I’ve been trying to convert home videos in mv4 format to either mp4 or flv format. Owncloud Video Streamer app does not appear to support m4v format. I was attempting to use:
ffmpeg -i myfilename.mv4 myfilename.mp4
ffmpeg -i myfilename.mv4 myfilename.flv
ffmpeg crashes in either case.
Here’s a workaround:
ffmpeg -i myfilename.mv4 myfilename.ts
ffmpeg -i myfilename.ts -ar 44100 myfilename.flv
Conversion from *.ts to *.mp4 also worked, but the resulting file had audio only on Owncloud Video Streamer even though it worked fine with vlc.