Comment Re:Sounds like bad methology (Score 1) 78
The only reason that the codec would influence the outcome is if it would generate artifacts that are somehow informative of the direction of time. In practice, codecs aim to keep as much information as possible while reducing the required space by finding regularities in the video. If the quality is sufficiently high, there would be next to no artifacts. Only in cases where the quality is extremely low there are tell-tale signs of the direction of time. Everyone has seen damaged Xvid movies I assume.