>>7048729Well first MP4 to MP4 is like jpeg to jpeg, the compretion gets stacked and makes it look worse, shit goes in shit comes out.
But I've never seen a problem like that. Worse scenario might be that their is something wrong with the computer but that is the worse scenario.
I'd recommend starting a new project and importing some new footage, then see how far you get with the new footage before it starts looking funky and hopefully you can identify the problem.