What are some free good video slicers and joiners?

[Barnabas]

I started to record tennis matches with the tv tuner I recently bought.

What are some good video slicers and joiners? I want to remove the ads to leave only the tennis

And also, which format should I be using if I want to later record those matches in dvd and watch them on a dvd player?

I know the questions must be silly, but, then, I had o ask them