I encountered this issue with premiere where a couple of my video clips in a longer sequence render out jittery. It doesn't look this way in the preview window.
It begins at 1:10 and goes on until 1:42
There are two clips that I used in this sequence, the one of the man talking at the podium is an mp4 at 1280 x 720 with an fps of 59.94. I'm not sure what its compressed at. The second clip of the firefighter and the teacher are both from the same video--they are also 1280x720 and the fps is 23.976 its compressed with h264.
The rest of the timeline is at 1920x1080 at 23.976fps and the videos are stretched to fit.
Does anyone know what's causing this? Any help would be greatly appreciated!