Silence is golden...

Zulqar-Cheema wrote on 7/28/2004, 3:33 AM
Audio Drop Out during PTT
I have done a search and found no answers (unless I'm hopeless)
I have seen plenty on capture but noting for PTT
During a PTT of a project I occasionally get audio drop out, a split second but can be noticed. The picture is fine and no blue screen as I have come to expect in the past during the dropouts. I also do a copy to VHS at the sometime and the dropout is on that as well so , not a tape problem.

I have noticed in the last 2 projects ,that at the end after credits and before my logo(AVI), I guess on the transition, quick loss of sound and again at the end of the logo during the cut to a generated black media.

I do have all processes turned off in the background.

Comments

farss wrote on 7/28/2004, 4:59 AM
Have you tried rendering the whole project out to a new AVI and listening to that?
beerandchips wrote on 7/28/2004, 5:50 AM
Is it at the same place everytime? At times when I have had audio dropouts on PTT it was caused by a bad rendered frame.
Zulqar-Cheema wrote on 7/28/2004, 6:18 AM
Farss, no I wanted to avoid a massive file and save on disk space, was thinking of giving a go.

Beer&Chips, appears the beginning of the video or the end, never noticed during the video, but haver never watched all the way though myself, but clients have never mentioned it.

The audio gapes are random so not easy to pin down, but certainly at the PC or V5 end.
beerandchips wrote on 7/28/2004, 6:40 AM
Are you dipping to timeline black or generated media black? Sometimes dipping or fading to timeline black has caused this for me (but not often).

Also, zoom in on the timeline and make sure everything looks ok (no accidental frames, etc.
Grazie wrote on 7/28/2004, 8:35 AM
Do you make pre-renders OR do the PTT thing and allow the system to "make" the missing files? If you don't wanna make a BIG file then make the pre-renders and see if that helps. DEFINATLEY render the suspect region and see if there is a flaw. BUt the point you are making is that this shouldn't be happening .. no matter what fixes we suggest . . you are asking that this s/w actually performs in the way you are expecting it to. But, there again doing the pre-renders may jsut get your pc over the maths that is going on.

Oh, have you thought of capturing "back" the file and analysing if there is a drop?

Grazie
Zulqar-Cheema wrote on 7/28/2004, 2:16 PM
1 : the fade is to generated black media
Grazie, you can not do a PTT without the machine do all the pre-renders, I have no control over what it renders V5 sorts that out.. Normal I do a pre-render using the TOOLS, Selectively pre-Render Video, when thats done I then do the PTT, reason being I have to manually start the VHS machine.

The pre-rendered files are in separate folder to the AVI's is this a problem?
Grazie wrote on 7/28/2004, 2:55 PM
Yes I know the pc is pre-rendering to PTT, and the pc does it itself. Where are the pre-renderings happenning? When I FORCE a pre-rendering session THAT folder is somewhere where there is a lot of free space. Do you have a drive with free space? Maybe having free space will help everything get the maths done - yeah? This is what i was suggesting.

Hey guy, you're asking the question now, "The pre-rendered files are in separate folder to the AVI's is this a problem? " . .what do you think? I'd be doing everything to give vegas a chance to get the process done ..

What I would do would:

1 - Set up a drive to solely do the forced pre-renders.

2 - DO the prerenders.

3 - Render THIS to a BIG avi file

4 - Bring this file back to a clean project.

5 - PTT from that.

This is what I do. I try to give Vegas as much a chance to do things in loads of space and keep it as simple as possible for Vegas.

Grazie
Zulqar-Cheema wrote on 7/30/2004, 11:34 AM
The pre-rendered clips are in a sub folder with the main AVI's all in the same drive.
so.. main folder = project name, then sub-folders = music, pictures, Video, pre-rendered. all on same drive (not c:/)


On your 3 just render to large file first no need to pre-render first, just takes more time.
if I did a big AVI I would play out via Scenelyzer so avoid V5 in case that is the cause of the problem.
Grazie wrote on 7/30/2004, 11:39 AM
I have pre-render folder on a separate drive .. .
Former user wrote on 7/30/2004, 11:53 AM
What RGB settings do you use for your generated black?

Dave T2