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Codec: avc1.421034

99.7% Encoder Support
319,793 of 320,741 sessions supported encoding
99.93% Decoder Support
269,655 of 269,839 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.2
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,741 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.81% 143,959 / 144,231 99.92% 19,747 / 19,763 — 99.8% 63,970 / 64,098 99.02% 7,684 / 7,760
SafariSafari
 — 99.93% 8,578 / 8,584 99.98% 31,082 / 31,087 — —
EdgeEdge
 99.99% 30,707 / 30,709 100.0% 374 / 374 — 99.9% 1,008 / 1,009 98.36% 60 / 61
FirefoxFirefox
 96.15% 9,282 / 9,654 100.0% 1,300 / 1,300 — 0.0% 0 / 33 98.76% 1,272 / 1,288

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,839 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,781 / 121,823 99.9% 15,999 / 16,015 — 99.99% 54,179 / 54,186 99.15% 6,447 / 6,502
SafariSafari
 — 99.94% 7,174 / 7,178 99.98% 25,554 / 25,559 — —
EdgeEdge
 100.0% 26,836 / 26,837 100.0% 332 / 332 — 100.0% 936 / 936 98.18% 54 / 55
FirefoxFirefox
 99.99% 7,861 / 7,862 100.0% 1,090 / 1,090 — 0.0% 0 / 28 99.23% 1,035 / 1,043