Game crashed during record. Recover?

[gray]

So I was recording Sanatorium(new Slender game), and suddenly game crashed, and I didn't end the record. And now I have a 3 GB file, which is not opening by any program, and Action itself thinks that its length is 1 second. Is there any way to recover data?

[radi]

Sadly no. The file is unusable if Action couldn't close it properly because of the recording process crash.

[gray]

Sadly no. The file is unusable if Action couldn't close it properly because of the recording process crash.

aaaand there's no way I can like open some of the correctly closed files in hex-editor and just rip the ending or something like that? :C
Oh, and I also have another problem, but it's not Action's problem, FRAPS and other programms have this effect too. Sounds from game just doesn't record. System sounds are recording perfectly, but sounds from game - no.