Recompression Blues?

BillyBoy wrote on 3/19/2003, 2:49 PM
Since getting DVD-A requires buying Vegas 4, I'll assume most are editing their videos in Vegas. What I find confusing and frustrating is while I known a MPEG-2 audio streams needs recompression based on current DVD standards for NTSC the problem is in going through the basic chapter building steps you get information that is of little use as far as how much disc space will be consumed once you burn the project. Therefore you are really blind during the all important video selection and chapter building phase relative to how many videos you can put on a DVD disc, how many thumbnails you can have, what if any menu backgrond music and so on. If you error on the light side you're wasting perfectly good disc space. If you error on the heavy size your project is going to get compressed reducting the qualtiy.

We got computers for Pete's sake, and since SoFo makes both products further refinement should be possible other than saying render only a video stream, then make a seperate render for audio. Why not DVD-A being smart enough once it sees you've dropped a MPEG-2 file that HAS a audio stream it could ask, up front, BEFORE it becomes part of your project... do you want me to recompress that for you?

This way, you'll know AS YOU BUILD your project far more acturately how many videos can be placed in your project. This probably isn't a problem if you only use 20% or so of the DVD, but come on, this is suppose to be a PROFESSIONAL grade application and accordingly many people will be pushing the DVD to the max and expect to get very close tot 4.7GB limit.

As it stands right now, you manually have to reender each MPEG-2 file you already had rendered and waiting to burn to a DVD or you need to compress the whole DVD reducing quality.

Comments

PeterWright wrote on 3/19/2003, 6:04 PM
This is why I find it better to render from Vegas as .avi, then when I know how much material I want to include on disk I can set the appropriate bitrate and only do one compression.

It would be nice to have a sort of table saying at THIS bitrate you can get THIS MANY minutes per Gb, but I guess that would vary depending on the footage content.
BillyBoy wrote on 3/19/2003, 7:06 PM
Sure. But I bet a lot of people are in my shoes. I have about 60 videos ALREADY rendered in Vegas AS DVD COMPLIANT files waiting to be put on DVD's. Having to re render all that, is a royal pain and I won't do.