MPEG Audio Streams Missing???

1marcus4 wrote on 11/18/2007, 10:09 PM

After dragging my mpeg2 files containing AC3 stereo audio onto the Vegas 8.0A timeline, I receive the error message
'Warning. An error occurred while trying to open a project file from a previous version. The proper stream could not be found in the media file."

Details
"Media file E:\Studio Vegas\Clips\Paul HL Video\(Ed)2005.mpg has changed enough that the media stream properties from the project file could not be applied. Default media stream properties were used."

In Vegas 6.0d these mpeg2 files work fine. Any ideas?

Comments

cbrillow wrote on 11/19/2007, 1:31 PM

There are some peculiarities in V8.0x that cause unpredictable results in interpreting mpeg-2 files with audio.

One such problem has been identified by Sony as a MainConcept issue. A workaround for this particular problem is to rename the offending file with a .vob extension. Might want to give that a try.

blink3times wrote on 11/19/2007, 3:32 PM

As far as I understood...Vegas will not import AC3 in that format. It will only import AC3 directly from a disk.

You can fool it though. Create a disk complete with vob's with some dummy video to file, then you can import the vob files. The AC3 SHOULD come out on the timeline in 6 separate wav files.

1marcus4 wrote on 11/19/2007, 3:39 PM

So since Vegas 8 interprets mpeg2 files differently than Vegas 6, I need to demultiplex the file and load those separate files into Vegas 8?

I will give that a try!

Thank you

cbrillow wrote on 11/20/2007, 9:23 AM

Vegas 8.0a will import mpeg-2 files with AC-3 audio, if they have been renamed with a .vob extension.

Open up the "Import" dialog box and change the filetype spec to "All files", which will allow the .vob filenames to be selected. It works for me without going through ridiculous workarounds, demultiplexing to separate streams, "tricking it" with some other scheme or encoding to mp4.