Am Mi., 28. Aug. 2019 um 09:52 Uhr schrieb Fu, Linjie <[email protected]>: > > > -----Original Message----- > > From: ffmpeg-devel [mailto:[email protected]] On Behalf > > Of Carl Eugen Hoyos > > Sent: Wednesday, August 28, 2019 14:58 > > To: FFmpeg development discussions and patches <ffmpeg- > > [email protected]> > > Subject: Re: [FFmpeg-devel] [PATCH 2/2] swscale: Add swscale and fate > > support for AYUV > > > > > > > > > Am 28.08.2019 um 08:22 schrieb Linjie Fu <[email protected]>: > > > > > > Add swscale support for AYUV and make it more robust. > > > > The path that converts from AYUV to planar YUV(A) seems to be missing the > > handling of alpha values. > > Alpha channel information in AYUV are treated in the same way for RGBA/BGRA > and > is reusing rgbaToA_c to handle the alpha values. > > When converting AYUV to YUA/YUVA, two methods are acceptable: > - For YUV, just cut the alpha and discard the transparency > - For format which also contains an alpha channel(YUV444P), copy the > alpha information seems good.
But since the input does not contain (valid) alpha, this does not apply. Carl Eugen _______________________________________________ ffmpeg-devel mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
