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Codec: avc1.420015
16.48% Encoder Support
52,880 of 320,853 sessions supported encoding
99.93% Decoder Support
269,338 of 269,517 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 320,853 test sessions. Browser detection based on user agent strings.
| Browser |
Windows |
macOS |
iOS |
Android |
Linux |
 Chrome/Chromium |
0.02%
36 / 144,361
|
0.17%
34 / 19,775
|
— |
0.13%
81 / 63,426
|
0.81%
62 / 7,682
|
 Safari |
— |
99.82%
8,525 / 8,540
|
99.94%
31,306 / 31,324
|
— |
— |
 Edge |
0.03%
8 / 30,925
|
0.0%
0 / 364
|
— |
0.0%
0 / 1,024
|
0.0%
0 / 67
|
 Firefox |
95.97%
9,493 / 9,892
|
100.0%
1,326 / 1,326
|
— |
0.0%
0 / 33
|
98.09%
1,283 / 1,308
|
VideoDecoder Support Matrix
Browser × Platform decoder support from 269,517 test sessions. Decoder data collection started Jan 2026.
| Browser |
Windows |
macOS |
iOS |
Android |
Linux |
 Chrome/Chromium |
99.97%
121,777 / 121,813
|
99.89%
16,069 / 16,086
|
— |
99.98%
53,431 / 53,440
|
99.11%
6,448 / 6,506
|
 Safari |
— |
99.87%
7,176 / 7,185
|
99.98%
25,676 / 25,680
|
— |
— |
 Edge |
100.0%
26,856 / 26,856
|
100.0%
309 / 309
|
— |
100.0%
940 / 940
|
98.25%
56 / 57
|
 Firefox |
100.0%
8,100 / 8,100
|
100.0%
1,088 / 1,088
|
— |
0.0%
0 / 26
|
99.52%
1,044 / 1,049
|