Preserving 8-channel audio

[Spica66]

I am trying to find a product that will convert .mkv to .m2ts and PRESERVE the 8-channel audio. Plenty of products will convert the video, but not give 8-channel audio.

[JVRaines]

If you are not command line-averse, FFmpeg will do this easily using -codec copy.

[Spica66]

I used this command on the file I have attached: C:\>ffmpeg -i Dolby_Spheres_v1_Lossless-thedigitaltheater.mkv -codec copy shperes.m2ts

While the conversion was happening, I received tens of thousands of the error "Non-monotonous DTS in output stream 0:1;...". I have attached a screen shot of those.

What have I done wrong?

[pandy]

What have I done wrong?

Nothing - this is pretty common warning provided by ffmpeg when some non ffmpeg created files are processed - if result works for you then you can ignore those warning messages .

[JVRaines]

And if you don't want to see the warnings, add -v error to the command line.