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Codec: avc1.420816

87.33% Encoder Support
1,877,271 of 2,149,661 sessions supported encoding
99.8% Decoder Support
2,094,376 of 2,098,508 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 2,149,661 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 867,004 / 867,624 99.82% 100,013 / 100,195 — 99.51% 646,738 / 649,936 98.0% 43,065 / 43,945
SafariSafari
 — 1.54% 740 / 48,185 1.8% 3,938 / 218,744 — —
EdgeEdge
 100.0% 144,044 / 144,051 99.93% 1,528 / 1,529 — 99.86% 4,275 / 4,281 99.14% 688 / 694
FirefoxFirefox
 96.02% 51,354 / 53,481 99.96% 7,522 / 7,525 — 0.95% 1 / 105 98.85% 5,867 / 5,935

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,508 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,964 / 845,172 99.81% 96,380 / 96,559 — 99.65% 637,608 / 639,866 98.29% 42,001 / 42,730
SafariSafari
 — 99.84% 46,704 / 46,778 99.97% 213,005 / 213,060 — —
EdgeEdge
 100.0% 140,143 / 140,150 100.0% 1,488 / 1,488 — 100.0% 4,198 / 4,198 99.42% 684 / 688
FirefoxFirefox
 99.96% 51,680 / 51,701 99.95% 7,287 / 7,291 — 1.03% 1 / 97 98.49% 5,610 / 5,696