[severian1967]

A friend of mine created an MKV file of a movie, and it includes two audio tracks, a TrueHD track for the film itself, and an AC3 2.0 audio commentary. When the film is played in every player I've tried, 7MC, MPC-HC, WMP, the commentary track is selected as the default. I can't seem to find any way to switch audio tracks from inside any player.


This isn't the first time I've come across this quirk, so I did what I've done before: remux the MKV with only the two streams I want. However, apparently MKVextract simply can't extract Dolby TrueHD streams, as it gives an error to that effect. I can easily extract the elemental video and AC3 streams, but not the audio stream I actually need.


I've tried a couple other programs to accomplish this, but to no avail. I'd really appreciate anyone's help. How can I change audio streams inside a player, or barring that, how can I extract the TrueHD stream from the MKV for remuxing?


Thanks.

 

[nihilist1977]

use mkvmerge and set the truehd track to the default track,


once that is chosen you will need to remux the file.

 

[severian1967]

Doh! that was easy. I simply deselected all files except the necessary ones, and MKVMerge created a new file, already muxed. I really didn't know you could load an MKV into MKVMerge as a source file, thanks for the help nihilist!

 

[nihilist1977]

you're welcome, glad that helped you .

 

[severian1967]

No joy. Although I did get the file remuxed with the proper tracks, I get no audio. I assumed I would be able to read the core Dolby track from TrueHD, like I can with DTS-MA, but no dice. I can play back files with AC3 audio just fine, but not TrueHD.


I wasn't planning on bitstreaming TrueHD just yet, but if anyone has any suggestions on how to get even 5.1 core audio from TrueHD, I'm all ears.


thanks

 

[JerryW]

If you are using MPC-HC you can install ffdshow which will get you the ffdshow audio decoder which will handle truehd natively.


Also beta versions of MPC-HC may be able to decode truehd too.

Betas are available at http://www.xvidvideo.ru/media-player...inema-x86-x64/


Or, you can convert the truehd to flac before muxing the mkv. That works great on PCs, but most standalone players suck at multichannel flac (they advertise flac support, but only implement stereo which is dumb, nobody makes mkv's with flac and only does stereo, it would defeat the purpose).

 

[almostinsane]

I dont think TrueHD contains a core track like DTS-MA does.

 

[Favelle]



Quote:
Originally Posted by almostinsane /forum/post/18216549


I dont think TrueHD contains a core track like DTS-MA does.

CORRECT. Dolby TrueHD has no core track. There is nothing wrong with your player, there's just no core track like there is with DTS-MA.

 

[severian1967]

Thanks for the replies, I really do appreciate everyone's help.


JerryW, I'm using 7MC. In my FFDShow audio settings, I have enabled Dolby TrueHD, which seems to require disabling AC3 support, but still no sound. No luck in MPC-HC, but I'll try a beta. I'd really prefer to keep this in MediaBrowser if at all possible. I dislike converting to FLAC because I also get the low volume levels that plague most folks.

 

[nihilist1977]

are you trying to pass truedhd through to a receiver, or are you expecting your pc to handle the decode of the truehd stream ?

 

[tycoonheart]

If you are using 7MC, install Media Control. It works along with FFDShow. It allows you to easily switch tracks within containers.

 

[severian1967]

nihilist, I can try both. My main HTPC is connected to my Onkyo SR607 AVR. However, I test things out on my main machine first, which is only equipped with analog speakers. Neither has any audio from the file at this point.


tycoonheart, I've heard MediaControl breaks DXVA, so I haven't installed it. If that's not true I'd certainly give it a try, I've heard good things about it otherwise.

 

[nihilist1977]

which mkv splitter and version are you using for the one going to your onkyo, are you passing the truehd stream through via ffdshow settings ?


if you are using haali, only the latest version of that recognizes truehd streams.

 

[severian1967]

I'll go find the latest version of Haali then. Thanks!

 

[tycoonheart]



Quote:
Originally Posted by severian1967 /forum/post/18220702


tycoonheart, I've heard MediaControl breaks DXVA, so I haven't installed it. If that's not true I'd certainly give it a try, I've heard good things about it otherwise.

It doesn't if you use ffdshow's DXVA filter.

 

[severian1967]



Quote:
Originally Posted by tycoonheart /forum/post/18222050


It doesn't if you use ffdshow's DXVA filter.

thanks, I'll give that a try too.


I DID end up getting audio out with the latest version of Haali, so thanks Nihilist!