VTX telemetry issue

Hii team

I’m experiencing issues with video telemetry. We’ve developed our own flight controller based on PX4, and everything is working fine in terms of flight in all modes. However, we’re facing problems with video telemetry. When we display data on the OSD (On-Screen Display) video feed, it shows errors, noise, or font issues, such as “VVVVVVVV” appearing on the video. We’ve tried various combinations but can’t resolve the issue.

My fc is on H743

osd chip at7456

params- https://drive.google.com/file/d/1H5I3jCm0dQxDKU_doru7sCyFBbj2lZDe/view?usp=sharing

osd chip is AT7456