Am 29.08.2019 um 03:34 schrieb Fu, Linjie <[email protected]>:
>> -----Original Message----- >> From: ffmpeg-devel [mailto:[email protected]] On Behalf >> Of Carl Eugen Hoyos >> Sent: Thursday, August 29, 2019 05:17 >> To: FFmpeg development discussions and patches <ffmpeg- >> [email protected]> >> Subject: Re: [FFmpeg-devel] [PATCH 1/2] lavu/pixfmt: add AYUV pixel format >> >>>> Am Mi., 28. Aug. 2019 um 09:34 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 14:51 >>>> To: FFmpeg development discussions and patches <ffmpeg- >>>> [email protected]> >>>> Subject: Re: [FFmpeg-devel] [PATCH 1/2] lavu/pixfmt: add AYUV pixel >> format >>>> >>>> >>>> >>>>> Am 28.08.2019 um 08:22 schrieb Linjie Fu <[email protected]>: >>>>> >>>>> Add support for packed 4:4:4 pixel format AYUV. >>>>> >>>>> It is the format that VAAPI/QSV uses when coping with 4:4:4 >>>>> surfaces. >>>> >>>>> Alpha channel will be set to default value for HEVC REXT >>>>> hw decode. >>>> >>>> What is the „default value“? >>> >>> Default zero. (and it should be 255 for display) >> >> If this is not a bug in the driver, there is no alpha channel that can be >> used. >> Rename it to 0YUV and remove the alpha usage. > > From the pixel format level, adding AYUV format is for a more > fundamental/common usage. Yes, but the new pixel format will only be accepted if it is needed for hardware compatibility. If the hardware only supports 0YUV, it cannot be used to argue in favour of a new AYUV format. 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".
