Out point + AC3 + Vegas output problems...

zornwil wrote on 5/16/2011, 6:03 PM

These two problems have become related...

So in DVD-Architect 5.0, which is up to date, in rendering a 4.7 GB DVD, I found that the out point does not actually change what is rendered, so it renders the entire much larger mpg file. First, this seems odd and I noticed that there was a bug corrected in 5.0b where it did not respect out points for blu-ray, so I wonder whether this is a larger issue or issue with some other workaround? Why render a portion of the mpg that is entirely not used?

Given this issue, I figured I'd try to go into Vegas Movie Studio HD Platinum 10 and just see how I could , but there I now find I cannot load the AC3 audio file, that the format which DVD-Architect supports is "not supported" in Vegas!!

And finally, when in Vegas, it seems that if I try to simply chop up an MPG and reuse it, it insists on rerendering the whole thing even if all I want to do is save the portion I want to keep, taking 1-2 hours to render instead of the minutes (even if many minutes) a save would take.

Any advice on any of these issues? They've all become related, as solving any one of them will allow me to use what I have instead of rerendering an 8 GB file. Thank you.

Comments

zornwil wrote on 5/16/2011, 6:28 PM

PS - I should add that as far as I can tell I am matching the width, height, frame rate, field order, and bit rate of the file and the output settings and project, in regard to the 3rd issue above.

zornwil wrote on 5/16/2011, 6:55 PM

PPS - correction, sorry...well, re the rerendering, turns out I don't think I can match, I was misreading as to the file stats. Running Bitrate Viewer I see it's a variable actual rate, even though I set it on the incoming capture (in different software, so no issue for this forum) to be a particular rate. It averages to what I set it to, but that's not the same as matching.

cbrillow wrote on 5/17/2011, 5:26 AM

IN and OUT points don't determine the size of the on-disc file, they merely instruct the player at which points to begin and end playing the program material contained in that file. If you want only that smaller portion of your clip written to disc, it must be edited and rewritten to new file, as you have done.

You're correct that Vegas doesn't support the import of AC-3 audio files, despite the fact that it can create them during render.

I use Vegas Pro, which supports Smart Rendering of mpeg-2 files under certain circumstances, but I don't know if Vegas Movie Studio has that functionality.

There are a couple of fairly inexpensive programs -- Video Redo and Womble MPEG Video Wizard -- that can be used to chop up mpeg files and write them so that DVD-A doesn't have to re-encode them. I use Womble very often for editing mpeg-2/AC-3 files from my DVR, and subsequent burning to DVD from DVD Architect.

zornwil wrote on 5/17/2011, 5:46 PM

Thanks much. I was just playing with Video Redo, and I'll take a look at Womble.