DTS - No Sound

[diogo6]

Hi, I've been burning dvds for quite a while now, and haven't had problems in a long time. But just recently I came across some titles with DTS soundtracks, and I just can't hear any sounds, even after taking out those tracks with Ifoedit, and just leaving the other tracks... hope somebody could help me out

thanks,

[hoops10]

Remeber with DTS, you need a DTS capable dvd player and a DTS capable receiver. Don't know if you have these or not, but that may be your problem. It is possible to keep the DTS stream, but you need to use Scenarist to do this (I don't know if Maestro will).

[The_Flash]

Maestro works with DTS tracks as well. For your receiver to recognize the first track as DTS, you may have to go in under ifoedit and change the properties of the first track to DTS. Often the DTS track is not the first track, and if you use the DVD-9 to DVD-5 guide to create new vobs, the first audio track's properties in the VIDEO_TS.IFO file are still the original values, which may be Dolby.

[diogo6]

thanks for the reply guys, just to give you a little more info, one of the movies I'm talking about is "From Hell" and from what I understand, the DTS soundtrack is the first track. Here's what IfoEdit states of the original ifo:

Title Set (Movie) attributes:
Video: MPEG-2 720x480 (NTSC) (NTSC 525/60) (16:9) (letterboxed)
Audio 1: English (DTS ) 6ch 48kbps DRC normal (ID: 0x88)
Audio 2: English (Dolby AC-3) 2ch 48kbps DRC normal (ID: 0x81)
Audio 3: Francais (Dolby AC-3) 2ch 48kbps DRC normal (ID: 0x82)
Audio 4: Espanol (Dolby AC-3) 2ch 48kbps DRC normal (ID: 0x83)
Audio 5: English (Dolby AC-3) 2ch 48kbps DRC director's comments (ID: 0x84)
Subpicture 1: English (2-bit rle ) (ID: 0x20, 0x21)
Subpicture 2: Francais (2-bit rle ) (ID: 0x22, 0x23)
Subpicture 3: Espanol (2-bit rle ) (ID: 0x24, 0x25)

I'm not even able to hear sounds when playing the vob files with PowerDVD or WinDVD. And you said something about changing values with ifoedit, can you please help me with that?

thanks,

[p3distxii]

Can you hear it when playing the original (retail) dvd?

[diogo6]

I don't remember, I no longer have the original dvd, just the vobs on my hd. I'll rent it again, and post it here. If you have any other suggestions, please post them here

[Xitrum]

Hi
I'm having a similar problem, I was trying to rip the Music CD "Eagle - Hell freeze over" which has a DTS and a LPCM sound track.
I have 2 questions:
1. I wanted to keep the DTS track, so I used DVD Decrypter to demux the track which gave me a DTS file with about 1.3Gig. my question is, am I using the correct tool to extract the DTS audio track? If not, what tools should I used? I have been searching the forum but can't find any reference to how to rip a DTS track, so I assumed the method is the same as ripping an AC-3 track.

2. The second question I have is: assuming the method I used was correct in question 1, I then proceed and used the CCE/IFO guide to encode the video stream and used Scenarist to author the DVD. I can import the movie and the DTS tracks into Scenarist OK, but when I tried to author it, it came back with an error and said "bit rate too high". Did I do anything wrong? assuming the step I used to rip the DTS sound track is correct. Am I right in saying that, if the step I used in Question 1 was incorrect, then using the correct method would eliminate my problem in Question 2?

Thanks in advance for your help.

[Octagon]

@diogo6

I did From hell. Yeah you have to take out the DTS track. Leave the 5.1 track and it will play like a champ. I dont know why we cant work with DTS though. Alls you need is IFO edit and nothing more.

[DIggedy]

Xitrum: Yes you've extracted the dts track correctly, the file size is so big because Eagles:HFO uses a full bitrate 1509kbps dts track.
The reason you're getting a 'bitrate too high' error is because the total of the video peak bitrate + the dts 1509 must be exceeding 10.08mbps in it's current form. To fix this you need to reencode the video with a lower peak bitrate, about 8.5mbps. If you are including any other streams in the track they must fit in this bitrate ceiling as well.

[diogo6]

Octagon, I have already done the extracting with IfoEdit, but I still won't get any sound. When you say extract the dts track, do you mean before I rip it or afterwards? And if before, what ripping program do you use, Smartripper or dvddecrypter?

thanks,

[Xitrum]

Diggery, thanks for your help. I'll try to reduce the Video bitrate and try again.

Another question, if they used the full DTS bitrate for the Eagle, Are there any softwares that we can use to reduce the DTS bitrate, like we have CCE for Video?

[DIggedy]

No, as of yet there is no software that will allow transcoding of dts tracks.
The only way to do this would be to individually record the channels through your reciever pre-outs and reencoding in Surcode.
However full bitrate DTS is as good as it gets fidelity wise, and even if you did reduce the bitrate the quality would certainly suffer, especially a music recording such as this. I would recommend leaving the dts as it is.

[Xitrum]

Diggery,
Thanks again for your quick reply.
You sounded like you done this particular DVD before?
If you did, can you tell me if I wanted the LPCM audio track included as well, what is the max Video bit rate I should use?
My guess is that I should use 7500 as the LPCM file size is almost as large as the DTS file size. Am I correct?

[DIggedy]

I havent done that dvd before but am aware of the specs. If you want to also include the LPCM, yes it is a similar (I think exactly the same... 1509) bitrate, so you would need to take the bitrate down to 7000 to include both (I'd make it 6980 just to play it safe)

[Xitrum]

Thanks DIggery. I'll try it when I get home tonight.

[DIggedy]

Just remember the 6980 will be your MAX bitrate, not average. Anything over that will cause the same error.

[Xitrum]

Thanks DIggery.
From what I can see in CCE is that the size of the video is affected only when I change the average bitrate. When I change the min and max bitrate the size does not change at all. Do you have any recommendation for the average bit rate for this DVD? I guess if I going to use both the sound track then the final size of the Video should be about 2Gigs as the sound tracks took up about 2Gigs, and adjust the average bit rate accordingly.

[Xitrum]

Hi DIggedy,
I just relised I've been calling you DIggery instead of DIggedy, Sorry about that.
I have another problem with DTS and hope that you can help me!
I followed what you told me yesterday and successfully encoded the DVD. However, after authored the DVD I used PowerDVD to play the movie, I did get the picture but no sound :confused:
Comparing the original IFO file and the authored IFO file I noticed this:
In the original IFO file, it shows (from DVD Decrypter):
the DTS is the first audio track after the Video track and it has an address of 0x89. The LPCM track is listed with the address of 0xA0

In the authored IFO file, it shows:
The DTS track has the address of 0x88
The LPCM track has the address of 0xA1

Is this where my problems with sound lied? How would I change the address for the sound track so it match the original?
When I was using Scenarist to author the DVD, in the track editor, I drag-and-drop the DTS sound track in first. Then the LPCM track after that because I saw the DTS sound track listed above the LPCM track in DVD Decrypter.
Should I re-try the authoring process again and drag and drop the LPCM track first before the DTS track?

Thanks.

[JJF007]

Well, if you put your DTS Track into Scenarist and you get NO errors and the track shows the right length (click with the mouse on the track and look down to the length) it should be allright.

If you play the DTS Track with your PC oder Stand-alone DVD Player you have to connect it to a DTS capable Suround Receiver over digital Interface (Cinch or Fiberoptic-Cable). If you don't have this, you will never hear anything. DTS will not decoded like Dolby Digital to your analog devices.

BTW: You can simply use DVD2AVI to extract any Track from the VOB Files (MPEG/AC3/DTS) - be sure to have the latest DVD2AVI Version.

[Xitrum]

Thanks for all your helps, I finally got it to work by adding the LPCM sound track first then the DTS sound track. Once I done that I got the correct addresses for the sound tracks.
:)

[diogo6]

this post turned out to be about something other than what I originally intended, but at least someone learned something :)

Now can someone please try to help me with this:

I can't get any sounds from dts titles that originally have dts as the first track. I'm currently trying to work with From Hell. When the original dvd is in there, I get sound, but once I rip it to my hd, then use powerdvd or windvd to play it with, I don't get any sound at all. Not even after extracting that audio track with IFOEDIT. Has this happened to anyone. Can someone please guide me on how to go about dts videos.

thanks,

ps: feel free to ask questions

[auenf]

i think that the first audio track needs to be PCM or AC3 (or M2A for PAL) for the DVD to become 'compliant'.

Enf...

[diogo6]

I'm doing the NTSC version

[Xitrum]

Diogo6, Is the DTS sound track is the only audio track in the DVD? I think there should be some other tracks as well, as not all DVD players can play DTS sound track. Check the DVD again for other tracks, if there is, I think you need to rip one of these track and add it in as the first track and your DTS sound track should be the second track.

[auenf]

Originally posted by Xitrum
Diogo6, Is the DTS sound track is the only audio track in the DVD? I think there should be some other tracks as well, as not all DVD players can play DTS sound track. Check the DVD again for other tracks, if there is, I think you need to rip one of these track and add it in as the first track and your DTS sound track should be the second track.

or create your own file that is just 'Go buy a DTS decoder' in a continous loop.

Enf...

[diogo6]

sorry for my stupidity auenf, but I don't understand what you meant by your last post. And, Xitrum, there are actually 4 other audio tracks on the dvd (check the 4th message on this thread on the first page, there's a list of all tracks there). And Xitrum, how would I go about inverting the order of tracks???

[Xitrum]

Diogo6,
I don't think you can change the order of the existing audio tracks, but you have to remove all the audio tracks, and add them back in again in the order that you wanted.

[auenf]

Originally posted by diogo6
sorry for my stupidity auenf, but I don't understand what you meant by your last post. And, Xitrum, there are actually 4 other audio tracks on the dvd (check the 4th message on this thread on the first page, there's a list of all tracks there). And Xitrum, how would I go about inverting the order of tracks???

i meant that instead of ripping the original DD stream, create your own sound that is a voice saying 'Go Buy A DTS Decoder' over and over.

Enf...

[DIggedy]

diogo6: Do you actually want to keep the dts stream in your project? Or will you only be using the ac3 instead?
To avoid the type of issues your having I'd just reauthor using Scenarist (or whatever program you feel comfortable in).
For example:
My last project was 'Road Trip'... I wanted to keep the dts track but had to reencode the video to fit 1xdvdr
1) DVD Decrypter - select 'demux' for both the video and the dts audio, I didn't bother copying any other streams.
2) re-encoded video using CCE
3) drag video into Scenarist track editor, (if you have multiple 0.99GB files use New>Multifile data in the data editor to place them in the same track)
followed by dragging the dts stream into that track.

4+)After this I used the original motion menu (grabbed by reencoding from a DVD2AVI project, not the simplest way, I know) which is another topic in itself and is explained elsewhere.

Assuming you don't want to bother with the menus though then you just have to drag the main movie track into a VTS and then use FirstPGC to link to the main movie PGC.

Unless I'm seriously missing something I'm quite sure theres no need to use IFOUpdate or anything like that if you are authoring a project from scratch.

By the way to check playback of dts content on a pc I use WinDVD (current version) as it decodes the dts audio (as a downmix) without the need for a dts decoder. Better than moving my PC into the lounge room to check!

I hope this is of some help.