True-HD to ac3 extraction

[bldblu]

I have an MKV file that has a single audio stream, Dolby TrueHD. This does not play any audio when I play the file through my WD TV Live, so I am looking for some software to extract the audio stream so that I can convert it to AC3 and add it back in.

I have tried mkvtoolnix and eac3to, but neither are able to extract the stream.

this was posted 10 months ago but never answered,so i wanted to try again

the video is excellent bitrate,but audio wont play unless it is dts-ma or ac3 6 ch media player will not play true hd format

[transporterfan]

Is this any good to you?

https://www.videohelp.com/tools/Clown-BD#features

And here a member from 2 years ago!

https://forum.videohelp.com/threads/310916-Demuxing-True-HD-sound-to-convert-to-ac3?p=1...=1#post1952201

What error do you get with eac3to?

[ranosb]

Demux with Tsmuxer, it will extract the lossless stream.
Then you can convert to AC3 from there or DTS-MA with DTS HD Encoder Suite, which will save the lossless for later use and the WD TV will play the included core which is DTS.

[nateo200]

Demux with Tsmuxer, it will extract the lossless stream.
Then you can convert to AC3 from there or DTS-MA with DTS HD Encoder Suite, which will save the lossless for later use and the WD TV will play the included core which is DTS.

This^^^. I can convert TrueHD to AC3 in Handbrake though....I also have DTS HD Encoder but I always thought it would only accept mono/stereo PCM tracks for each channel input..... Is there a guide to this? Just curious.. Also I would love to use DTS HD encoder for converting 8 channel AAC's if thats possible.

[ravishank]

You could try mkv cleaver to demux the video...

[wulf109]

TFM Audio Tool

[thinredline]

I'm trying to do the same thing: extract Dolby TrueHD from mkv.

mkvextract or tsmuxer doesn't work.
does anyone know anything that works?


I don't want to convert the audio.
just want to extract it, so that i will remux it to another mkv.

also used ClownBD which says it can extract Dolby trueHD, but it encounters an error..

[Lathe]

Demux with Tsmuxer, it will extract the lossless stream.
Then you can convert to AC3 from there or DTS-MA with DTS HD Encoder Suite, which will save the lossless for later use and the WD TV will play the included core which is DTS.

People KEEP saying to use TSMuxeR either to process or demux the stream.

BUT... as another person later on on this page posted and as I have now found out TSMUXER DOES NOT ACCEPT TRUEHD!!!

WHY do people keep saying to use it when it clearly does NOT recognize it?

Am I missing something here? (I'm using version 10.1.6)

This is a REAL frustrating mystery to me...

Thanks!

[Selur]

@Lathe: see -> https://forum.videohelp.com/threads/342599-What-happended-to-Dolby-TrueHD?p=2250406&vie...=1#post2250406

[thegeeman]

As the others have failed, a bit of an 'oddball' suggestion here, but why don't you try and load it into avidemux, click on audio and then select 'save as' (remembering to put the file extension in to the outputted file).

This has worked for me with MKV files with DTS and AC3. Never tried it with truehd though.

Popcorn may help with conversion ( I say, 'may help')

[Selur]

assuming the source mkv is not broken one or the other way:
a. mkvextract and ffmpeg can both extract the audio stream to .thd (remember this is only the thd stream, it does not include the ac3 core anymore, like it did on the blu-ray; mkv doesn't support combo streams)
b. ffmpeg can decode and reencode the audio stream
c. like I mentioned in the thread I liked above: tsMuxeR does only support 'ac3 + true-hd'-combo streams and not true-hd-only streams -> tsMuxeR therefore can't extract (or multipled) a true-hd stream from a transport stream or a mkv file.