DTS-1 audio track on DVD is silent ?

[aneng]

Hi,

I have a set of VOB / IFO files that I have used to burn a DVD. However, the audio track is silent - the video is ok. I have tried playing the VOB files directly on my PC in Powerdvd and also as a completed DVD in my standalone - both give silent audio.

I have imported and demuxed the VOB files into DVD-lab and it says the audio is "DTS-1 3F/2R" and under the status is says "OK[BE]".

I get no errors when burning or playing, just no sound !

Any ideas anyone ?

[RottenFoxBreath]

you have to have equipment and speakers capable of playing DTS,like a home theatre system,otherwise,its going to be silent,or if you had it,a 5.1 or stereo track.

[aneng]

Very strange. Surely my standalone (Philips DVP520) should be able to play it ?? If not, I presume I can convert the DTS track to something more suited to my equipment ?

[aneng]

Double "Ah" I've just been researching and found that I'm in for a hell of a ride trying to convert DTS to AC3. Bugger.

[guns1inger]

Very few DVD players can play DTS, outside of the all-in-one home theatre rigs.

[MOVIEGEEK]

With most DVD players you need to use the optical or coaxial out(RAW) to play DTS,on the PC you need to buy the full(retail) version or add on "audio pack" for PowerDVD or WinDVD.

[anzimike]

According to online manual at Philips UK web site dvp520 does not seem to support dts. As noted above dts is a bitch to convert, though you might want to look at hypercube transcoder, but that requires a dts decoder on your computer (eg windvd software player $50). The latest ac3 filter may now also support dts decoding. It's worth a try;
https://www.videohelp.com/tools?tool=AC3_Filter
There is also a tool at doom9.org called azidts 0.1 which may suport dts transcoding within the besweet interface;
http://www.doom9.org/Soft21/Audio/azidts.zip
best of luck.

[aneng]

Thanks for all the kind help people - it's much appreciated.

I've found a workaround now - I've got it playing in WinDVD and the sound is being recorded in CoolEdit Pro as a 48k 16bit stereo wav file.

Now the problem changes ! ..... I was planning on loading the VOB files into DVD-Lab, demuxing, deleting the DTS audio track and replacing it with my newly recorded Wav. ...but (there's *always* a 'but' in this bloody game isn't there ! ), the DVD consists of five VOB files (it's just one movie though), and doing it the way I plan, I'm going to end up with five Mpv video streams from the VOBs and one enormous Wav from CoolEdit. I can't see an obvious way to get all the Mpv streams into one 'Movie' container in DVD-Lab, so I can just slap on the Wav soundtrack. ...or is there another way ?? (as you can tell, I'm pretty new to this !).

The other problem I'm going to encounter is getting the audio and video sync'd back up, as there will be an extra bit of silence at the start of the CoolEdit recording, as well as at the end - due to having to manually start recording in CoolEdit once I've started it playing in WinDVD !! (likewise at the end too).

I'm trying this route as I can't face even more complications in converting the DTS stream into six separate wavs ('cos I don't know what the hell to do with six ! - I only want a plain stereo soundtrack !!).

Any ideas on this lot ???

[MOVIEGEEK]

1.I would rip the DVD with DVDDecrypter->IFO Mode->Stream Processing->Demux and go to Settings->IFO mode and set file splitting to none.
This way you will only have one M2V file and one DTS.
2.I assume you're recording the audio analog(through the speakers) to WAV,then use ffmpeggui to convert WAV to AC3.
3.Author with DVDLab.
When authoring the audio can be shorter than the video but not vice-versa.

[anzimike]

BTW, another workaround, When importing a vob series to dvd-lab you have the option to join vob's and demux, join vob's without demux or neither. Join and demux should give you one mpv stream and one dts stream like MOVIEGEEK's method above. Then import your wav. Place mpv in video window and wav in audio window and your off. Also if using dvd-lab pro you can add both audio streams, if you eventually plan on upgrading to a dvd player that supports dts output. You may also consider changing the wav audio to ac3 2 channel, using ffmpegGUI or besweet, to save some space on your final dvd. If you have a-v synch issues there is also in "Tools" section of dvd-lab, a tool to adjust audio delay to correct synch. Lots of ways to skin the proverbial cat around here.

[aneng]

Thanks for the advice ppl I have just two questions left ! .... I've got the wav converted to ac3 now, but DVD-Lab says the original DTS audio track is 2 seconds shorter than the wav file I have - and that's after trimming all the silence off both ends !

What's that all about ? !!

Lastly, I've discovered that DVD-Lab doesn't preview the audio with the video, so I have no idea how 'out' the sync is, in order to correct it.

Surely I don't have to compile the whole thing, play, guess, correct, recompile, etc etc ???

There's got to be a quicker way hasn't there ?

(Bearing in mind I'm trying to sync up a manually recorded audio track that is not exactly the same length as the video !)

[Paul_G]

Download dtsdec from http://www.rarewares.org/others.html and use

dtsdec -o wavall > filename.wav filename.dts = wav files

Or

dtsdec -o wav > filename.wav filename.dts = wav file

and then use the audio tool of your choice for wav to xxx

[jkleslie]

I've used VirtualDubMod to demux DTS audio to WAV format and BeSweet/GUI to convert the WAV to 5.1CH AC3. Turned out pretty well for me and the entire process only took about 30 minutes.

However, if you happen to try this and get a "livelock" error in demuxing the DTS file, do not use the WAV - it will be shorter than the original audio (this, unfortunately, has happened to me a number of times when demuxing DTS). I think I used Vegas to demux the audio to WAV in that case - I honestly don't remember.