Same problem here... Froyo ...build 12821
Thought it could be a hdcp issue... But it's test-video shot by both the front and the back cameras of the Streak... The TV (scarlet lg7000) has 4 hdmi/hdcp ports... Tried with couple of them and tried to change the cable too...
As stated by gawarner, audio is ok... Video is distorted and fills the top 20-30% of the screen.
Plus.... If everyone knows... Would like to know if there is a way to mirror the Streak on the monitor (even if it needs the root & cook and a new dock...
), please let me know... thanks in advance.