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Codec: avc1.420032

99.63% Encoder Support
2,139,153 of 2,147,081 sessions supported encoding
99.8% Decoder Support
2,091,676 of 2,095,791 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 2,147,081 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 866,697 / 867,314 99.82% 100,367 / 100,545 — 99.5% 644,990 / 648,218 98.02% 42,991 / 43,858
SafariSafari
 — 99.72% 48,030 / 48,164 99.98% 218,410 / 218,454 — —
EdgeEdge
 100.0% 143,638 / 143,645 100.0% 1,451 / 1,451 — 99.78% 4,156 / 4,165 99.12% 676 / 682
FirefoxFirefox
 95.82% 51,295 / 53,531 99.96% 7,477 / 7,480 — 1.68% 2 / 119 98.75% 5,920 / 5,995

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,095,791 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,601 / 844,785 99.82% 96,668 / 96,845 — 99.64% 635,931 / 638,210 98.32% 41,877 / 42,593
SafariSafari
 — 99.8% 46,702 / 46,794 99.98% 212,802 / 212,847 — —
EdgeEdge
 100.0% 139,613 / 139,619 100.0% 1,415 / 1,415 — 100.0% 4,095 / 4,095 99.26% 674 / 679
FirefoxFirefox
 99.97% 51,693 / 51,709 99.93% 7,259 / 7,264 — 1.82% 2 / 110 98.54% 5,678 / 5,762