Audio Only AVCHD Disc Authouring

[keysersose]

I have a TrueHD audio file as well as the AC3 core from it..

What I want is the audio only in AVCHD using a DVD5 - stick the disc in a BR player press play and get the TrueHD track to play - and dont want to have to fire up the projector..

Can I do this using just TSMuxer?

[deank]

Not directly, but it is really easy to do it. You need video stream to achieve what you need.

I already did this and if you're familiar with avisynth/x264 I can tell you how to do it - if not - just give me the length of the longest audio-track you expect to use and I'll send you one small AVC video stream to use

Dean

[keysersose]

great Thanks Dean!

I imagine longest track would be 90 minutes but of course will always vary disc by disc I make..

have never used avisynth/x264 so an email would be great..


Thank-you..

[deank]

I'd rather post it here, so other people can use it too.

Here is 2 hours (120 mins) blank 720x480p AVC video @24fps.

Download it - black_h264_video.rar - it is just 31KB, but unpacked is about 5MB.

Use it with tsmuxer and add your audio tracks, then tsmuxer will generate the output you need, cutting video to audio track length.

Let me know if it works for you

Dean

[keysersose]

wow Nice! especially Tsmuxer doing the sizing..!!

pretty impressive what you guys do around here I must say..



THANKS!

[deank]

I may be wrong about tsmuxer cutting the video to audio length - it could be the reverse

So you may need to put CUT-END in Split&Cut in tsmuxer.

[deank]

I was thinking...

For all those audiophiles out there I can create a small application audioBD and it will accept DD-AC3/LPCM/DTS-*/DD-TrueHD audio streams and will produce a simple BD structure to be used in BD players for listening to HiDef audio tracks. If there is interest, further I can implement playlists and option to have multiple audio tracks.

Dean

[keysersose]

Originally Posted by deank

I was thinking...

For all those audiophiles out there I can create a small application audioBD and it will accept DD-AC3/LPCM/DTS-*/DD-TrueHD audio streams and will produce a simple BD structure to be used in BD players for listening to HiDef audio tracks. If there is interest, further I can implement playlists and option to have multiple audio tracks.

Dean

I would imagine there would be LOTS of interest - PLEASE then include MLP tracks as one of the audio stream choices!!

[schlaufer]

Deank, just a suggestion: would it be much work to include chapterlists? I guess not, if you are passing it to tsmuxer.

[deank]

I don't really know what MPL files are.

@schlaufer: Chapters for audio tracks?

Well... thinking of concerts (as I have some) it might be a good idea to set chapter marks at each song start... right?

[turbojet]

MLP files are only found in DVD-Audio as far as I know. BD equivalent is TrueHD.

Chapters would definitely help but not the easiest thing to do, eac3to is probably the only way to really get the info.

[schlaufer]

Chapters may come various sources, in the worst case entered by hand

Yes, I mean chapter marks at the beginning of each new song, so one can create an HD Audio DVD (or even CDs in case of DD5.1/DTS) from a concert/music movie.

[deank]

Can someone provide a MPL sample? And do such files need special processing to get them to AC3 or (easier) to PCM if they are PPCM already?

Bottom line is: how to get them to AVCHD/BD compatible format.

And about chapters and playlists: let's move forward small steps at a time Let's first create playable BD discs and then add other options.

[keysersose]

MLP = Meridian Lossless Packing - they are about 1/2 the size of the wave files..

you can use EAC3to to convert MLP to either:

1-single 6 ch wave file
2- 6 mono waves
3-extract the AC3 core (DD5.1)

but we audiophiles want only the LOSSLESS tracks..

I can make you single song DVD-A disc as an ISO file or just a single MLP file - whatever you prefer..

you can use a program called DVD-A Explorer (Search here) to extract the MLP file from the DVD-A disc (you open the IFO file found in the Audio_TS folder)

[keysersose]

Originally Posted by deank

I'd rather post it here, so other people can use it too.

Here is 2 hours (120 mins) blank 720x480p AVC video @24fps.

Download it - black_h264_video.rar - it is just 31KB, but unpacked is about 5MB.

Use it with tsmuxer and add your audio tracks, then tsmuxer will generate the output you need, cutting video to audio track length.

Let me know if it works for you

Dean

Yup Works Great! made a BD using the AC3 core from a DVD-A disc - you need to set the cut option to the album length and disc plays for the length you set..

Now just need to add those MLP files..

Thanks

[keysersose]

I just made an avchd disc from the MLP files!

Used EAC3to to convert the MLP file to a single 6 channel wave file..downside is that the Linear PCM is roughly twice the size of the compacted MLP files..

my album was originally 24/96 kHz and only 34 minutes long - the avchd disc size is 3.7 GB and I didnt include a core AC3 track - looks like most albums will then need a dvd9..

I could downsample the waves to 48 kHz, but refuse to drop the quality..

The bonus though is that this method overcomes the watermark!!!!

The ideal solution here would be to encode the MLP/Waves to TrueHD and make the AVCHD with a TrueHD track and add an optional AC3 or DTS core....

[deank]

How did you create the single PCM file and was it usable in tsmuxer?

I managed to convert the MPL sample to AC3.

I tried to convert it to PCM but then it needed headers (pcm2tsmu) and then tsmuxer accepted it.

My PS3 plays the LPCM 5.1 but I can listen to it in stereo only, because my receiver is connected with optical and only bitstream is available so I can't test it.

Another question:

How can I use the .thd output from eac3to?

eac3to.exe d:\01MLP.mlp test.thd

TrueHD, 5.1 channels, 96khz
Creating file "test.thd"...
eac3to processing took 9 seconds.
Done.

[keysersose]

Originally Posted by deank

How did you create the single PCM file and was it usable in tsmuxer?

eac3to.exe 01mlp.mlp 01mlp.wav

generates a single 5.1 channel file which Tsmuxer sees as a LPCM file and plays and displays as Linear PCM on the PS3..

I managed to convert the MPL sample to AC3.

I tried to convert it to PCM but then it needed headers (pcm2tsmu) and then tsmuxer accepted it.

guess it should be .WAV not pcm..

My PS3 plays the LPCM 5.1 but I can listen to it in stereo only, because my receiver is connected with optical and only bitstream is available so I can't test it.

ok I see - assume you could see and play the DD (ac3) 5.1 stream though?

Another question:

How can I use the .thd output from eac3to?

eac3to.exe d:\01MLP.mlp test.thd

TrueHD, 5.1 channels, 96khz
Creating file "test.thd"...
eac3to processing took 9 seconds.
Done.

[/QUOTE]

My! That looks simple enough - is there some mandatory requirement that the AVCHD needs a core AC3 stream as well?

[keysersose]

Originally Posted by deank

How can I use the .thd output from eac3to?

eac3to.exe d:\01MLP.mlp test.thd

TrueHD, 5.1 channels, 96khz
Creating file "test.thd"...
eac3to processing took 9 seconds.
Done.

I just tried this on the album track - eac3to step was OK but TSMuxer doesnt recognize the file

"can't detect stream type"

[tebasuna51]

I think you can't convert mlp to thd:

eac3to v3.14
command line: eac3to "God Save The Queen.mlp" "God Save The Queen.thd" 
------------------------------------------------------------------------------
MLP, 5.1 channels, 24 bits, 96khz
This audio conversion is not supported.  <ERROR>