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Codec: avc1.420c1f

85.52% Encoder Support
53,974 of 63,114 sessions supported encoding
99.92% Decoder Support
11,924 of 11,933 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 3.1
Maximum Resolution HD ready (1024×960)
Maximum Bitrate 14 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,114 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.78% 27,911 / 27,973 99.95% 4,347 / 4,349 — 99.67% 12,040 / 12,080 98.86% 1,641 / 1,660
SafariSafari
 — 2.46% 39 / 1,588 1.47% 103 / 7,003 — —
EdgeEdge
 100.0% 4,985 / 4,985 100.0% 47 / 47 — 100.0% 116 / 116 100.0% 12 / 12
FirefoxFirefox
 94.99% 2,103 / 2,214 100.0% 290 / 290 — — 99.31% 288 / 290

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,933 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,199 / 5,201 99.71% 682 / 684 — 100.0% 2,271 / 2,271 99.25% 399 / 402
SafariSafari
 — 100.0% 255 / 255 100.0% 1,448 / 1,448 — —
EdgeEdge
 100.0% 1,027 / 1,027 — — 100.0% 32 / 32 —
FirefoxFirefox
 100.0% 422 / 422 100.0% 48 / 48 — — 100.0% 52 / 52