Incorrect language copied while playing authored DVD

[BRFan]

When I play a dvd video with 2 audio tracks(1 english DTS track and 1 tamil Dolby track), both tracks play as tamil. Eventhough my player shows DTS and Dolby(in display)when it plays respective tracks and I can feel the sound difference in my home theatre, they both play in tamil. Pretty strange for me that works fine in my laptop...

I know that DVD cannot have a single DTS track and should have a Dolby track at least. But is it also required to have a single language Dolby ?

[Baldrick]

Have you made the dvd yourself? Or a commercial dvd?

You could open the dvd with mediainfo and see what it reports.

[jman98]

Well, more accurately the DVD standards do not allow DVDs with only DTS audio, but it is possible to make such DVDs yourself. I've got one. Even though it violates DVD standards, most DVD players will play it. The standards require that there must be at least one track that is AC3, LPCM or (only for PAL though) MPEG-1 layer II audio. DTS is allowed if one of those other formats is present. I've got a Hong King DVD where the soundtrack is only available as DTS but there is an AC3 commentary on the DVD so the commentary makes it OK to only have the soundtrack in DTS. It's the only DVD I've got like that. Your DVD sounds within specs to me as it's allowed to have one language in AC3 and another in DTS.

Perhaps your home theater cannot handle DTS audio. Just a guess. You'll need another DVD with DTS to test.

[yoda313]

@brfan - assuming this was a dvd created from another disc is it possible that you copied the wrong track? How many tracks were on the original disc?

The dts track should be the largest track as far as file size goes.

Your amp should have some kind of indicator that lights up when you play a dts track - does this activate when you select the track you think is dts?

If this is a homemade disc you made from another source I would recreate it from your original source.

Perhaps something was missed when you were extracting the tracks.

Without knowing more about the discs origins - ie store bought or homemade - its hard to know for sure.

Perhaps your home theater cannot handle DTS audio. Just a guess.

Perhaps the player is automatically going to the non-dts track somehow? If they are both playing the same thing maybe the one track isn't being selected at all.

Again we'll need more info on what the disc is (we don't need to know the title of the movie or tv show or whatever just whether or not it was a store bought pressed disc or something you made on your own).

Pretty strange for me that works fine in my laptop...

Do you mean it plays the proper language on your laptop?

[BRFan]

Have you made the dvd yourself? Or a commercial dvd?

You could open the dvd with mediainfo and see what it reports.

Pls find the snap below. It seems to have both tracks.

@brfan - assuming this was a dvd created from another disc is it possible that you copied the wrong track? How many tracks were on the original disc?

I downloaded two separate mkv files from net for each language track(1 english DTS and 1 tamil AC3). Then usedConvertXtoDVD to convert them to vob (separately - as I was unable to rip the tamil audio from the second mkv source).
Then with the help of DVD-lab pro2 authored dvd with 1st source (video + english DTS) and 2nd source tamil AC3.

Your amp should have some kind of indicator that lights up when you play a dts track - does this activate when you select the track you think is dts?

Yes, my DVD player shows indicator and can feel a bit whenever I switch each track but both plays same language.

Do you mean it plays the proper language on your laptop?

Yes, my laptop can play both and recognizes both.

Your DVD sounds within specs to me as it's allowed to have one language in AC3 and another in DTS.
Perhaps your home theater cannot handle DTS audio. Just a guess. You'll need another DVD with DTS to test.

My DVD player can play other DTS track...In addition, I use DTS 755(768 - VLC says) kbps and AC3 448 kbps tracks - I guess both are supported by all DVD players...

I will give a try by keeping an additional AC3 track for DTS track(Same language). Will keep posted. Thanks.

[yoda313]

@brfan - all I can suggest is to try it again. Something funny might have happened when authoring.

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@the forum in general - what about the 24bits the dts track is showing in the screen shot in brfans last post? Could that be a problem?

It does show its 48khz for the dts track which is correct for dvd audio. But what about the 24bit part? I see the ac3 track is 16bits. Could this impact playback of the dts track?

I guess both are supported by all DVD players...

Well technically these days any dvd player can support ac3 or dts. The dts will be passthroughed onto the amp for decoding. Some dvd players have multichannel line out rca jacks for processing but those were mainly for sacd if I remember right.

But there were plenty of inexpensive dvd players that did not have dts support in the early days. Nowadays I believe every dvd player you go out to buy new would have a dts logo on it. But you might still find an oddball no-name unit that doesn't - possible I suppose.

But the forum should chime in about the 24bit dts file. I'm not sure if it should be 16bit instead.