HTML5 Video Support by Codec

ChromeEdgeFirefoxInternet ExplorerOperaSafari
H.264
4
12
35
9
25
3.2
HEVC (H.265)
No
No *
No
11
No
11
AV1
70
75
67
No
57
No
VP8 (WebM)
25
14
4
9
16
12.1
VP9 (WebM)
29
14
28
No
10.6
14.1
Ogg Theora
3
Yes
3.5
No
10.5
No

For a more detailed writeup of the various codecs and their browser support, we highly suggest Mozilla's excellent documentation.

* Legacy Edge supported HEVC. Modern (Chromium) Edge does not.