A question about color space conversion

Hi Zikun, Perhaps you can check out VIP user guide doc to lookout for potential answer • https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/archives/ug-vip-16.0.pdf There are few things that I think you can try out • Have you validate your “colour space converter” IP setting is correct ? Some of the important parameter setting to watchout like unsigned data type, guard bands and color mode conversion • Have you bypass your Quartus design to ensure your GPU can display correct color format to your monitor correctly ? • You may also want to try reduce your GPU video resolution • Another thing is have you check your Quartus design compilation timequest report to ensure there is no timing failure in your design ? • Finally, you may also want to try out other color mode conversion instead of grayscale to see if it work ? Thanks. Regards, dlim