I would like to create a series of 30 second product videos to tweet on Twitter.

I have been experimenting with the good old faithful Movie Maker.

I am, however seeing a degradation of video once it is uploaded and playing on twitter.

I presume there must be a optimum specification that one could use, but I am having difficulty finding the spec online.

Has anyone already created this particular "wheel" if so would you mind sharing the specifications of the video