Quantcast KVCD: Colorspace Issues - digitalFAQ.com Forums [Archives]
  #1  
09-11-2003, 07:22 AM
holgerschlegel holgerschlegel is offline
Free Member
 
Join Date: Aug 2002
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
Hi,

what is the best colorspace to use (for quallity) for processing and encoding a captured film or dvd rips to mpeg? Can colorspace conversions in avisynth script cause bad quallity in the output?

Holger
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Site Staff / Ad Manager
 
Join Date: Dec 2002
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
09-11-2003, 07:39 AM
Dialhot Dialhot is offline
Free Member
 
Join Date: May 2003
Posts: 10,463
Thanks: 0
Thanked 0 Times in 0 Posts
You loose something at each colorspace conversion. So the best is to avoid _all_ conversion and work in the colorspace provided by your codec.

Now if you can configure a codec to provide the colorspace you want, the best choice is YV12 (usable only with AVS2.5x) and secondly YUY2.
Reply With Quote
  #3  
09-11-2003, 07:50 AM
holgerschlegel holgerschlegel is offline
Free Member
 
Join Date: Aug 2002
Posts: 41
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks, and more questions...

I use the picvideo mjpeg codec to capture from tv. The capture settings in VirtualDub is set to YUY2, so the reading the avi file with AviSynths AVISource command results in a movie in YUY2 colorspace, right?
Is there any way to let avisynth display a clips current colorspace?
Is there any need to convert to YV12 if I want to encode the movie as mpeg-2 for cdr or dvd target? Maybe some of the filters used in the optimal script for avisynth 2.5.2.

Holger
Reply With Quote
  #4  
09-11-2003, 08:08 AM
incredible incredible is offline
Free Member
 
Join Date: May 2003
Location: Germany
Posts: 3,189
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via ICQ to incredible
I think these lines wil output you the data you need:

AviSource("xxxxxxx.avi")
Info()
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Erro!!! Blind PP: Work in YV12 colorspace. Ajuda! Petso Conversão e Codificação de Vídeo (Português) 3 05-30-2004 11:32 PM
BLOCKBUSTER E BLINDPP COLORSPACE YV12 ncarlo Conversão e Codificação de Vídeo (Português) 3 12-17-2003 06:49 PM
Script Error - Blind PP: Work in YV12 colorspace? beany101uk Avisynth Scripting 13 12-15-2003 01:53 PM
Best order for deinterlace and colorspace conversion? holgerschlegel Video Encoding and Conversion 1 09-15-2003 03:26 PM
KVCD: what is the TV Colorspace? dredj Video Encoding and Conversion 0 07-10-2003 12:26 PM

Thread Tools



 
All times are GMT -5. The time now is 01:06 PM  —  vBulletin © Jelsoft Enterprises Ltd