Le nonidi 29 nivôse, an CCXXIII, Hendrik Leppkes a écrit : > nvenc should behave the same as libx264, or any other video encoder, if > this patch makes it do that, then it should be applied. > > If bt601 needs special handling not yet present in avcodec, it should be > implemented in such a way that all encoders can benefit from it.
That was one of the points I was trying to make, thanks for explaining it more clearly. Two additional points: According to Philip's tests, nvenc adds a 45/44 = 720/704 factor, not 720/702 = 40/39, so it does not conform to BT.601 anyway. I have downloaded BT.601 from <URL: http://www.itu.int/rec/R-REC-BT.601/ >, both the most recent and the oldest versions, and I did not find any explicit reference of this 702 business, nor could I decipher indirect references, so I still wonder where it comes from exactly. (I had previously assumed it would be insanely expensive like the MPEG standards, but it is free and short. On the other hand, I do not expect people who do not bother to properly configure their character encodings to produce good standards.) Regards, -- Nicolas George
signature.asc
Description: Digital signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
