video/x-h264 constrained-baseline 1/1 12/11 10/11 16/11 40/33 44/33 64/33 160/99 18/11 15/11 24/11 60/33 20/11 32/11 80/33 1 1b 1.1 1.2 1 1b 1.1 1.2 1.3 2 2.1 2.2 3 baseline constrained-baseline main 1 1b 1.1 1.2 1.3 2 2.1 2.2 3 1 1b 1.1 1.2 1.3 2 2.1 2.2 3 3.1 1 1b 1.1 1.2 1.3 2 2.1 2.2 3 3.1 3.2 4 video/x-h264 1 1b 1.1 1.2 1.3 2 2.1 2.2 3 3.1 3.2 4 true main true true high main true true high main baseline true true