Corrupted sound files after rendering?

CFL wrote on 2/10/2011, 4:15 AM
Have a video project with 5.1 sound burning to DVD for final product. Camera video clips dragged to timeline automatically place grouped sound on "front" sound channel. I drag music clips for project to "music" channel. Also have a sound effect (helicopter) that I placed on "sound effect" channel. Used envelopes to raise dialogue and lower music track when simultaneously playing. Sounds GREAT through headphones on computer. But . . .

When I render (MPEG-2 and AC-3) and burn a DVD, and play it on the home theater, the music tracks are terribly unbalanced, with 95% of the music coming out of the right hand Paradigm monitor. I went back and checked the panning controls, and they were centered just fine. Have done some experimenting/troubleshooting (with DVD-RW), even moving music pan control to far left and forward on project "music" channel. Music on DVD still comes out of right speaker. Checked by changing amp/processor from 5.1 to stereo and played DVD. Sound still comes out of right side. Checked with prerecorded movies and commercial music CD's, and sound is balanced and perfect.

As I mentioned, music tracks are perfectly balanced when listening from computer through headphones, even if rendered and saved to hard drive. But after DVD burn, 95% of sound comes out of right side, and sound system checks out fine with other sources. What am I missing? Thanks!
Steve

Comments

Markk655 wrote on 2/10/2011, 5:52 AM
Not sure why that would happen...As a quick check, make sure that you leave AGC (autogain control) off. That can sometime play with overall volume of tracks. For R vs. L, is it predominantly only one audio track that perhaps in unbalanced? Or are they all unevenly balanced?

In the mixer during preview, are they balanced?

If you reload the rendered file back into Vegas, what do the waveforms look like (are they unbalanced between L and R as well)?

Do you have the unbalanced playback only on a specific playback unit (eg DVD player)? or can you try it out on different units?
CFL wrote on 2/10/2011, 6:43 AM
I'm using VMS HD Platinum 10. Can't find an "AGC" or "Autogain Control" in any of my tools to check to see if it's on or off.

When I play the project, all of the 5.1 Master channels in the mixer are lit up and front and rear are balanced left/right. The "Preview" channels in the mixer stay dark.

Have never reloaded a rendered project back into Vegas--and don't even know how to! I just get it the way I want on the timeline, preview it in AVI in Windows Media, and if it looks and sounds right, save it to hard drive and burn a DVD. But this has me stumped as to why everything sounds good--except the final DVD when played.

Deck plays all other CD's and DVD's just fine through same system; just VMS DVD's that are unbalanced, but have not tried playing the VMS DVD on another deck. Thanks!
Steve

p.s. Just listened to the DVD on the computer in WMP, and the left channel audio is also very weak when DVD is played on the computer, listening through headphones.
Markk655 wrote on 2/10/2011, 9:04 AM
AGC is in the render dialog when you go to render the movie, click custom and then click on the audio tab.

To reload something into VMS (eg. a DVD), you can just use the explorer or click-drag one of the .vob file to the timeline. I don't think you need to relabel the extension .mpg.