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Blackwalker
21st January 2009, 09:52
hi all

someone suggest me this to extract the "TRUE-HD" audio track:
eac3to X:\ where X is the letter of your blu-ray/hddvd drive

eac3to will provide you with a list of playlists from the disc.
Find under which section the truehd audio track you are looking for is ( 1), 2), etc.) and
then add that to the command line you typed before. So it should look like:

eac3to X:\ #) where # is the number of the playlist

Once that command is entered it will show you something like this:

1: chapters
2: video track
3: video/audio track
etc.

Find which number corresponds to the audio track you're looking for. The command line will look like this now:

eac3to X:\ #) *: "audioTrack.thd" where *= track number; audiotrack = the directory where you're saving the
truehd audio file and .thd is the file type.

Once you have both the video and audio track, load the video track into tsmuxer,
hit append and load the audio track. Make sure both tracks are selected in the check box area
and then you can save the file with both video and audio.

All of what I've written here is demonstrated visually near the end of the "How-To-Use" page
of the eac3to wikibook located here:
http://en.wikibooks.org/wiki/Eac3to/How_to_Use.

but it didnt work because tsmuxer cant import ".thd" audio track.

then someone one suggest me this:

blackwalker....first off extract everything with eac3to..the video, audio and subtitle track. 2nd, where you went wrong is you extracted the truehd track as a truehd track, which is still the same issue of tsmuxer not being able to accept a truehd track. When you extract the audio track, name the extension as .ac3 and it will just pull out the core of the truehd track. Don't just rename the already extracted truehd track you have. You need to do it again. Let me do an example.

Lets say your file is called movie.m2ts (by the way I dont know why you just have the one m2ts file...a movie isn't always stored in one of those files...sometimes is spans multiple m2ts files.)

So, you do a command on that file like : eac3to movie.m2ts

Eac3to will list something like the following :

M2TS, 1 video track, 3 audio tracks, 8 subtitle tracks, 2:02:46
1: Chapters, 16 chapters
2: h264/AVC, 1080p24 /1.001 (16:9)
3: TrueHD/AC3, English, 5.1 channels, 48khz, dialnorm: -27dB
(embedded: AC3, 5.1 channels, 640kbps, 48khz, dialnorm: -27dB)
4: TrueHD/AC3, German, 5.1 channels, 48khz, dialnorm: -27dB
(embedded: AC3, 5.1 channels, 640kbps, 48khz, dialnorm: -27dB)
5: AC3 Surround, English, 2.0 channels, 192kbps, 48khz, dialnorm: -27dB
6: Subtitle (PGS), English
7: Subtitle (PGS), English

As you can see track 3 is a truehd track, with an embedded ac3 5.1 track. For this example (and yours will be very similar) do the following command to pull out the video track, the audio track (the core, not the whole truehd track) and the 2 subtitle tracks.

eac3to movie.m2ts 2:"c:\Movie\Video.mkv" 3:"c:\Movie\Audio.ac3" 6:"c:\Movie\Sub1.sup" 7:"c:\Movie\Sub2.sup"

Notice the audio line. I named it .ac3 instead of .thd. The simple process of putting it in as .ac3 will tell eac3to that it should just extract the .ac3 file and not the full truehd file. Once you have all those extracted remux them with tsmuxer. Just add the .mkv, the .ac3, and the subs.

side note : If it was a dts master audio file, you would need to name the file .dts and add the -core option.
Example 2:"c:\Movie\Audio.dts" -core

so...



just one question:

...he say "name the extension as .ac3"....and...."Notice the audio line. I named it .ac3 instead of .thd. The simple process of putting it in as .ac3 will tell eac3to that it should just extract the .ac3 file and not the full truehd file."

so i'm doing just a downcovert from true-hd to ac3? i mean i'm extracting the ac3 audio track
and not the full-hd track?

If this is correct, i think is the same thing if i use tsmuxer, selecting the audio true-hd track and telling to downconvert to ac3, or no?

If this is correct, there is no other way to extract the "TRUE-HD" audio track and join it with the video and subtitles?

thx!! :)

tebasuna51
21st January 2009, 10:47
so i'm doing just a downcovert from true-hd to ac3? i mean i'm extracting the ac3 audio track and not the full-hd track?

If this is correct, i think is the same thing if i use tsmuxer, selecting the audio true-hd track and telling to downconvert to ac3, or no?

If this is correct, there is no other way to extract the "TRUE-HD" audio track and join it with the video and subtitles?

BD specs force to have a thd mixed with an ac3 tracks.
- You can extract only the thd track:

eac3to X:\ #) *: "audioTrack.thd"

but a thd only can't be accepted by tsmuxer because isn't in BD specs.

- You can extract only the ac3 track:

eac3to X:\ #) *: "audioTrack.ac3"

and must be accepted by tsmuxer because ac3 is in BD specs, but you lose the HD info

- You can extract the mixed thd-ac3 track:

eac3to X:\ #) *: "audioTrack.thd+ac3"

this track is BD compliant and must be accepted by tsmuxer, other question is problems with the muxed output by bugs in tsmuxer. Check the tsmuxer thread (http://forum.doom9.org/showthread.php?t=134104).

Blackwalker
21st January 2009, 11:38
BD specs force to have a thd mixed with an ac3 tracks.
- You can extract only the thd track:

eac3to X:\ #) *: "audioTrack.thd"

but a thd only can't be accepted by tsmuxer because isn't in BD specs.

- You can extract only the ac3 track:

eac3to X:\ #) *: "audioTrack.ac3"

and must be accepted by tsmuxer because ac3 is in BD specs, but you lose the HD info

- You can extract the mixed thd-ac3 track:

eac3to X:\ #) *: "audioTrack.thd+ac3"

this track is BD compliant and must be accepted by tsmuxer, other question is problems with the muxed output by bugs in tsmuxer. Check the tsmuxer thread (http://forum.doom9.org/showthread.php?t=134104).

Thx for the info!!

there is no other program (other then tsmuxer) that can be used for the true-hd audio track??
(sorry for my english)

thx again!!

tebasuna51
21st January 2009, 18:22
Read this thread (http://forum.doom9.org/showthread.php?p=1232121#post1232121)

vamsiklak
21st January 2009, 21:50
hoa about lpcm and dts-hd
can i just use tsmuxer and create bd structure!???
i know true-hd isn't comptable with tsmuxer
please help
thanx in advance

tebasuna51
22nd January 2009, 01:03
I never try dts-hd, about lpcm read the Pcm2Tsmu in my signature.

Blackwalker
22nd January 2009, 11:43
THX tebasuna51, I'LL CHECK IT!

Blackwalker
23rd January 2009, 08:07
checked all threads but looks like there is still no way to have a blu-ray disc with true-hd audio track
playing ok on a ps3 or standalone player...only making a "iso" image of the DB structure, but thats
not what i was looking for....sigh!

so, i'll wait, and i'll downconvert the true-hd trak to ac3 using tsmuxer.....for now!

mochevolete
25th January 2009, 13:25
actually I'm converting the THD tracks to DTS full rate, and the result is very very good :)

tebasuna51
25th January 2009, 16:11
actually I'm converting the THD tracks to DTS full rate, and the result is very very good :)
And very very similar quality to ac3 core.

Maybe if you transcode THD to FLAC...