Muxing ac3 and mpeg

gcam30 wrote on 12/4/2003, 6:11 AM
For some reason after I mux an ac3 and an mpeg file, I cannot hear a preview in DVD Architect. Here's the process: I extract the vob's from a disc using DVD Decrypter, then extract the audio from the vob's using DVD2AVI. I use the DVD2AVI project to re-encode the video portion in Tmpeg and I use Vegas ac3 encoder to convert the PCM audio to ac3. Since DVD Architect doesn't deal with seperate video assests, I use Tmpeg to mux the ac3 and the mpeg files together. Ive tried both the multiplex and simple multiplex settings in Tmpeg, but the resulting mpeg file has no audio when brought into DVD Architect. The DVD Architect manual says the files need to be muxed before being imported, but offers no suggestions on the best way to accomplish this. Is Tmpeg the proper way or am I missing something? Any suggestions would be greatly appreciated.

Comments

johnmeyer wrote on 12/4/2003, 7:53 AM
Don't mux. Just put the video into DVDA, and then, after double-clicking on the video in the main DVDA window, you will see, in the upper right corner, a place where you can specify the audio for that video. Drag your AC3 file to this text box.
gcam30 wrote on 12/4/2003, 8:05 AM
Cool. So after that I can go and add chapter points and everything like normal? Im at work now, so when I get home I am going to try your suggestion. It seems too easy though, because I remember reading in the manual that DVDA doesn't accept elementary streams. How is this different?
Thanks much for the advice.
vonhosen wrote on 12/4/2003, 8:58 AM
When you use Vegas to prepare files for DVDA it doesn't accept elementary (.m2v) video files. What it wants is a program stream (.mpg file extension) that doesn't contain audio. That way it will have the .mpg program stream header which DVDa wants & then you can add your .ac3 file.

I would imagine the corresponding setting in TMPGenc for "Stream type" would be "System (Video only)"

Encode your video with that stream type, encode your .ac3 as you have been then bring them to DVDA. (Or you could of course encode your video inside Vegas with the template)

This link is good for TMPGEnc advice on settings

http://dvd-hq.info/Compression.html
johnmeyer wrote on 12/4/2003, 9:55 AM
So after that I can go and add chapter points and everything like normal?

Yes.
gcam30 wrote on 12/4/2003, 12:44 PM
Im learning as I go here. Thanks a bunch for the input. Ill post a confirmation of success when Ive arrived.
kentwolf wrote on 12/5/2003, 12:14 AM
Also, if you have the video file and audio file (*.mpg & *.ac3), as long as they are the same root file name (MyFile.mpg, MyFile,ac3) and in the same directory, DVD-A will automatically associate the video with the audio.

You may have already known that, but I didn't notice it mentioned in this thread.

Thank you.