I did everything . Move the pin, grounded. Grounded parking break wire as well. I only grounded to wire harness. Didn't make extra ground. Is this my problem. I have audio, but no video when moving or when I was still with e brake on. Help please

If you've done it correctly, it WILL work 100%.

Double check all your connections, make sure the mute wire pin you moved is seated correctly and is in the proper pin position, and make sure the radio's ground wire, the parking brake wire, and the relocated mute wire are grounded properly. If this requires grounding them to a screw/bolt on the chassis, so be it. That is usually a better ground than the one on the factory radio harness anyway.