Audio problems with MPEG-1 render

MNJ wrote on 3/20/2003, 2:36 AM
My latest project is a movie of wedding stills, which I set to music using a .wma (windows media audio) file. The audio sounds fine in Vegas 3.0c, and also in the .avi file I rendered. Now I'm taking that .avi file and rendering in Vegase it as MPEG-1 using the MainConcept defaults of Audio: 224 kbps, 44,100 Hz, Layer 2
Video: 29.97 fps, and the result is very "choppy" audio when I play the mpeg file in Windows Media Player (7.01).

Can someone tell me at which step I made my mistake. Was it:

a. using a .wma file instead of a .wav or .mp3 file?
b. re-rendering the .avi file instead of rendering from the originally Vegas .veg?
c. should I have done something like convert the audio to 48Khz (thought I read that some time ago, but not sure how to do it)
d. is WMP 7.01 not a good choice for previewing this?

Mike

Comments

TheHappyFriar wrote on 3/20/2003, 6:57 AM
is your video choppy? if i were you, i'd use vegas to convert the WMA (or another program) to a PCM WAV file, then put both the AVI and WV into Vegas, then try rendering it. From what you'r saying, your computer can't pump out video fast enough, but I doubt that (i have a p3-667 and can play 640x480 MPEG's and AVI's no problem). What's the size (resolution) of your MPEG, and the bitrate?
mjdog wrote on 3/20/2003, 11:28 AM
The video is okay (not choppy), although some of the pans and zooms are not as smooth as I would like it, but I think is has more to do with being an MPEG1 file. I used the default settings for MPEG1...I haven't tried using a custom setting. If I were to use a custom setting (e.g. change the default setting to high quality), does that make the file larger?

I will try converting the .wma to a .wav and re-render the .veg project. How do I do this...do I add the .wma to a fresh project, then render it (note: I don't have Vegas in front of me, so I cant check what options it gives for audio rendering).

What about my question on 44kHz vs 48kHz...knowing absoluting nothing about audio, why might one be better than the other?