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Codec: avc1.420432
85.44% Encoder Support
53,542 of 62,667 sessions supported encoding
99.95% Decoder Support
11,851 of 11,857 sessions supported decoding
Codec Specifications
| Codec Family |
AVC (H.264) |
| Profile |
Baseline |
| Level |
5 |
| Maximum Resolution |
4K (4096×2176) |
| Maximum Bitrate |
135 Mbps |
VideoEncoder Support Matrix
Browser × Platform encoder support from 62,667 test sessions. Browser detection based on user agent strings.
| Browser |
Windows |
macOS |
iOS |
Android |
Linux |
 Chrome/Chromium |
99.74%
27,737 / 27,810
|
100.0%
4,346 / 4,346
|
— |
99.73%
11,991 / 12,023
|
99.16%
1,529 / 1,542
|
 Safari |
— |
2.26%
35 / 1,547
|
1.77%
125 / 7,049
|
— |
— |
 Edge |
99.98%
5,000 / 5,001
|
98.04%
50 / 51
|
— |
100.0%
100 / 100
|
100.0%
14 / 14
|
 Firefox |
94.9%
1,989 / 2,096
|
100.0%
303 / 303
|
— |
0.0%
0 / 11
|
98.97%
288 / 291
|
VideoDecoder Support Matrix
Browser × Platform decoder support from 11,857 test sessions. Decoder data collection started Jan 2026.