[FFmpeg-devel] [PATCH] libswscale/swscale_unscaled.c: UHD Resolution Performance Increase for Color Space Convertions / NVENC Related
Carl Eugen Hoyos
ceffmpeg at gmail.com
Mon Oct 3 14:39:57 EEST 2016
2016-10-03 13:11 GMT+02:00 Ali KIZIL <alikizil at gmail.com>:
> 2016-10-03 14:09 GMT+03:00 Carl Eugen Hoyos <ceffmpeg at gmail.com>:
>> 2016-10-03 12:48 GMT+02:00 Ali KIZIL <alikizil at gmail.com>:
>> > Yes, Alpha channel is not managed.
>> > So it should be;
>> >> + /* yuv422p10_to_yuv420p */
>> >> + if ((srcFormat == AV_PIX_FMT_YUV422P10) &&
>> >> + (dstFormat == AV_PIX_FMT_YUV420P))
>> >> + c->swscale = yuv422p10ToYuv420pWrapper;
>> (Apart from "too many parenthesis")
>> I would prefer if alpha gets handled.
> Got it. I dont have any source with alpha.
This is about conversion of frames without alpha into
frames with an alpha channel, so I don't think you need
any source with alpha.
Just set the opacity to 0xFF.
I suspect you should pay attention to the dithering for
the moment though.
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