Read the documentation, I can not chew your food and feed it into your mouth, you asked for info which I provided, take your time and read the documentation or designed one yourself if you are not happy with it.
Alternative, you can find a company who makes those, pay 4-5000 dollars and then you can ask all questions you want.
i hv worked on a video based project their we were using encoders and decoders from texas instrument , a ram is used to store video data provides buffering .
all this is around fpga ,is it possible to replace encoder as well decoder using vhdl in fpga.
I think he is looking for Mpeg or another similar IP .But becuse he is not even able to define what he needs >even if he had it .He won't be able to use .By the way those IPs are very expensive.