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Codec: avc1.421432

85.38% Encoder Support
53,679 of 62,872 sessions supported encoding
99.91% Decoder Support
11,870 of 11,881 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5
Maximum Resolution 4K (4096×2176)
Maximum Bitrate 135 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,872 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.77% 27,645 / 27,708 99.95% 4,389 / 4,391 — 99.68% 12,044 / 12,083 98.77% 1,606 / 1,626
SafariSafari
 — 2.07% 34 / 1,642 1.7% 119 / 7,010 — —
EdgeEdge
 100.0% 5,003 / 5,003 100.0% 57 / 57 — 100.0% 113 / 113 —
FirefoxFirefox
 95.0% 2,031 / 2,138 100.0% 286 / 286 — — 99.02% 303 / 306

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,881 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,236 / 5,238 99.85% 685 / 686 — 100.0% 2,233 / 2,233 98.74% 393 / 398
SafariSafari
 — 100.0% 258 / 258 100.0% 1,404 / 1,404 — —
EdgeEdge
 100.0% 1,028 / 1,028 100.0% 12 / 12 — 100.0% 32 / 32 —
FirefoxFirefox
 100.0% 399 / 399 100.0% 53 / 53 — — 100.0% 57 / 57