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Codec: avc1.420c29

87.17% Encoder Support
280,002 of 321,230 sessions supported encoding
99.94% Decoder Support
269,897 of 270,064 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4.1
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,230 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.83% 143,834 / 144,077 99.91% 19,882 / 19,899 — 99.79% 63,588 / 63,725 99.02% 7,704 / 7,780
SafariSafari
 — 1.86% 163 / 8,782 1.48% 467 / 31,471 — —
EdgeEdge
 100.0% 30,944 / 30,945 100.0% 342 / 342 — 99.68% 926 / 929 100.0% 61 / 61
FirefoxFirefox
 95.9% 9,368 / 9,768 100.0% 1,323 / 1,323 — 0.0% 0 / 37 99.16% 1,299 / 1,310

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,064 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,656 / 121,693 99.91% 16,188 / 16,203 — 99.98% 53,725 / 53,734 99.16% 6,488 / 6,543
SafariSafari
 — 99.9% 7,346 / 7,353 99.99% 25,796 / 25,799 — —
EdgeEdge
 100.0% 26,971 / 26,972 100.0% 303 / 303 — 100.0% 843 / 843 100.0% 57 / 57
FirefoxFirefox
 100.0% 7,976 / 7,976 100.0% 1,108 / 1,108 — 0.0% 0 / 23 99.72% 1,079 / 1,082