Still completely lost on correct use of Colormatrix.

[mahsah]

Screenshot of DGindex info:
http://img123.imageshack.us/img123/8971/46866428fs3.png

Now, according to that, I should need.
colormatrix(mode="Rec.601->rec.709")
AFTER the IVTC, right?

But when I do that, the colors get darker, and all of the reds get a purplish hue.

I'm just completely lost about what is the correct operation here...

[J_Darnley]

Maybe, if you are using a 709 matrix to convert it back to RGB on playback. Also, the little asterisk there means that the colorimetry wasn't signalled so DGIndex shows a default. Perhaps it is wrong. If it is wrong or not then the colours will be changed anyway, you are supposed to decide if it the change is correct or not.

[mahsah]

How would I check what matrix I am using on playback in FFDshow?

[J_Darnley]

By looking at where you set it, Output -> RGB conversion page. This is only used if you are forcing RGB output in ffdshow.

[fibbingbear]

Correct me if I'm wrong, but doesn't D2Index have a "hints" option that you can turn on, and you can tell ColorMatrix "hints=true", so it automagically figures out the correct conversion?

[J_Darnley]

Will it be correct for you though? If you use MPEG2Source(info=3) then it will output hints containing the colorimetry of the frames which can be read by ColorMatrix(hints=true). But is this the correct conversion? You must still specify a destination matrix if you don't want the default Rec.601. This does take out some of the manual-ness of it. A problem then occurs if you have a video without the colorimtery specified, as with the OP's video. DGIndex just assumes a default which is then placed into the d2v and hints.

FYI, there is also the d2v option for ColorMatrix which allows the colorimetry to be read from the d2v file.