I failed to convert it into Lagarith or something similiar.

But AE accepted it plain, so I worked on it but in the timeline and so in the Final Render, the video is screwed up.
Not by quality, but synch. Clips change place and repeat themselves randomly, every second of video (Unedited) there is a repetition of the same two/three times.

How can I avoid this problem? Any idea?
Amateur editing video is so fucked up with these formats.
