be added to the MKV file without it being created as a video stream. See command below: ffmpeg -i "input.mkv" -attach "cover.jpg" -map 0 -c copy -metadata:s:t mimetype="image/jpg" -metadata:s:t:0 filename="cover.jpg" "output_cover.mkv" thanks Clamarc