>> Also, why is the twist from AV_PIX_FMT_RGBA to NV_ENC_BUFFER_FORMAT_ABGR >> necessary? >> >> The nvenc header describes it as "8 bit Packed A8B8G8R8", so did they >> mess it up? > > It is necessary in order to make it work. The twist here is intentional > as I pointed out earlier. If you do it the other way around as described > in the documentation then you get false and missing colours.
Carl already pointed you to the correct, native-endian pixel formats, which match with the nvenc documentation: https://github.com/FFmpeg/FFmpeg/blob/master/libavutil/pixfmt.h#L320 > I'd like to keep in the transparency channel unless you know there is an > actual problem with it. The encoder may not use it, but it is no reason > not to pass it on. Otherwise will RGBA/BGRA have to be converted into > RGB0/BGR0 and you will again get a performance penalty. NVENC itself lists the alpha channel. So keeping it should be fine and save a conversion. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
