Burnt DVD -- No Audio

mordeith

Hi guys.
Someone asked me to try and burn a DVD for them recently. Initially they had imported the footage as .wmv files which cannot be burnt as a DVD (as far as I know). I converted the files to DV-AVI PAL and used Sony's Click to DVD to burn a DVD. It had to be in long play mode as the footage was over 2hrs long. The DVD burnt fine but there is no audio. I've tried playing it on my PC and DVD player but still nothing. I read something about an AUDIO_TS folder that should be on the DVD. I checked and there isn't one, only a VIDEO_TS folder. Anyone able to expand on this?
Thanks.

sceptre

Just to eliminate the last query - the AUDIO_TS folder is used by DVD-Audio discs only. Shouldn't have any content at all on a DVD-video disc so it's definitely not that. I'm not familiar with that particular Sony software I I can't be of any help there.

pickarooney

Can you play the individual VOB files in PowerDVD or something? Any luck with sound there? any idea if it was MPEG, PCM, AC3 audio?

dawballz

But don't you need an AUDIO_TS folder, even though there is no contents?
Open to correction, but I have seen DVD's with both folders and nothing in the Audio one.

mordeith

dawballz wrote:

But don't you need an AUDIO_TS folder, even though there is no contents?
Open to correction, but I have seen DVD's with both folders and nothing in the Audio one.

That's what I reckon based on what I've read. The video plays fine on all software, but sound is non existent. The file was converted from wmv. by StoikVideoConverter2.0 to a format called DV-AVI for PAL. After that the Sony DVD software took about two hours to prepare the movie for burning. I noticed that one of the steps involved something like "seperating audio". I assume that is what's supposed to happen? I'm going to try it again but use Roxio or Nero instead and see if that helps. Thanks for all the suggestions so far.

Chalk

load the vob files created into powerdvd or whatver dvd software you have,
they should play in there.

if audio is present, burn the vob files using nero so as to create a properly autthored disc, no audiot_ts could mean some of the files arent dvd standrad

if audio is not presnet go back to your source movie,
is it vbr audio? most recoding programs cant match that up to the source and it ends up getting screwed,
try recoding the audio to a wav before running it through the sony software again and it should be fine

mordeith

I re-burnt the DVD using Roxio DVD builder and the sound is fine now. However I had to burn it at low quality so it would fit on the DVD, which leads me to another question. When burning a music CD composed of .wav files it doesn't matter how big the files are in terms of MB, its just concerned with length of music, i.e. under 80min. How come then that this doesn't apply to DVDs? Or am I missing something glaringly obvious?
I may be wrong about the music CD thing mind

Chalk

120 mins high quality or 240 mins low quality is average for a dvd i think

use something like mainconcept mpeg encoder and you can control exactly what bitrates you use for your dvds

Khannie

You're right about the cd's thing mordeith. The reason is that cd audio has a fixed "file size : track duration" ratio. It doesn't compress the original file at all. The same isn't true of DVD's. You can make them lower quality (losing some of the information) and fit more on.

mordeith

OK guys,
Thanks for the info. Just wanted to satisfy my curiousity