I have a mp4 Video, from that I extract the audio. I use mencoder, mplayer and ffmpeg directly.
ffmpeg -i Videos/Spiele/ZBOF4.mp4 -vn -acodec libmp3lame -ab 144k /home/alex/Musik/Spielemusik/bof.mp3 The result is always the same. After copying to Media-player
lsusb | grep -i sony
Bus 008 Device 006: ID 054c:085c Sony Corp The file looses the suffix mp3 and after playing 2 or 3 times it is not longer playable. The format is not supported.
lsblk -f | grep sdc
└─sdc1 vfat WALKMAN 50E2-2700 /media/alex/WALKMAN
First I thought the player stuff is broken. But new Videos and mp3's are propper working. So I make a filesystemcheck too.
fsck.fat 3.0.27 (2014-11-12)
/dev/sdc1: 309 files, 79720/220095 clusters Nothing too complain.
I can't find out where the Problem is. Maybe the Video itself relevant information I hope Jessie is the OS.