Install H264 as video codec (encoder)

Hi people,

I have just re download a wonderful screen video capture (CamStudio).

But I want compress the video into H264. (or H265 if there are already stable final/stable release ?)

I have try x264vfw.2273kMod.x86_64 the install is successful but I don't find the codec listed inside CamStudio

My systm is Windows 7 64Bit

Thx people