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Codec: avc1.420428

87.29% Encoder Support
280,050 of 320,812 sessions supported encoding
99.94% Decoder Support
269,963 of 270,121 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,812 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.82% 143,947 / 144,202 99.9% 19,744 / 19,763 — 99.77% 63,696 / 63,842 99.03% 7,631 / 7,706
SafariSafari
 — 2.01% 172 / 8,543 1.53% 477 / 31,238 — —
EdgeEdge
 100.0% 30,820 / 30,820 100.0% 388 / 388 — 99.49% 981 / 986 100.0% 66 / 66
FirefoxFirefox
 95.9% 9,452 / 9,856 100.0% 1,324 / 1,324 — 0.0% 0 / 27 98.98% 1,258 / 1,271

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,121 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,867 / 121,897 99.88% 16,130 / 16,149 — 99.99% 53,968 / 53,972 99.12% 6,426 / 6,483
SafariSafari
 — 99.94% 7,193 / 7,197 99.98% 25,646 / 25,652 — —
EdgeEdge
 100.0% 26,873 / 26,873 100.0% 351 / 351 — 100.0% 906 / 906 100.0% 58 / 58
FirefoxFirefox
 99.99% 8,047 / 8,048 100.0% 1,090 / 1,090 — 0.0% 0 / 20 99.32% 1,029 / 1,036