Failed ffmpeg conversion

[Alexis Fotiadis]

Hi all,
Does anybody know how to convert .partial.mp4 files to complete video files after 
an ffmpeg failure? I have some videos that downloaded completely, but ffmpeg 
hung/crashed during conversion. I know that if the video is still available on the BBC 
iPlayer, then the file can still be converted using 'get_iplayer --force --pid=xxxxxxxx' in 
the get_iplayer command line version, but is there a similar way of converting once the 
video has expired (as that way doesn't work)? My VLC still plays the partial files, but 
hangs if I fast forward/rewind.
Cheers.