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Codec: avc1.420015
18.79% Encoder Support
11,888 of 63,268 sessions supported encoding
99.94% Decoder Support
11,951 of 11,958 sessions supported decoding
Codec Specifications
| Codec Family |
AVC (H.264) |
| Profile |
Baseline |
| Level |
2.1 |
| Maximum Resolution |
SD (512×480) |
| Maximum Bitrate |
4 Mbps |
VideoEncoder Support Matrix
Browser × Platform encoder support from 63,268 test sessions. Browser detection based on user agent strings.
| Browser |
Windows |
macOS |
iOS |
Android |
Linux |
 Chrome/Chromium |
0.02%
5 / 27,788
|
0.14%
6 / 4,368
|
— |
0.16%
20 / 12,252
|
0.89%
14 / 1,570
|
 Safari |
— |
99.88%
1,620 / 1,622
|
99.99%
7,038 / 7,039
|
— |
— |
 Edge |
0.0%
0 / 5,098
|
0.0%
0 / 64
|
— |
0.0%
0 / 119
|
0.0%
0 / 13
|
 Firefox |
94.91%
2,107 / 2,220
|
100.0%
295 / 295
|
— |
— |
98.46%
319 / 324
|
VideoDecoder Support Matrix
Browser × Platform decoder support from 11,958 test sessions. Decoder data collection started Jan 2026.