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Codec: avc1.42042a

87.32% Encoder Support
1,876,635 of 2,149,168 sessions supported encoding
99.8% Decoder Support
2,093,719 of 2,097,862 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,168 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 866,953 / 867,536 99.81% 99,990 / 100,185 — 99.5% 646,416 / 649,659 98.03% 42,921 / 43,785
SafariSafari
 — 1.56% 754 / 48,396 1.87% 4,094 / 218,684 — —
EdgeEdge
 99.99% 143,739 / 143,750 100.0% 1,530 / 1,530 — 99.82% 4,348 / 4,356 98.64% 652 / 661
FirefoxFirefox
 95.79% 51,228 / 53,478 99.97% 7,559 / 7,561 — 0.0% 0 / 105 98.63% 5,972 / 6,055

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,862 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,568 / 844,757 99.8% 96,368 / 96,562 — 99.64% 637,466 / 639,747 98.3% 41,885 / 42,609
SafariSafari
 — 99.82% 46,953 / 47,038 99.98% 213,015 / 213,065 — —
EdgeEdge
 99.99% 139,788 / 139,799 100.0% 1,487 / 1,487 — 100.0% 4,276 / 4,276 98.93% 647 / 654
FirefoxFirefox
 99.96% 51,554 / 51,574 99.95% 7,326 / 7,330 — 0.0% 0 / 92 98.47% 5,741 / 5,830