MPG -> AVI no audio problem

[Jung Park]

Hello,

I have been using TMPGEnc to covert AVI files to MPG (so that I can
make VCD's) for quite a while. I had no problmes, except for the
times that the source AVI files were corrupted, and have been
converting a few scores of AVI files with this tool.

The other day, I went through my normal MPG encoding routine with one
AVI file, and found something was not right;

First of all, there was no audio. I am not talking about occasional
sound dropping. There was no audio from the very beginning to the
end. Absoulte silence.

Secondly, the converted MPG file was about 3 times bigger than the
size it should be. The movie plays okay (the video portion of it
anyway) from the first 1/3 of the MPG file, then after the movie ends,
the rest of the MPG is filled with a black, blank screen all the way
to the end.

I tried Xing MPG Encoder, too. Since I only converted a small portion
of the AVI, I don't know if Xing encoder also appends the blank
screen, but clearly, Xing fails to encode the audio, too.

The source AVI file looks okay. When I play it with MS Media Player,
it plays perfectly fine, and yes, with audio.

Has anyone encountered the same problem and was able to solve it?

Thanks a bunch in advance, and have a nice day.

_JP

[Karsten Sethre]

Yam...@dls.net (Jung Park) wrote in message news:<1ce1fba.02021...@posting.google.com>...
>[...]

> First of all, there was no audio. I am not talking about occasional
> sound dropping. There was no audio from the very beginning to the
> end. Absoulte silence.

>[...]

> I tried Xing MPG Encoder, too. Since I only converted a small portion
> of the AVI, I don't know if Xing encoder also appends the blank
> screen, but clearly, Xing fails to encode the audio, too.
>
> The source AVI file looks okay. When I play it with MS Media Player,
> it plays perfectly fine, and yes, with audio.

>[...]

Try opening the AVI in VirtualDub. Set the video to Direct Stream
Copy, and the audio to Full Processing Mode. Choose a different codec
(or even just uncompressed PCM). Save the AVI. Does it have sound?
If so, great, encode to MPEG with the new AVI. If not, something very
weird is happening. What audio codec was used?

[Jung Park]

Karsten,

Thank you so much for your help!!

When I opened the AVI file with VirtualDub, it indeed complained about
corrupted audio, saying something like it has detected improper VBR
audio encoding blah blah blah...

After saving the original AVI into a different AVI file with Direct
Stream Copy video and Full Processing Mode audio, the new AVI does
have sound, and when I converted that to MPG, now I have sound!!

I am so grateful and glad that I posted my question here.

Have a nice day.

_JP