The highest setting I can embed it at is 1280x720. The actual video is so much better.
Except for the dirty windsheild. HD picks up everything. I can even read the license plates as a car goes by better than other cameras.
With the snapshot feature you can grab a frame as a jpg and zoom in.
VC-127HD Dash Cam Day Driving
Night Driving with the VC-127HD Dash Cam. Set YouTube Player on highest settings.