Inspired by the brilliant work in this thread, I did some frame-by-frame analysis of ABBs first court appearance on February 6th 2012. There are some horrible errors, some seem purposefully induced, so much so that you could call them whistleblower-mistakes, but they might be more than that.
All the below images are frames from TV2 Denmarks broadcast on February 6th.
This is the "worst" video-artifact I've found so far. It is the 5th frame in the below series. Hint: Look at ABBs head.
And here are the successive frameset "A" from another video-player (the artifact begins at frame 3 and is really bad at frame 5):
Then, towards the end of this video, some impossible frames appear (the clip has about 25 frames per second, so between each frame is approx. 1/25 of a second). This could be either a "whisleblower-mistake", or something more sinister (I'll expand on this after the images)
Do you see the problem? Maybe not, but if you see the frames in succession, you will! (This is the 4th frame in the below series "B").
This is the frame two frames prior to the one above
(the 2nd frame in the series):
Do you see it now? Hint: Look at ABB's mouth!
And this is frame two frames after
the first one (the 6th frame in the below sequence):
And the whole sequence "B":
For a brief moment towards the end of the broadcast, ABB's mouth changes to a perfectly straight line, that changes width every time theres a camera-flash! and this change happens within 1/25th of a second! It goes from unnaturally wide to very narrow and back again, all within less than 1/5 of a second. This is not possible.
Here is a frame of what his mouth is "supposed" to look like (Frame 12 of frameset "B"):
If you examine the footage carefully, you will notice that ABB also changes facial expression briefly during these flashes. The alternative purpose of inducing this error (other than whisleblowing) could be to implant subliminal expressions during the brief moment of "flashes". The subliminal effect of these "flash-frame-poses" are unknown to me, but they seem to have been deliberately added and are very different from the expressions right before and right after the "camera-flash". Again, you really have to watch the frames in slow succession. Maybe someone could make a gif from frameset "B" at about 1 frame per second?
Edit: The full video is available at http://nyhederne.tv2.dk/article.php/id-47993074:p%C3%A5r%C3%B8rende-grinede-af-breivik.html
(it features 3 almost identical clips of ABB entering court, the first one is the longest and the only one to contain frameset "B").