When jumping through (intra) keyframes, the picture it displays is not on the correct time. So when I would place the marker there then it is on a other place in the movie. I always need to press 2 times play and then 1 keyframe back to see the actual keyframe where the marker will be placed!
When hitting keyframe jump more then a few times it visually jumps to far and can only be corrected playing/pausing the movie.
codec 4CC: H.264 1280 x 720 29.970fps
You are probably using 2.5.x and did not notice the dialog :'H264 detected, seeking will be inacurate' ?
Try with 2.6