Please show you the circuit diagram NTSC to PAL converter?

Comparing the NTSC video standard to the PAL standard, one finds that all of

the reference video levels are different, the color frequencies and phases are

different, and the vertical and horizontal scanning frequencies are different.

Converting one to the other is not a simple little box, but quite a complex piece

of equipment. Because of its complexity, and also because this site hasn't the

ability to present graphics, it's out of the question to try and present it here.

You're far better off searching the key Words on-line.