Many-pins & still-simple IC, how to prototype with it?
The usual way of breadboarding with this sort of part, other than simply completing a design and building it is to start with an evaluation board. 

This can also serve as an example of how to apply the part since the manufacturer is usually motivated to show off the part in a good light, so it will be surrounded by the required parts and deployed in such a way to allow it to perform at close to datasheet numbers. There will also be a PCB layout and you can learn from the specifications of that (number of layers, ground and power planes used etc.). 

For more complex chips they may supply software that will allow you to change registers etc. without coding. 

In this case, the evaluation board is the TVP5146EVM, and it costs $450 or so, with free (U.S.) shipping direct from TI. The BOM includes more than 150 parts, so this seems like a decent price to me if you have a serious application. I don't see Gerbers for the board, but the software and schematic are provided. It does require a PC with a parallel printer port since there is no micro on the EVM. 

The final sentence in the above paragraph should give you some pause- this part is more than 13 years old, which is fairly long in the tooth for a video part.