Automatically select BT.601/BT.709 according to color matrix coefficients flag

[GoogleCodeExporter]

Manually setting is not convenient if switching between SD and HD videos.

If not, at least automatically choose BT.601/BT.709 according to video's 
resolution. For video clip's width > 1024 || height > 576 use BT.709, and for 
width <= 1024 && height <=576 use BT.601.

Original issue reported on code.google.com by astrat...@gmail.com on 31 Oct 2011 at 6:13

[GoogleCodeExporter]

Original comment by YuZhuoHu...@gmail.com on 31 Oct 2011 at 11:23

• Changed state: Accepted
• Added labels: Priority-Low, Type-Enhancement
• Removed labels: Priority-Medium, Type-Defect

[GoogleCodeExporter]

I believe he has it this way for compatibility with VSFilter 2.39/2.40, since 
both are only capable of using the BT.601 matrix? And as far as I know, this 
only affects the matrix coefficients of the subtitles only?

I like the idea of having automated switching added, but there would still need 
to be a manual override, so any color matching done with BT.601 in mind on a HD 
video using something like Aegisub wouldn't get messed up.

Original comment by cyber.sp...@gmail.com on 1 Nov 2011 at 1:13

[GoogleCodeExporter]

Original comment by cyber.sp...@gmail.com on 19 Dec 2011 at 12:58

• Changed state: Started

[GoogleCodeExporter]

Feature added in xy_VSFilter_test_20111220

Original comment by cyber.sp...@gmail.com on 20 Dec 2011 at 11:38

• Changed state: Verified

[GoogleCodeExporter]

wouldn't auto guess better as default?

Original comment by ved_k...@ymail.com on 22 Dec 2011 at 9:30

[GoogleCodeExporter]

Doing so would break compatibility with VSFilter 2.39/2.40 which doesn't 
support BT.709 at all. Just like before, BT.601 needs to remain the default so 
the colors in existing SSA/ASS subtitle scripts are rendered correctly.

Original comment by cyber.sp...@gmail.com on 22 Dec 2011 at 9:42