Repair audio in an MKV

[loninappleton]

Thanks for the recent help given in getting Handbrake to make a smaller MKV than 6 gb.

After twiddling a bit I have the file greatly reduced to 1.2 gb for 2hrs and 9 minutes. But no sound.

If a demux job is required please give details.

If my Handbrake size reduction is the problem advise on that. But this is specifically a sound problem.
It's like there's nothing there at all and including the original large MKV.

I will get another sample and see if it's my new OS setup that is to pblame as well.

[loninappleton]

Found it.

The speaker icon / mixer in Win 7 must start in a turned off X-ed out state. I toggled it and sound comes on.

Thanks to this thread for putting me on the right path:

http://www.pcgamer.com/2011/11/10/the-most-frustrating-windows-7-audio-problem-solved/