View Single Post
Old 14th August 2013, 01:37   #3  |  Link
raffriff42
Retried Guesser
 
raffriff42's Avatar
 
Join Date: Jun 2012
Posts: 1,373
BT.601 and BT.709 compatibility benchmark
Quote:
Regarding the flags, "Transfer characteristics" did not have an effect on any player. "Matrix coefficients" was the one that mattered in proper BT.601/BT.709 reproduction..."Color primaries" had an effect only on Quick Time...
See also:
Color coefficients and Colormatrix usage summary
Quote:
every HDTV I have ever heard of uses Rec 709 primaries
So my working rule is that as far as players are concerned, Matrix Coefficients matter, Primaries and Transfer Characteristics don't (except as noted above) - but set them all anyway when encoding, as required by the spec.

EDIT (to answer your question) I think the settings get mismatched when the encoder fails to explicitly set all three parameters, leaving those not set to either their previous or default values.

Last edited by raffriff42; 14th August 2013 at 02:48.
raffriff42 is offline   Reply With Quote