Very Long AC3 Encodes

Sidecar2 wrote on 4/15/2005, 9:31 AM
Encoding a 54-minute collection of odd-resolution computer sims in Vegas 5.

The first two clips and the last have audio, the rest have no audio.

I begin the AC3 "render-as" to make the sound track for DVD Architect 2. It counts up to 10%, indicates the estimated time as 7 minutes, then slows to a crawl, ultimately indicating a 2 hr 20 min encode, maybe. It seems to take longer the further into the encode I go.

I tried rendering the whole thing as a looped region; tried renaming the file and starting over; I rendered the existing audio as wav files and relayed them in; added a phantom sound track with its level at zero so something was there the entire length of the show. All still need an extremely long encode.

Normally the AC3 render is less than half the length of the show: a five minute video renders in a couple of minutes or less.

Why would a 54 minute show that has very little audio in it require upwards of 2-1/2 hours or more?

Comments

B_JM wrote on 4/15/2005, 10:23 AM
there is a small bug ... place a track of audio for the length of of the project -- it may be a recording of background noise or a recording of nothing ... but drag it out the whole length of the project ..

pan to center (default) of 5.1

Liam_Vegas wrote on 4/15/2005, 11:03 AM
What Vegas version are you running? I used to get this with 5.0b. Haven't seen it since I upgraded to 5.0d.

However in my case it seemed maybe slightly different. On some .AC3 renders it would crawl along at an incredibly slow rate... my solution was to simply cancel the render and then immediately initiate another render. It would then run along at a normal pace.

So... not sure if what I used to see was what is happening to you (it is the initial 10% that you meantion at normal speed which is different to my issue).
Sidecar wrote on 4/15/2005, 8:40 PM
Replying from home...

Running 5.0d build 194