Hi, first of all sorry for bad english language
I am on Kubuntu Precise 12.04 with last version of Kdenlive 0.9 witch was upgrading from 0.8
When i use H264 profile with thoses option :
- 720:405 or - 1280:720
I have a zoom rendoring exactly in the seam place whitch are coposite effect.
I don't non wy, i have post-it in french forum but i realy need to have a solution keekly.
That the reson i post this it with my special english :)

Thank you for your solution

I did re-installed KDENLIVE 0.9 afert delete config folder, and i have the same issue.

nobody have an idea ?
I really need to solve this issue.

Nobody could help me