BR: rendering an already rendered file from Vegas?

glmccready wrote on 1/13/2011, 10:37 AM

I've burned HD to DVDs but now have a Blu-ray burner. As I requested a Blu-ray burn I noticed DVDA was re-rendering my already rendered video from Vegas Movie Studio. The estimated time was over 8 hours. When I burned HD DVDs of similar length it I don't think it took nearly that long,and I don't recall it doing a (re-)render?

Any ideas why it would take 8 hrs for BR, when HD DVD was an hour or so? &
If I rendered in Vegas Movie Studio why would DVDA have to re-render?

Thanks, just trying to make sure I didn't miss some setting...
Gary
PS Vegas took 3 1/2 hrs to render BR M2T file..

Comments

Steve Grisetti wrote on 1/13/2011, 11:13 AM

How long it takes DVD Architect to render is a combination of how fast your computer is, how long your movie is and what kind of video files you're putting into DVD Architect.

If, in Vegas, you select the option to Make Movie, then Burn to DVD/BluRay, then BluRay Disc, the program will output a video format (M2T) that should take very little rendering.

(Remember that, in addition to your video, your menu pages also have to be rendered -- and that too can take time, depending on how complicated they are.)

glmccready wrote on 1/13/2011, 1:43 PM

Thanks Steve,

I am using a M2T file, and my menus are pretty simple (no motion). I was just curious because the only thing I changed was the mpg for the m2t. Eight hours seems long but I guess I'll just let it run over night.

Gary

PeterDuke wrote on 1/14/2011, 6:10 AM

Check that the template you are using to render in Vegas MS agrees with one of the accepted formats for no re-render in DVDA, as specified in its manual. (The page depends on which version you have. For instance in DVDA Pro 5.2 it is on page 193.)

I presume your .m2t file is HDV MPEG2 1440x1080 and you are rendering to that form in Vegas.

Note that unlike Vegas, which uses a multi-threaded codec, DVDA uses only a single threaded codec (only uses one core of a multi-core processor) and so will take longer to render if it has to.

If your template in Vegas matches your source and you haven't done any edits which affect frame detail (such as colour changes, subtitles, transitions, etc), then those frames should be smart rendered and passed through very quickly (with a notice to that effect).

Don't forget in Vegas to render out the video and audio into separate files, otherwise the audio will be re-rendered for sure.

glmccready wrote on 1/14/2011, 8:17 AM

Thanks Pete,

I'm not exactly sure what my rendered file properties are, I render it a month ago. I think I might have chosen 1920 x 1080, 24p instead of 60i, but I'm not sure how to check this? When I look at properties it doesn't show frame rate, data rate is 25816. It does play in windows media player just fine, and looks great.

I've tried to re-render with specific parameters 30,000 date rate and 29 frames per second but have been running into problems, comes out as 1 hr 1 min instead of 1 hr14 min (another topic)
Thanks for your input,
Gary

PeterDuke wrote on 1/14/2011, 5:59 PM

A very useful tool to have is MediaInfo
http://mediainfo.sourceforge.net/en

For least hassles and best performance, set the project properties in Vegas to match your source. When you create a new project, click on the icon (looks something like a folder icon in older versions but different in version 10). Then when you render out your project, choose a template listed in the DVDA manual which is closest to your project.