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Codec: avc1.420c29

85.16% Encoder Support
53,620 of 62,967 sessions supported encoding
99.93% Decoder Support
11,817 of 11,825 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 62,967 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.8% 27,487 / 27,543 99.93% 4,362 / 4,365 — 99.75% 12,178 / 12,208 98.96% 1,619 / 1,636
SafariSafari
 — 2.28% 39 / 1,707 1.7% 121 / 7,118 — —
EdgeEdge
 100.0% 4,959 / 4,959 100.0% 49 / 49 — 100.0% 113 / 113 —
FirefoxFirefox
 94.95% 2,105 / 2,217 100.0% 264 / 264 — 0.0% 0 / 15 98.95% 284 / 287

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,825 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,161 / 5,163 99.85% 668 / 669 — 100.0% 2,217 / 2,217 99.0% 395 / 399
SafariSafari
 — 100.0% 282 / 282 100.0% 1,462 / 1,462 — —
EdgeEdge
 100.0% 986 / 986 100.0% 10 / 10 — 100.0% 27 / 27 —
FirefoxFirefox
 100.0% 425 / 425 100.0% 49 / 49 — — 100.0% 59 / 59