After implementing HVF custom mode, with variable VSYNC timing, and fixed HSYNC timing, we are having an issue with dropped frames. When raw frames are input with a delay in between, we get all of the output encoded frames without any errors. When the frames are input faster, the ADV seems to stop outputting frames. Is this possible? Does the ADV have some mechanism perhaps due to overflow or something else which might cause it to stop outputting encoded frames? Is there some indication or register with information about what is occurring?