MPEG-4/H.264 video format
- OTHERCommonly used video compression format.
Chrome
- 4 - 118: Supported
- 119: Supported
- 120 - 122: Supported
Edge
- 12 - 118: Supported
- 119: Supported
Safari
- 3.1: Not supported
- 3.2 - 17.0: Supported
- 17.1: Supported
- 17.2 - TP: Supported
Firefox
- 2 - 20: Not supported
- 21 - 34: Partial support
- 35 - 119: Supported
- 120: Supported
- 121 - 123: Supported
Opera
- 9 - 24: Not supported
- 25 - 103: Supported
- 104: Supported
IE
- 5.5 - 8: Not supported
- 9 - 10: Supported
- 11: Supported
Chrome for Android
- 119: Supported
Safari on iOS
- 3.2 - 17.0: Supported
- 17.1: Supported
- 17.2: Supported
Samsung Internet
- 4 - 22: Supported
- 23: Supported
Opera Mini
- all: Not supported
Opera Mobile
- 10: Not supported
- 11 - 12.1: Supported
- 73: Supported
UC Browser for Android
- 15.5: Supported
Android Browser
- 2.1 - 2.2: Partial support
- 2.3: Partial support
- 3 - 4.3: Partial support
- 4.4 - 4.4.4: Supported
- 119: Supported
Firefox for Android
- 119: Partial support
QQ Browser
- 13.1: Supported
Baidu Browser
- 13.18: Supported
KaiOS Browser
- 2.5: Supported
- 3: Supported
Firefox supports H.264 on Windows 7 and later since version 21. Firefox supports H.264 on Linux since version 26 if the appropriate gstreamer plug-ins are installed.
Partial support for older Firefox versions refers to the lack of support in OS X & some non-Android Linux platforms.