I don't have much first-hand experience with Blu-rays, but I wonder if this kind of bad compression is a common thing? Fortunately it's not too common, but it'

I don't have much first-hand experience with Blu-rays, but I wonder if this kind of bad compression is a common thing? Fortunately it's not too common, but it's more common than one would like. This isn't unique to Blu-rays either; it happened a lot with DVDs. Various problems that I've seen are: 1. Improperly done telecine (e.g. telecining two different parts of the frame at different rates, more common in animation). 2. Badly done framerate-changing (Robot Chicken DVDs). 3. Completely borked interlacing (Family Guy first season DVDs). 4. Bad encoders that can't deal with massive bitrate peaks well (Suzumiya Haruhi no Yuutsu R1 DVDs, see http://i43.tinypic.com/105b8rk.png http://i43.tinypic.com/105b8rk.png). The primary problem with Blu-rays is a lack of source quality, not these kinds of mistakes: a lot of Blu-rays simply don't have any detail beyond SD because their source material is horrible (examples: Cowboy Bebop: The Movie, Close Encounters of the Third Kind).