Hey folks, I use an EOS 5 Mark3 to stream via HMDI (with Blackmagic Ultra studio recorder card) to a Macbook Air M1. But the stream is always reconnized as a poor signal (NTSC 720x486). I tried to choosed PAL and try 50i or 24p cadency, but I still can't get a great 1920x1080 stream. Please could give me any help? I spent my full day on this issue !!!