horrendous time taken to render audio

macas wrote on 7/16/2009, 10:52 PM
can anyone help me? Am trying to render my audio and for a short 45 second project it seems to take hours to render two audio tracks. In fact I gave up before it finished calculating the time to render. I am using the templates for dvd as recommended by Sony.

this is doing my head in!! It only takes a few minutes to render the video so this seems very wierd!!!!


musicvid10 wrote on 7/17/2009, 7:41 AM
This is not normal and possibly indicates wrong settings.

Post the exact details of your audio media, project settings, effects / processing used, and render settings, and someone may be able to help you. Without some essential information, it's anybody's guess . . .
macas wrote on 7/17/2009, 2:18 PM
I have solved this problem now. I found another case on the net. If you mute a track Vegas responds in this manner and will never render. the fix is to ungroup the audio and delete it from your event if you dont want the audio or reduce the volume on each event to 0. Maybe this is something that will be fixed in the next update?
drbam wrote on 7/17/2009, 3:51 PM
I think you've gone down the wrong path. I've been muting tracks since version # 1 and have never experienced what you describe. In fact, its extremely rare that I don't have some tracks muted during a render and I certainly would have picked up on such a serious issue. That said, I do not have Vegas 9 so if you're using it, perhaps there is a problem?
Geoff_Wood wrote on 7/17/2009, 6:49 PM
Rendering with muted audio tracks works exactly as you would expect in V9, and does not alter render times on my setup(s).

Baffled as to what to suggest, apart from maybe some broken plugin....

musicvid10 wrote on 7/17/2009, 9:52 PM
Uhh, are you by chance trying to render "audio only" to a video template?
If so, kindly choose an audio template, and proceed accordingly.
You never did share with us the goal of your project; what is the usage?
macas wrote on 7/18/2009, 9:58 PM
Hi Am trying to render an audio only against an audio template. Goal of the project is to burn a dvd in Architect. Works fine without the track muted. I read of someone else experiencing the identical problem. Will keep using this work around until I hear otherwise!!
musicvid10 wrote on 7/18/2009, 10:42 PM
Muting or unmuting tracks should make no difference. I have a feeling we haven't got all the information.
I sometimes have as many as twenty audio tracks sitting in a project, with all but the finished 5.1 tracks muted during render.
Use the AC-3 audio template for DVDA; should take about ten minutes to render a full DVD's worth of audio.
macas wrote on 7/19/2009, 1:53 AM
thanks for your help, I shall try this. I think I have tried the AC-3 audio. Which one should I use for a bluray disk in stereo? I am also having trouble rendering video for bluray in AVC, so have tried MPEG2 which it will do as a m2v file.
farss wrote on 7/19/2009, 5:44 AM
Only yesterday I rendered mp3 audio out of a V9 project with many muted tracks.
That doesn't mean there isn't a bug. Some of the bugs being found in V9 require a very specific set of circumstances to repo.
I'd urge you to report this to tech support. You're going to need to be very precise about the steps to reproduce. I'd suggest also giving them your project file. A link to the other report of the same problem might help too.

gwailo wrote on 8/4/2009, 1:35 PM
i experienced a new bug in 9.0a which caused both audio / video renders to take hours.

People are now reporting that a pop can happen with 90 degree envelope changes.

I had no envelope change, but I got one hell of a pop. It reported as +650DB!!!

My renders were fine until they hit that spot.

I moved the audio clip to a new track, and my problems disappeared.

I love the 4 point envelope editing in 9.0, but version 9 is really not stable yet.

Geoff_Wood wrote on 8/4/2009, 10:18 PM
A 90 degree level change will of course cause a pop if anywhere but silence ! The characteristics of the pop depends on the amplitude and frequency of the signal you are 'shearing' . Think about a sinewave with a sudden level change 1/2 way up it's 'slope'.

'Snap To Zero Crossings' would be appropriate if right-angle volume envelopes are to be used, but doesn't exist in the context of Vegas, so just don't do 90 degrees !