How to change the video input rate to the ADV202/212

The encode parameter STALLPAR can be used to decrease the input field rate to be encoded, so that only every 2nd, 3rd or 4th etc field is encoded.

The STALLPAR can be programmed prior to starting the encoding process or can be changed during the encode process.

It is also possible to use the STALLPAR to halt encoding momentarily in setting STALLPAR to its maximum value of 0xFF and back to 0x00 to start encoding again.