My constant quality test file is playing without error on the 83.

That being the case, I will try experimenting more with adding back the audio tracks I desire and adjusting the quality rate.

How is it that I can get away with compressing the 16GB file down to 8GB and not notice any reduction in quality? All those audio tracks shouldn't take up that much space, but I'm no expert.

So far no luck in finding the AVCHD version, by the way.

Chewtobacca said:

jdryyz said: I still think that might be too much compression. :)

It's not. The original file-size is excessive.

Track down the AVCHD version, which is barely distinguishable from the MKV in terms of quality, and see if it plays. That might save you some bother.