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Codec: avc1.420833

85.45% Encoder Support
53,781 of 62,939 sessions supported encoding
99.93% Decoder Support
11,735 of 11,743 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 62,939 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.74% 27,699 / 27,770 99.93% 4,350 / 4,353 — 99.74% 12,117 / 12,149 99.19% 1,592 / 1,605
SafariSafari
 — 2.67% 44 / 1,648 1.51% 105 / 6,956 — —
EdgeEdge
 100.0% 5,049 / 5,049 100.0% 48 / 48 — 100.0% 107 / 107 —
FirefoxFirefox
 94.59% 2,063 / 2,181 100.0% 272 / 272 — 0.0% 0 / 15 98.31% 291 / 296

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,743 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,215 / 5,216 99.85% 649 / 650 — 100.0% 2,202 / 2,202 99.19% 369 / 372
SafariSafari
 — 100.0% 264 / 264 100.0% 1,379 / 1,379 — —
EdgeEdge
 100.0% 1,013 / 1,013 — — 100.0% 31 / 31 —
FirefoxFirefox
 100.0% 402 / 402 100.0% 47 / 47 — — 100.0% 69 / 69