Ok, so using the overlay filter, one can change the x/y location of a video over time by using the "t" variable. For example, overlay=x='if(gte(t,2), -w+(t-2)*20, NAN)':y=0 can be used to start ...
Can any one give me more explanation on VITC? I need to identify the VITC code presented in the VBI signal. How does it's format work? how does one extract it? How are VITC embedded in a video signal? ...