Help me troubleshoot missing audio codec

TeetimeNC wrote on 9/22/2010, 9:17 AM
I have an XviD MPEG-4 video in an AVI wrapper. When I drag it to the V9e timeline I only get the video. Using VideoInspector I see the required audio codec is not installed. VideoInspector says I need this codec: "MPEG 1 or 2 Audio Layer 1".

I've Googled and can't locate this codec. I downloaded and installed the K-Lite mega codec pack hoping it would be included but no luck. Interestingly, I can play the video WITH audio in Windows Media Player or VLC. What do I need here to decode the audio in V9e (32 bit)?

/Jerry

Comments

musicvid10 wrote on 9/22/2010, 9:48 AM
Installing the Xvid VFW codec from the source may solve your issue. Vegas has the right audio codecs, maybe just not in that wrapper combination.

However, you may have opened a can of worms by installing K-Lite on an NLE machine. The horror stories abound.

You "may" need to roll back to a known good system restore point and reinstall Sony apps if other things have stopped working correctly as a result.

Good luck.
TeetimeNC wrote on 9/22/2010, 10:37 AM
musicvid, thanks for the suggestion. I restored to the point just previous to installing K-Lite and installed the Xvid VFW codec 1.2.2 from Xvid.org, but I have the same problem.

Perhaps you or someone else can help me with Codec 101 - what is happening under the covers when VLC and WMP can play this AVI's video and audio stream, yet Vegas can only play the video stream? I would have thought all three applications would use the same codec.

Also, as I understand it, audio codecs have a code that tells the player what codec to use. Video Inspector says this AVI needs audio codec 0050. I verified that 0050 is not installed on my PC. When I search for audio codec 0050 I find lots of information about it but each download site says there is no download available.

I'm confused and will appreciate any information that will enlighten me.

/jerry
rs170a wrote on 9/22/2010, 10:45 AM
Jerry, give AviDemux a try.
John Rofrano helped someone on Creative Cow out in this thread (pictures included !!) using that tool.

Mike
musicvid10 wrote on 9/22/2010, 1:29 PM
"what is happening under the covers when VLC and WMP can play this AVI's video and audio stream, yet Vegas can only play the video stream?"

The difference is that those players use DirectShow filters and Vegas uses the older VFW set, so the audio simply may not show up depending on the combination of wrappers and extension. That's just a guess since I haven't been able to test one of your files.

Mike's suggestion to run it through AVIDemux, perhaps outputting the audio as PCM, or the whole thing as MP4, is a good one, and certainly worth a try.
TeetimeNC wrote on 9/22/2010, 3:03 PM
Thanks all for the info. I didn't understand that there were two different codec technologies and now it all makes sense. Mike and Musicvid - AVIDemux outputting audio as PCM did not work for me, but outputting as MP4 with audio as AAC did work.

Thanks again.

/jerry