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Codec: avc1.420c0a

3.36% Encoder Support
72,278 of 2,150,366 sessions supported encoding
99.8% Decoder Support
2,094,722 of 2,098,845 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 64 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,150,366 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 252 / 868,319 0.17% 172 / 100,446 — 0.3% 1,970 / 650,194 0.94% 413 / 43,914
SafariSafari
 — 1.48% 713 / 48,072 1.81% 3,948 / 218,607 — —
EdgeEdge
 0.02% 35 / 143,926 0.07% 1 / 1,451 — 0.0% 0 / 4,273 0.14% 1 / 690
FirefoxFirefox
 95.96% 51,248 / 53,404 99.85% 7,431 / 7,442 — 0.0% 0 / 107 97.84% 5,920 / 6,051

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,845 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,405 / 845,585 99.8% 96,504 / 96,702 — 99.65% 637,964 / 640,214 98.31% 41,986 / 42,709
SafariSafari
 — 99.82% 46,571 / 46,655 99.97% 212,879 / 212,938 — —
EdgeEdge
 99.99% 139,976 / 139,983 100.0% 1,404 / 1,404 — 100.0% 4,194 / 4,194 99.56% 681 / 684
FirefoxFirefox
 99.95% 51,596 / 51,621 99.94% 7,205 / 7,209 — 0.0% 0 / 100 98.57% 5,711 / 5,794