Try watching in VLC. QuickTime is one of the worst players out there.
Just wanted to tell, that I have the exact same problem!
Made a thread about it as well, and made a bug report. It is so, so, so frustrating. For me, that is not the only glitches. I have grey backgrounds where it should be black, stuttering sequences and stuff like that.
Everything is smooth and wonderful in edit, but after encoding - in Premiere og AME, it f**ks up.
Right now i'm trying to encoding using software only to see if it fixes the problem.
Have you fixed this?
Thanks for the suggestion Jim. I watched it in VLC and it played perfectly fine. Next question, is this a proper work around? Will YouTube or Vimeo be able to render the H.264 without the glitches?
Well, the glitches are most likely a playback issue, not something wrong with the file itself. So probably, yes.