Rendering Options at DVinfo.net

Michael Tobias · May 9th, 2007, 01:26 PM

This is probably a simple question but I'm curious. In Vegas is it better to PRE-render a time-line at the best quality before rendering out as a MPG-2 or is there really no difference from straight rendering to MPG-2 from the time-line?

Mike Kujbida · May 9th, 2007, 04:30 PM

I see no reason to do a pre-render so I render direct to MPEG-2 from the timeline.
If the video is over 80 min., I'll tweak the bitrate to get the most out of it.

John Cline · May 9th, 2007, 05:07 PM

It depends on which format you use for your pre-renders. If it's DV, then there is going to be a colorspace conversion issue.

DV is 4:1:1 and DVD MPEG2 is 4:2:0, if you render MPEG2 from DV, you end up with 4:1:0. 4:1:0 means that you will only have 12.5% of your original DV chroma resolution left on the DVD. Vegas generates all media and titles at full 4:4:4, so if you render directly from the timeline, all generated media and titles will end up at 4:2:0 on the DVD, although DV media will still take the 4:1:0 hit.

That's the long answer, the short answer is render directly from the timeline.

John

David Jimerson · May 9th, 2007, 07:47 PM

No reason to do a pre-render.

Michael Tobias · May 10th, 2007, 11:44 AM

Thanks to all for the information. The color space conversion makes particular sense.

May 9th, 2007, 01:26 PM	#1
Michael Tobias Regular Crew Join Date: Apr 2007 Location: Las Vegas, NV Posts: 45	Rendering Options This is probably a simple question but I'm curious. In Vegas is it better to PRE-render a time-line at the best quality before rendering out as a MPG-2 or is there really no difference from straight rendering to MPG-2 from the time-line?

May 9th, 2007, 07:47 PM	#4
David Jimerson Jubal 28 Join Date: Mar 2005 Location: Wilmington, NC Posts: 872	No reason to do a pre-render. __________________ www.wrightsvillebeachstudios.com

May 9th, 2007, 04:30 PM	#2
Mike Kujbida Inner Circle Join Date: May 2005 Location: Windsor, ON Canada Posts: 2,770	I see no reason to do a pre-render so I render direct to MPEG-2 from the timeline. If the video is over 80 min., I'll tweak the bitrate to get the most out of it.

May 9th, 2007, 05:07 PM	#3
John Cline Major Player Join Date: Oct 2002 Location: Albuquerque, New Mexico USA Posts: 333	It depends on which format you use for your pre-renders. If it's DV, then there is going to be a colorspace conversion issue. DV is 4:1:1 and DVD MPEG2 is 4:2:0, if you render MPEG2 from DV, you end up with 4:1:0. 4:1:0 means that you will only have 12.5% of your original DV chroma resolution left on the DVD. Vegas generates all media and titles at full 4:4:4, so if you render directly from the timeline, all generated media and titles will end up at 4:2:0 on the DVD, although DV media will still take the 4:1:0 hit. That's the long answer, the short answer is render directly from the timeline. John

May 10th, 2007, 11:44 AM	#5
Michael Tobias Regular Crew Join Date: Apr 2007 Location: Las Vegas, NV Posts: 45	Thanks to all for the information. The color space conversion makes particular sense.