Hi.
> Please take into account that your YUV data may actually be YCbCr, the > format is the same, but the scaling differs. With YCbCr the values > range from 16-235 (analog standard) instead of the standard 0-255 > range in the world of computers. > Thanks for the information - I heard about this diffrence, but never thought it could have such symptoms. > > If you are certain you are converting from/to the correct format, then > you probably found a bug, but it is more likely that you are doing the > wrong conversion, since the symptoms you describe fit a situation > where you would have YCbCr data and interpret it as if it was YUV data > on a 0-255 scale. My source YUV is 4:2:0, and that what I presume FFMPEG uses as well? I'm not converting it anywhere - just pass straight to encoder. By the way, when I did converted using img_convert from RGB to YUV, I got same results. Any idea what the destination format should be for MPEG4? Regards. _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
