How to split x264 encoded video into segments?

[mynewusername]

Hi,

First off, this is my first post on the forums. So hello everyone. I have been a long time reader but until now I have always been able to find answers to my questions without needing to start a new thread.

Here is my problem:

I have unsuccessfully been trying to split some video files I encoded with x264 into individual segments. I want to end up with a video segment for each keyframe where each segment is independent of other segments.
(I.e. if the video file has 300 keyframes in it I want 300 segments.)

Since I have not been able to achieve this so I figured I would ask on the forum. The files are going to be distributed over the internet and splitting them up like this makes distribution easier for my project.

Can anyone point me towards something that can help me with this? It doesn't necessarily have to be a splitting method. If it is possible to directly encode the segments split up already then I wouldn't be opposed to re-encoding them. I actually tried encoding the segments separately to begin with, but I kept getting overlap at the cuts.

Thanks =)

edit:
The final video needs to be in an mp4 container, so it would be best if someone knows a tool that can do this with a mp4 container directly