It's about size! at DVinfo.net

Michael Estepp · August 30th, 2004, 03:49 PM

Hey Folks,

I am trying to export a 2.5 hour video thats 40gigs onto a DVD... (4.7 gigs) I have cleaner and Vegas 5 - does anyone know which compression I should use that will keep the picture and audio nice?

Michael Estepp

Rob Lohman · August 31st, 2004, 01:37 AM

Well you have the following choices:

Video:
- Full resolution MPEG2: CBR or VBR
- Half resolution MPEG2: CBR or VBR
- Half resolution MPEG1: CBR (only probably)

Audio:
- Uncompressed PCM
- Dolby Digital AC3
(there are more, but we'll leave it at that)

2.5 hours is a lot to fit on a 4.7 gig DVD. At least do your audio
compression with AC3 at 384 kbps so that takes the least
amount of space.

Half resolution MPEG2 or MPEG1 will not look that great but
should easily let you fit 2.5 hours.

If you want the full resolution MPEG2 you will need a very good
encoder (like Canopus ProCoder) with multi pass VBR encoding
and pray it works out good enough. It isn't a lot of bits left for
video. Trial and error should give you an idea on how good it
can be done.

Dan Euritt · August 31st, 2004, 12:06 PM

you should be able to roughly calculate the average bitrate required to make that footage fit, then run short test encodes per rob's suggestion.

the type of source footage that you are using will have a big impact on whether or not it'll all fit, so do your test on the most difficult part of the footage.

August 30th, 2004, 03:49 PM	#1
Michael Estepp Regular Crew Join Date: May 2003 Location: Los Angeles Posts: 95	It's about size! Hey Folks, I am trying to export a 2.5 hour video thats 40gigs onto a DVD... (4.7 gigs) I have cleaner and Vegas 5 - does anyone know which compression I should use that will keep the picture and audio nice? Michael Estepp

August 31st, 2004, 01:37 AM	#2
Rob Lohman RED Code Chef Join Date: Oct 2001 Location: Holland Posts: 12,514	Well you have the following choices: Video: - Full resolution MPEG2: CBR or VBR - Half resolution MPEG2: CBR or VBR - Half resolution MPEG1: CBR (only probably) Audio: - Uncompressed PCM - Dolby Digital AC3 (there are more, but we'll leave it at that) 2.5 hours is a lot to fit on a 4.7 gig DVD. At least do your audio compression with AC3 at 384 kbps so that takes the least amount of space. Half resolution MPEG2 or MPEG1 will not look that great but should easily let you fit 2.5 hours. If you want the full resolution MPEG2 you will need a very good encoder (like Canopus ProCoder) with multi pass VBR encoding and pray it works out good enough. It isn't a lot of bits left for video. Trial and error should give you an idea on how good it can be done. __________________ Rob Lohman, visuar@iname.com DV Info Wrangler & RED Code Chef Join the DV Challenge \| Lady X Search DVinfo.net for quick answers \| Buy from the best: DVinfo.net sponsors

August 31st, 2004, 12:06 PM	#3
Dan Euritt Trustee Join Date: Mar 2004 Location: Carlsbad CA Posts: 1,132	you should be able to roughly calculate the average bitrate required to make that footage fit, then run short test encodes per rob's suggestion. the type of source footage that you are using will have a big impact on whether or not it'll all fit, so do your test on the most difficult part of the footage.