Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > Capturing and Editing Video > VirtualDub, VDubMod & AviDemux

Reply
 
Thread Tools Search this Thread Display Modes
Old 28th April 2021, 21:48   #1  |  Link
mikeiz
Registered User
 
Join Date: Apr 2009
Location: Raleigh-Durham, North Carolina
Posts: 9
VirtualDub2 4:2:2 YCbCr capture of P210-709 format colors not right

I captured the video using a Magewell Pro Capture HDMI 4K+ adapter using VirtualDub2 build 44237. The video colors look correct in Overlay mode. I capture to an AVI file setting the format to P210. When opening the file in Virtualdub2, it is detecting in the Decompression format P210-709, but the colors are not right. Any ideas on what's going on?

Last edited by mikeiz; 29th April 2021 at 00:17.
mikeiz is offline   Reply With Quote
Old 29th April 2021, 00:18   #2  |  Link
poisondeathray
Registered User
 
Join Date: Sep 2007
Posts: 5,346
How are the "colors are not right"?

You expect colors to be slightly shifted because vdub uses rec601 for the RGB conversion for it's preview by default. The actual underlying YCbCr video is not affected , unless you do something (e.g. apply a RGB filter) that actually requires a conversion to RGB

If you want to preview what it would look like for a 709 preview, add the "alias format" filter . Don't forget to disable it when actually using vdub2 for encoding
poisondeathray is offline   Reply With Quote
Old 2nd May 2021, 11:16   #3  |  Link
shekh
Registered User
 
Join Date: Mar 2015
Posts: 775
Quote:
Originally Posted by mikeiz View Post
When opening the file in Virtualdub2, it is detecting in the Decompression format P210-709
This is suspicious, the AVI output from capture never included any color properties, moreover it is never detected from capture source as well.
And the AVI decoder does not detect colorspace too. Maybe you just have the "709" preference in decode format turned on?
__________________
VirtualDub2
shekh is offline   Reply With Quote
Reply

Tags
capture, chroma format, p210, ycbcr422

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 17:59.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.