Videos, with yellowing after export

[Hazzbin]

the last 2 videos I've joined together have lost their original colors and are now have a 'yellowing' look about them.
what could be the problem, I've tried to find other threads with no success

thanks

Hazz

[Andy]

I would think it is something to do with either the versions of libavformat/libavcodec on your machine or the format of your files. Have you tried rendering to a different format?

[Hazzbin]

G'day Andy
and thanks for the reply, I should of also said I'm trying Openshot in Precise Pangolin 12.04, which we also know is still in development stage......so obviously with it's problems.
I did try and update the libavformat/libavcodec whether I picked the correct ones I dont know......but still got same result.

I'll keep trying

again thanks

Hazz