question about audio formats

[waylman]

Im working on my 1st home made DVD and have 4 different mpg's that I am using. The mpg's were captured and converted to .mpg using sony vegas 4. I am now using DVD Architect 2 to author the DVD. Everything is ready to go, but it says my audio needs to be recompressed. I have a feeling DVD architect will take a LONG time to prepare the files and burn them, so how can I avoid this problem with the audio in the future? Please see screenshot below. Thanks.

[daamon]

Hi waylman,

Use the latest version of GSpot to get info on the MPEGs and post the details here - especially the audio info. My suspicion is that it's uncompressed WAV / (L)PCM audio @ 1,536kbps...

If that's the case, it's easily handled.

Disclaimer: I don't know the tools you refer to, so I may be missing something. But it look straightforward...

[waylman]

GSPOT info:

[/img]

[daamon]

Mmmmm....????

I was hoping for some info on the audio. I think I must have the beta version 2.52 as the window looks different.

Either download that (the 2.52 beta version) or see if you can get some info on the audio from AVICodec.

These are all free... Sorry to bugger you about.

There is a possibility that the audio isn't at the required 48KHz (or 48,000Hz) and that's what it's referring to. But it says "the audio will be compressed"...

[waylman]

here u go.....

http://img48.exs.cx/img48/831/untitled17ya.jpg

also in the help section of DVD Architect it says this about the audio:

http://img124.exs.cx/img124/9120/untitled29gm.jpg

[jimmalenko]

Maybe it's detecting MP2 audio, and is trying to make it either AC3 or PCM ? That's what the help file looks like, anyway.

[waylman]

yes, it seems that way.....I guess when I converted from avi to mpg Vegas 4 created the wrong kind of audio...Hopefully I just missed a setting in Vegas somewhere that I'll catch next time.

[daamon]

Yep - MP2 and DVD Architect doens't like it.

I'd suggest either AC3 audio when encoding in future, or WAV (if you've got the room / your footage is sufficiently short - about an hour and a half). WAV is uncompressed and will take up a lot of space.

If you can get a WAV of your audio, use ffmpeggui to encode to AC3.

MP2 is only in the PAL DVD specs, not the NTSC DVD specs. That said, I'm surprised DVD Architect doesn't support it - other authoring tools do...

Or use an authoring tool that supports MP2 audio...

Good luck.

[lechtin]

Since you have both vegas and dvd architect, it means the dolby digital encoder is unlocked in vegas. Use that to encode to AC3 (in vegas, pick "render as" and choose file type AC3). You'll have to reder your5 audio and video separately.