It is clear the encoder is kind of resetting its data every one second for the picture to do that. Obviously, this would only be apparent on parts of the picture that remain mostly unchanged for a few seconds. What is causing this exactly and is there a way to stop it? Also for movies already encoded, is there some sort of filter to mask this effect? I'm talking about the 264 encoding at highest quality settings with the latest version. I don't think it's a new problem but it is quite noticeable quite often when viewing on the PC at least.