Recovering the temp_video file
i know it is odd to response to a "long time ago" post, but i wish that this may help people who are facing similar problem.
I have just tried the app from the Google Play, MP4fix.
It requires the corrupted file, temp_video and a well-recorded file, i am not sure is it better to be a similar length for the well-recorded?
After processing, you can freely play the recovered file or paid to save the file.
Which means you can use another phone to Rexxxx while the phone is pXXXing the video.
However, it is better to pay for the developers who make this app.