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Codec: avc1.420433

85.26% Encoder Support
53,843 of 63,153 sessions supported encoding
99.88% Decoder Support
12,002 of 12,016 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.1
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,153 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
99.74% 27,760 / 27,831 99.93% 4,325 / 4,328 99.7% 12,167 / 12,203 98.31% 1,566 / 1,593
SafariSafari
2.58% 43 / 1,664 1.44% 102 / 7,089
EdgeEdge
100.0% 4,997 / 4,997 100.0% 58 / 58 100.0% 109 / 109
FirefoxFirefox
95.01% 2,094 / 2,204 100.0% 286 / 286 98.99% 294 / 297

VideoDecoder Support Matrix

Browser × Platform decoder support from 12,016 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
99.94% 5,219 / 5,222 99.71% 678 / 680 100.0% 2,241 / 2,241 98.36% 420 / 427
SafariSafari
100.0% 268 / 268 100.0% 1,455 / 1,455
EdgeEdge
100.0% 1,062 / 1,062 100.0% 12 / 12 100.0% 24 / 24
FirefoxFirefox
100.0% 425 / 425 100.0% 51 / 51 100.0% 61 / 61