Can you edit replay's match frames. Can you add some more or take off. I have useless frames in my replays and it would be fun to edit them a lil bit.

Indeed you can. Open the replay in a text editor & find a line similar to this:

NEWGAME 0;1000 10 0 0 0 2 140 0 0 classic 0 0 100 0 0 0 1 0 2 0 0 0 0 0 0 0.000000

(it's near the top)

The bits to change for frames are:

NEWGAME 0;1000 10 0 0 0 2 140 0 0 classic 0 0 100 0 0 0 1 0 2 0 0 0 0 0 0 0.000000

^ Match frames

NEWGAME 0;1000 10 0 0 0 2 140 0 0 classic 0 0 100 0 0 0 1 0 2 0 0 0 0 0 0 0.000000

^ Turn frames