I am using Kc705 + HDMI IO FMC card ... i can establish a video through the FPGA, filtering the video streaming and the video is seen on my screen.
However, with specific filter constant, the video get static (picture) for a while ... The hblank and vblank are passed through the FPGA, the only informations that are changing are Video data (no Audio information) .... Even if data are wrong, i was expected to see something on my screen, not a static picture.
Is there any engine inside the ADV7511 that i didn't see which may block the video to a specific status (based on Video data clipping registers for instance)?