Is 8Mb/s the highest in Vegas? at DVinfo.net

Lee Mullen · January 16th, 2011, 06:42 AM

How can one go higher or is that not possible and what is the overall effect on image quality? I'm referring to when rendering in HD.

Edward Troxel · January 16th, 2011, 07:37 AM

The highest what?

Lee Mullen · January 16th, 2011, 07:28 PM

Erm..Bitrate.

Leslie Wand · January 16th, 2011, 09:00 PM

bitrate for what? dvd, mp4, mpg, whatever?

Adam Stanislav · January 16th, 2011, 09:19 PM

What does bit rate have to do with editing?

Vegas edits uncompressed bitmaps/video frames. They have no bit rate while in Vegas. Bit rate is only meaningful with certain (not all) file compression codecs. And Vegas can both read and write various file formats. It also supports third party codecs. So there is no "highest" bit rate in Vegas.

Leslie Wand · January 16th, 2011, 10:15 PM

i think the op might be after rendering bit rates?

Jeremy Dallek · January 16th, 2011, 11:32 PM

Maybe he's talking about color depth? 8bit/10bit/32bit etc?

Leslie Wand · January 17th, 2011, 12:43 AM

maybe he's after a 2 bit rate?

Rainer Listing · January 17th, 2011, 12:55 AM

Lee, there may be a bit of confusion over mbps and Mbps. They are the same in this context, just don't confuse them with MBps. 8Mbps is the default for Sony's AVC at HDV resolution. For compressed HD, choose your codec, AVC or MainConcept and click on the "custom" button. The max for AVCHD is 16mbps which is fine for quality. The default for Mainconcept is 25mbps, which already is more than an AVCHD camera bitrate, but you can go as high as 80mbps.

Lee Mullen · January 17th, 2011, 04:12 AM

WMV format. I want the best image quality thats all.I'm still a novice in Vegas and want to render the best video for Vimeo and DVD.

Seth Bloombaum · January 17th, 2011, 11:30 AM

With respect, "best" is a difficult concept to deal with in rendering video quality. If 8 is good, wouldn't 16 be better? Why not 32Mbps - that should be 4x better right? Why stop there, when 100Mbps allows so much more?

The concept we have to deal with, IMHO, is "good enough". Is my render good enough for Vimeo? Are you seeing things you don't want at 8Mbps WMV when Vimeo spits it back?

Once you select "custom" on the render dialog, you'll see all the choices. 8Mbps is just a template, though it should be plenty for HD WMV distribution.

You may get slightly better picture-quality-for-a-given-bitrate with AVC/MP4 codecs. However, at high bitrates that difference is so very slight, and WMV is very, very good indeed, and a solid encoder.

DVD is different - if you're working with DVD Architect, best results come from rendering a standards-compliant MPEG2 video and AC3 audio files in Vegas. There's a bit to learn about that export process, but, if your video is less than an hour, select one of the "NTSC DVD for DVD Architect" MPEG2 templates and go into the custom dialog and make sure the bitrate doesn't exceed 8Mbps. Then, render your audio to AC 3 separately. These two files should be picked up by DVDA without re-rendering if you've done them correctly.

That's just an outline of the DVD process. There a plenty of posts and a few helper scripts for DVD output. Edward Troxel has written great beginner guides in his excellent newsletters, and they are a very worthwhile read.

Lee Mullen · December 12th, 2011, 06:01 AM

The presets in vegas for WMV are low bitrates, why is this??

January 16th, 2011, 06:42 AM	#1
Lee Mullen Join Date: Dec 2010 Location: Western Australia Posts: 576	Is 8Mb/s the highest in Vegas? How can one go higher or is that not possible and what is the overall effect on image quality? I'm referring to when rendering in HD. Last edited by Lee Mullen; January 16th, 2011 at 07:29 PM.

January 16th, 2011, 07:37 AM	#2
Edward Troxel Sponsor: JET DV Join Date: Dec 2001 Location: Southern Illinois Posts: 7,953	The highest what? __________________ Edward Troxel [SCVU] JETDV Scripts/Scripting Tutorials/Excalibur/Montage Magic/Newsletters

January 17th, 2011, 11:30 AM	#11
Seth Bloombaum Inner Circle Join Date: Sep 2003 Location: Portland, Oregon Posts: 3,420	With respect, "best" is a difficult concept to deal with in rendering video quality. If 8 is good, wouldn't 16 be better? Why not 32Mbps - that should be 4x better right? Why stop there, when 100Mbps allows so much more? The concept we have to deal with, IMHO, is "good enough". Is my render good enough for Vimeo? Are you seeing things you don't want at 8Mbps WMV when Vimeo spits it back? Once you select "custom" on the render dialog, you'll see all the choices. 8Mbps is just a template, though it should be plenty for HD WMV distribution. You may get slightly better picture-quality-for-a-given-bitrate with AVC/MP4 codecs. However, at high bitrates that difference is so very slight, and WMV is very, very good indeed, and a solid encoder. DVD is different - if you're working with DVD Architect, best results come from rendering a standards-compliant MPEG2 video and AC3 audio files in Vegas. There's a bit to learn about that export process, but, if your video is less than an hour, select one of the "NTSC DVD for DVD Architect" MPEG2 templates and go into the custom dialog and make sure the bitrate doesn't exceed 8Mbps. Then, render your audio to AC 3 separately. These two files should be picked up by DVDA without re-rendering if you've done them correctly. That's just an outline of the DVD process. There a plenty of posts and a few helper scripts for DVD output. Edward Troxel has written great beginner guides in his excellent newsletters, and they are a very worthwhile read. __________________ 30 years of pro media production. Vegas user since 1.0. Webcaster since 1997. Freelancer since 2000. College instructor since 2001.

December 12th, 2011, 06:01 AM	#12
Lee Mullen Join Date: Dec 2010 Location: Western Australia Posts: 576	Re: Is 8Mb/s the highest in Vegas? The presets in vegas for WMV are low bitrates, why is this??

January 16th, 2011, 07:28 PM	#3
Lee Mullen Join Date: Dec 2010 Location: Western Australia Posts: 576	Erm..Bitrate.

January 16th, 2011, 09:00 PM	#4
Leslie Wand Trustee Join Date: Mar 2004 Location: upper hunter, australia Posts: 1,410	bitrate for what? dvd, mp4, mpg, whatever?

January 16th, 2011, 09:19 PM	#5
Adam Stanislav Trustee Join Date: Oct 2009 Location: Rhinelander, WI Posts: 1,258	What does bit rate have to do with editing? Vegas edits uncompressed bitmaps/video frames. They have no bit rate while in Vegas. Bit rate is only meaningful with certain (not all) file compression codecs. And Vegas can both read and write various file formats. It also supports third party codecs. So there is no "highest" bit rate in Vegas.

January 16th, 2011, 10:15 PM	#6
Leslie Wand Trustee Join Date: Mar 2004 Location: upper hunter, australia Posts: 1,410	i think the op might be after rendering bit rates?

January 16th, 2011, 11:32 PM	#7
Jeremy Dallek Regular Crew Join Date: May 2009 Location: Minneapolis MN Posts: 40	Maybe he's talking about color depth? 8bit/10bit/32bit etc?

January 17th, 2011, 12:43 AM	#8
Leslie Wand Trustee Join Date: Mar 2004 Location: upper hunter, australia Posts: 1,410	maybe he's after a 2 bit rate?

January 17th, 2011, 12:55 AM	#9
Rainer Listing Major Player Join Date: Jun 2008 Location: Nowra, Australia Posts: 440	Lee, there may be a bit of confusion over mbps and Mbps. They are the same in this context, just don't confuse them with MBps. 8Mbps is the default for Sony's AVC at HDV resolution. For compressed HD, choose your codec, AVC or MainConcept and click on the "custom" button. The max for AVCHD is 16mbps which is fine for quality. The default for Mainconcept is 25mbps, which already is more than an AVCHD camera bitrate, but you can go as high as 80mbps.

January 17th, 2011, 04:12 AM	#10
Lee Mullen Join Date: Dec 2010 Location: Western Australia Posts: 576	WMV format. I want the best image quality thats all.I'm still a novice in Vegas and want to render the best video for Vimeo and DVD.