How to do frame rate conversion?

The simplest way to do a frame rate conversion with VIP is to use the frame buffer in tripple buffer mode with frame repeat/dropping enabled.

When scaling from 1080p60 to 720p60, you don't actually need to do a frame rate conversion assuming the input and output frame rates are locked to each other. For example, you can use a PLL to divide down the 148.5 MHz clock to 74.25 MHz which you can feed to the clocked video output.

One thing to look out for is that the frame rates really are the same. For example, 720x480p with a 27 MHz clock is actually 59.94 frames a second, not 60.