Repairing audio on AVI file

[jwkelley]

I took an video with my camera of a class. For the first 40 seconds the video is ok but after that the audio kicks out. When the audio kicks the video seems to slow motion a little bit then going back to normal but without the audio. The audio wont play in the Camera, or on any video players VLC, windows media player ect.

I was wondering if there is any way to salvage the video, I need it for a job interview and am not sure if I have time to shoot another one?

[killerteengohan]

Sharing a copy of the video your asking about to look at and examine would help greatly in giving you an accurate answer or idea's.

[jagabo]

Try opening the audio in Audacity (with the ffmpeg source plugin). If you get it all you can save it and remux with the video from the original file with VirtualDub or some other muxer.

[jwkelley]

https://drive.google.com/file/d/0B7a-N5Sv00FmWDk4LUx6WFNLQjg/view?usp=sharing

Here is a copy of the video.

Thanks I will try that with audacity.

[jagabo]

If you look at the AVI file with a AVI RIFF chuck viewer (VirtualDub has one with it's hex editor) you can see that there are no more audio chunks after ~42 seconds. Ie, there is only 42 seconds of audio in the file.



At the top 1/3 of the image you can see audio chunks (stream 1) interspersed with video chunks (stream 0). But after that there are only video chunks. It continues with only video chunks through the rest of the file.

[jwkelley]

Nice, thanks for the help, i will try and reshoot it.