Hi, You can try libyuv library to convert colorspaces. It is really faster than swscale from our tests.
Yurii сб, 17 июля 2021 г. в 15:24, Nuno Santos <[email protected]>: > Nicolas, > > Thanks for your reply. > > The referred measures are based on: > > - Intel i5 2.4 Ghz quad core (desktop) > - 2018 iPad Pro 12’9 (A12X processor) > > Regards, > > Nuno > > > On 17 Jul 2021, at 12:49, Nicolas George <[email protected]> wrote: > > > > Nuno Santos (12021-07-17): > >> I’m using libav to mux a video file at full hd. > >> > >> At some point I need to convert the original frame at 1920x1080 RGB to > YUV420P > >> > >> This requires sws_scale to be called. On desktop it takes around 7/8 ms > to convert a frame. On iOS it takes 28 ms. > >> > >> I guess sws_scale is not optimised for iOS. How is people doing it on > iOS then? > > > > I do not think that sws_scale requires OS-specific optimizations. > > > > What are the CPUs of your desktop and mobile devices? > > > > Regards, > > > > -- > > Nicolas George > > _______________________________________________ > > Libav-user mailing list > > [email protected] > > https://ffmpeg.org/mailman/listinfo/libav-user > > > > To unsubscribe, visit link above, or email > > [email protected] with subject "unsubscribe". > > _______________________________________________ > Libav-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/libav-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". >
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