Vegas 7 Two Pass VBR rendering deteriorates over time

Xxantcha · 06-21-2007, 07:43 AM

The video I'm rendering starts out perfect for the first 10 seconds, perfect quality, 1152x864, all settings matching original footage from fraps. The problem is that from that point on the video quality becomes more and more pixelated as time passes. By the time I've rendered a full min of video, the pixelation is atrocious. What could be causing the loss in quality? It's all one clip, all the same settings. Thanks for your help.

stormrager · 06-21-2007, 03:10 PM

Could you give us something to see so that we know exactly what is happening?

Xxantcha · 06-21-2007, 06:16 PM

yeah, I'm at work now, but I'll post it up when i get home.

Thiras · 06-22-2007, 11:56 PM

This certainly sounds like something new.. oO

I'll be downloading that clip :>

Xxantcha · 06-23-2007, 01:35 AM

http://files.filefront.com/Untitleda.../fileinfo.html

Here's the video, either for stream or dl. Good luck, and thanks for checking it out.

Btcc22 · 06-23-2007, 02:21 AM

I can't see any problems with it...

Xxantcha · 06-23-2007, 03:39 AM

a prob with my computer?

i can watch other videos just fine....

zap · 06-23-2007, 05:29 AM

There's definitely something wrong with this video. It almost looks like you applied a mosaic effect to it at the end.

Post up a ss of your render settings. I think it's just a simple fix but I need to see your settings to be sure.

stormrager · 06-23-2007, 06:51 AM

After Closely Inspecting the settings you are using it seem to me like you are using VBR variable bitrate which is causing the pixilation.

Try using CBR two-pass and constant bitrate first.

If that does not work then ditch the WM3 codec that you are using to render it out to an avi.
Use the Divx Codec. It is much better and will probably solve the problems you are having.

Xxantcha · 06-24-2007, 07:58 AM

finally said screw it and used the xvid encoder, works like a charm, thanks for the guide thiras!

06-21-2007, 07:43 AM	#1
Xxantcha Initiate Join Date: Jun 2007 Posts: 5	Vegas 7 Two Pass VBR rendering deteriorates over time The video I'm rendering starts out perfect for the first 10 seconds, perfect quality, 1152x864, all settings matching original footage from fraps. The problem is that from that point on the video quality becomes more and more pixelated as time passes. By the time I've rendered a full min of video, the pixelation is atrocious. What could be causing the loss in quality? It's all one clip, all the same settings. Thanks for your help.

06-23-2007, 02:21 AM	#6
Btcc22 Hall of Fame member Join Date: Jan 2006 Posts: 175	I can't see any problems with it... __________________ //Chaosvex

06-23-2007, 06:51 AM	#9
stormrager Senior Member Join Date: Oct 2006 Posts: 156	After Closely Inspecting the settings you are using it seem to me like you are using VBR variable bitrate which is causing the pixilation. Try using CBR two-pass and constant bitrate first. If that does not work then ditch the WM3 codec that you are using to render it out to an avi. Use the Divx Codec. It is much better and will probably solve the problems you are having. Last edited by stormrager : 06-23-2007 at 06:59 AM.

06-21-2007, 03:10 PM	#2
stormrager Senior Member Join Date: Oct 2006 Posts: 156	Could you give us something to see so that we know exactly what is happening?

06-21-2007, 06:16 PM	#3
Xxantcha Initiate Join Date: Jun 2007 Posts: 5	yeah, I'm at work now, but I'll post it up when i get home.

06-22-2007, 11:56 PM	#4
Thiras Senior Member Join Date: May 2005 Posts: 528	This certainly sounds like something new.. oO I'll be downloading that clip :>

06-23-2007, 01:35 AM	#5
Xxantcha Initiate Join Date: Jun 2007 Posts: 5	http://files.filefront.com/Untitleda.../fileinfo.html Here's the video, either for stream or dl. Good luck, and thanks for checking it out.

06-23-2007, 03:39 AM	#7
Xxantcha Initiate Join Date: Jun 2007 Posts: 5	a prob with my computer? i can watch other videos just fine....

06-23-2007, 05:29 AM	#8
zap Initiate Join Date: Oct 2006 Posts: 11	There's definitely something wrong with this video. It almost looks like you applied a mosaic effect to it at the end. Post up a ss of your render settings. I think it's just a simple fix but I need to see your settings to be sure.

06-24-2007, 07:58 AM	#10
Xxantcha Initiate Join Date: Jun 2007 Posts: 5	finally said screw it and used the xvid encoder, works like a charm, thanks for the guide thiras!