i create video mp4 with android's screen-recorder, it's about 4G
i connect it to debian with jmtpfs and copy it to ext4 hard disk with more than 10G of free space
it fails: cp: error reading 'DCIM/ScreenRecorder/Screenrecorder-2022-01-30-12-29-58-111.mp4': Invalid argument
i run "ls -l", about 2G has been copied i've play this mp4 using android, didn't meet reading errorBTW which package in bullseye can play mp4? mplayer has failed, and some player require gnome , but i haven't installed gnome