It it my understanding that ippiYUV420ToRGB_8u_P3C3R and ippiYUV422ToRGB_8u_P3C3R methods assume MPEG color space (e.g. convert from what is an equivalent of FFmpeg's AV_PIX_FMT_YUV420P/AV_PIX_FMT_YUV422P).
Is there a set of functions that'd convert from input in JPEG color space (e.g. from what FFmpeg refers to as AV_PIX_FMT_YUVJ420P/AV_PIX_FMT_YUVJ422P)? If not, is that something that could be considered for future versions?
All the IPP Image Color Conversion support APIs list in here.
If there is no function that you expect, please raise your feature request thought https://supporttickets.intel.com/servicecenter?lang=en-US
We will take your request into our develop plan log.