No sound when previewing MPEG2 in DVD authoring progs....

[bad_cardsuk]

Recently I've been trying to back up some old concert VHS tapes to DVD-R. The process has been like this:

Record from VHS to DVD-R

Take .vob files from the disc and then using TMPGenc demux the ac3 and m2v files.

Multiplex them again using TMPGenc to get a final mpeg2 file.

When I play this in media player it's fine, however when I try to make chapters using Ulead DVD workshop there is no audio during playback making it impossible to chapter correctly. I also tried TMPG DVD author and the same thing happened.

Does anyone have any possible idea's why this is happening?

Thanks for reading.

[GeorgeW]

Which version of DVD Workshop are you using? 1.x, 2.x, Full, Express, Trial, etc...

Some versions do not support AC3 audio (like older 1.x versions, and the 2.x TRIAL)

[daamon]

I had the same problem with TMPGEnc DVD Author (v1.5) until I discovered, as GeorgeW says, that it doesn't support the playback of the AC3 audio - even 2 channel.

I went ahead and authored and the audio plays fine and in sync.

Admittedly, it's a pain if you need to hear the audio for, say, selecting chapter points.

I got round this by using the WAV audio as the source, doing what I needed to do (selecting chapter points) and then going back and pointing TDA to use the AC3 equivalent of the WAV.

Of course, this assumes you have a WAV of the AC3...

Good luck.

[oldfart13]

You have to buy the AC-3 plug-in to hear the AC-3 audio...

[daamon]

You have to buy the AC-3 plug-in to hear the AC-3 audio...

...for version 1.6 of TDA. No susch AC3 plugin exists for v1.5 of TDA. Not sure about the other tools mentioned.

[bad_cardsuk]

Thanks for all of the help guys, I'm just about to try it with a wav file instead of ac3.

I'm using DVD Workshop 2 trial, which versions support ac3? Thanks!

Thanks again.

[GeorgeW]

Thanks for all of the help guys, I'm just about to try it with a wav file instead of ac3.

I'm using DVD Workshop 2 trial, which versions support ac3? Thanks!

Thanks again.

For DVD WS 2.x -- the Full and Express versions support Dolby Digital audio.

[oldfart13]

My version that I just used to produce a DVD with is 1.5.20.62 and it definitely needed the plug-in to hear the AC-3 sound...

When you start up the program there is a momentary flash that says AC-3 (in red), so you know the plug-in is installed...

It's also needed to encode and decode AC-3 sound in TMPGEnc DVD Express 3.0...