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Codec: avc1.421016
99.71% Encoder Support
319,545 of 320,476 sessions supported encoding
99.93% Decoder Support
269,273 of 269,449 sessions supported decoding
Codec Specifications
| Codec Family |
AVC (H.264) |
| Profile |
Baseline |
| Level |
2.2 |
| Maximum Resolution |
SD/DVD (720×480) |
| Maximum Bitrate |
4 Mbps |
VideoEncoder Support Matrix
Browser × Platform encoder support from 320,476 test sessions. Browser detection based on user agent strings.
| Browser |
Windows |
macOS |
iOS |
Android |
Linux |
 Chrome/Chromium |
99.84%
143,735 / 143,963
|
99.89%
19,505 / 19,526
|
— |
99.79%
63,434 / 63,565
|
98.93%
7,684 / 7,767
|
 Safari |
— |
99.94%
8,441 / 8,446
|
100.0%
31,395 / 31,396
|
— |
— |
 Edge |
99.99%
31,184 / 31,186
|
100.0%
336 / 336
|
— |
99.71%
1,035 / 1,038
|
98.18%
54 / 55
|
 Firefox |
96.11%
9,381 / 9,761
|
100.0%
1,299 / 1,299
|
— |
0.0%
0 / 43
|
98.75%
1,263 / 1,279
|
VideoDecoder Support Matrix
Browser × Platform decoder support from 269,449 test sessions. Decoder data collection started Jan 2026.
| Browser |
Windows |
macOS |
iOS |
Android |
Linux |
 Chrome/Chromium |
99.97%
121,588 / 121,623
|
99.88%
15,949 / 15,968
|
— |
99.99%
53,550 / 53,554
|
99.07%
6,516 / 6,577
|
 Safari |
— |
99.93%
7,048 / 7,053
|
100.0%
25,780 / 25,781
|
— |
— |
 Edge |
100.0%
27,119 / 27,120
|
100.0%
289 / 289
|
— |
100.0%
961 / 961
|
100.0%
47 / 47
|
 Firefox |
99.99%
7,929 / 7,930
|
100.0%
1,074 / 1,074
|
— |
0.0%
0 / 30
|
99.24%
1,039 / 1,047
|