AutoGk Unsupported Audio Help.

[41ex@nd3r]

I'm not new to using AutoGK for DVD backup and AVI conversion.

I mostly use it for conversion fom DivX to XviD, for playback on my PS3 without watermark.

However I've run into a snag.

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Video Properties:
DivX 5
128Kbps MEPG-1/2 L3 2ch
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I keep getting "Unsupported audio type" when it starts to demux the audio, although I'm pretty sure I've used AutoGK to convert videos with this audio codec before.. I could be wrong. Is this really an unsupported audio, or maybe its not working right?

In either case, is there any way to fix this or download a codec library of some sort to make the audio supported by AutoGK?

Any help is much appreciated.

Long live len0x!

[dat720]

The audio track maybe damaged.... try demuxing the avi to seperate streams then transcode the audio to ac3 or mp3... then try again.

The audio track you have there is simply MP3.... It would be better if you could recode the audio from the original source.

[41ex@nd3r]

The audio track maybe damaged.... try demuxing the avi to seperate streams then transcode the audio to ac3 or mp3... then try again.

The audio track you have there is simply MP3.... It would be better if you could recode the audio from the original source.

Well see, its happening with multiple files of the same audio codec. And I know I said I wasn't new to AutoGK, but I've never had to do anything besides fiddle with the hidden options sometimes, so how would I go about demuxing the .AVI seperately from AutoGK, and them implementing it into the AVI?

[yetanotherid]

I've run across the same problem myself. I don't think there's anything wrong with the audio as such, but the way it's saved or labelled or tagged (don't actually know) AutoGK doesn't want to know about it.
I think when it's happened to me I've wanted to convert a file type AutoGK doesn't play with to XviD, so I've used something like Super to convert it to a lossless format in an AVI container, then use AutoGK to convert it to XviD. But the way that program saves MP3 audio.... sigh.

Anyway yeah I'm pretty sure it's an easy fix. Open VirtualDubMod (you'll probably have to navigate to it's installed location where AutoGK is installed in Program files as I don't think AutoGK installs a start menu shortcut for it) and use VirtualDubMod to open the video. I assume it's an AVI?
Then from the top menu you'll see the Streams list. Open the list and select the audio track and then Demux. That'll save the audio to your hard drive as an MP3. Once that's done disable the audio track, select "Add" and add the MP3 you just saved to your hard drive.
From there use the File/Save as menu to re-save your AVI, making sure you select "Direct Stream Copy" for the video encoding as you do. Hopefully your freshly saved AVI will now play well with AutoGK.

[yetanotherid]

PS If the MP3 audio in your AVI happens to be of the variable bitrate variety, VirtualDubMod will have a sook about it and ask you if you want to keep the variable bitrate header, or something similar. You do.

[CWR03]

VirtualDubMod will have a sook about it and ask you if you want to keep the variable bitrate header, or something similar. You do.
Actually you don't, or you'll have audio synch issues.

It doesn't make any sense to remove and re-add the same file.

[yetanotherid]

Actually you don't, or you'll have audio synch issues.

So if you've got a variable bit rate MP3 as an audio track and you load it into VirtualDubMod, and virtualDubMod does it's worry wart thing regarding variable bit rate headers and asks you if you want to keep them, you're saying you don't want to keep them even though you've got a variable bit rate MP3 audio track?
I think you'll find it's when you don't keep them the audio synch issues begin.

It doesn't make any sense to remove and re-add the same file.

Why not? Do you know what tags/metadata is saved with an AVI that's got an MP3 audio track? And that there's no way VirtualDubMod might save the tags/metadata differently to the program which created the AVI originally?

I'm almost 100% certain that if you load an AVI into AutoGK and it displays the audio as "MEPG-1/2 L3" it'll whine about it being unsupported. And I'm almost as certain that if the audio is displayed as "CBR/VBR MP3 2ch" AutoGK will be as happy as a pig in s^&$.
And as certain as I am about those things, I'm nearly as certain that demuxing the audio with VirtualDub and loading it back up, then re-saving the AVI will fix whatever it is that AutoGK doesn't like.

There is a chance that as part of the process I may have saved the AVI without the audio after demuxing it, then re-opened the audio-less AVI and added then MP3 stream to it, and there's also a very slight chance that I may have converted the MP3 to PCM and back again before re-adding it to the AVI, but I have it in my head that simply demuxing it and re-adding it was enough, so I'm going with that until I'm shown to be wrong.

[yetanotherid]

LOL. I was just thinking.... maybe you don't even have to remove the MP3 stream and re-add it. Maybe simple re-saving the AVI with VirtualDubMod is enough on it's own. I'll have to try it again, but I doubt I'd been demuxing and re-adding for fun....

[yetanotherid]

Thinking about it, it mightn't be Super which produces the AVIs with the MP3 audio which display as "MEPG-1/2 L3" in AutoGK. It might be AnyVideoConverter which does it, and as a result has led me to have first hand experience with this problem, as I use AnyVideoConverter occasionally.

[41ex@nd3r]

Alright! Thanks alot guys, I was ready to smash my computer when I came across this problem, so I'll have to try what you suggest, see if it helps. I just hope my installation isn't corrupted somehow.