No audio on burned DVD

[crichtonjohn]

Hopefully some kind soul will give me an idea of what to do to begin to solve this problem.
I have made many many many successful avi conversions using VirtualDub and Tmpgenc and then burned them to DVD using Tmpgenc DVD. All wonderful, no problems. Then yesterday I burned a project and there was no sound. Very strange, I thought I must have done something wrong. So I went back and did it again very carefully and again no sound. Video is fine, menus work, just no sound. The individual converted files play perfectly on my computer. Only after compiling them to DVD do they not have sound.
I have tried two other DVD authoring programs and got the same result. No sound. I thought maybe there might be something weird with the original avis so I tried it with an avi that I have converted and burned successfully before, and the same result. No sound.

I have done this many times so I know I am doing it right, so I assume something must have changed on my computer. I did a system restore back to a time it was working, but that did not help.

Does anyone have any ideas on what could be causing this? I have sifted through the forum posts and not found this same problem. Any help would be greatly appreciated.

Thanks

[crichtonjohn]

More information. I have just discovered that neither Tmpgenc, VirtualDub nor VCD Gear will open any MPGs that I have created. Strange since Tmpgenc created them itself. They will load MPGs others have created. The MPGs play perfectly in Windows Media Player and other players.

Does this sound like some weird codec thing? I have not added or changed any codecs in months.

Thanks

[canadateck]

You played the DVD on your Computer and there was no sound?

This does sound strange.

[canadateck]

is the Audio AC3? Maybe a corrupt AC3 Codec?

[crichtonjohn]

Yes, when playing the burned DVD on my computer there is no sound. Also no sound when played on my stand alone DVD player.

As I said the individual converted files play perfectly before compiling to DVD.

There is no AC3 involved in the original or the converted files.

Thanks

[borax]

Demultiplex the MPGs that you have created (TMPGEnc Mpeg Tools).
Check if the audio itself is ok (should be 48 kHz!).

Try to author with the elementary streams (TDA has no problems with elementary streams)

If the problems persists, convert the audio first to wav and then the resulting wav to mp2 again (with BeSweet for example).

[mats.hogberg]

I have just discovered that neither Tmpgenc, VirtualDub nor VCD Gear will open any MPGs that I have created. Strange since Tmpgenc created them itself.

No, not strange at all. VirtualDub and TMPGEnc can't open mpeg2. VCDGear, I've only used for getting the mpg out of a VCD/SVCD - that's it. Didin't occur to me to try to open an mpg with it, so I can't say if it's supposed to.
Could you get the details of your mpgs with latest GSpot (beta)?

/Mats

[guns1inger]

If you load the disk with DVD Shrink, what streams does it see ?

[canadateck]

VirtualDub Rather VirtualDubMod can open Mpeg2 and Vob files. So can Tmpgenc.

[crichtonjohn]

Thanks for the responses.

Here is what G-spot says:
DirectShow claims to be able to play the file. The following combination of filters were used:

{C:\Documents and Sett..-..sktop\5\The.Pilot.mpg} (Source)
{Ligos MPEG Splitter} (Splitter)

{Ligos MPEG Video Decoder} (Video Decoder)
{Overlay Mixer2} (Video Post-processor)
{Video Renderer} (Video Renderer)

{Ligos MPEG Audio Decoder} (Audio Decoder)
{Default DirectSound Device} (Audio Renderer)


DVD Shrink says the audio is Mpeg-1 2-ch unspecified.

Demultiplexing resulted in an Mp2 file that played fine. I'm not sure how to check if its actually 48. It should be. Thats the setting that was used.
I have tried using the wav file as the source for the mpgs, got the same results. I will try elementry stream idea.

[crichtonjohn]

Update:

Elementary streams idea did not work. I also switched from Ligos to Main Concept encoder/decoder. It made no difference.

I have also uninstalled and then reinstalled programs. Still doesn't work.

[crichtonjohn]

Well I guess noone has had this problem before. I guess I'm left with wiping the harddrive and reinstalling everything.

[lordsmurf]

DXMAN and ditch unneeded/unknown codecs. Just be careful not to wipe system codecs.