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Codec: avc1.64042a

86.29% Encoder Support
276,856 of 320,838 sessions supported encoding
99.93% Decoder Support
269,648 of 269,826 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile High
Level 4.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,838 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.24% 143,114 / 144,205 99.86% 19,589 / 19,617 — 96.29% 61,500 / 63,869 97.52% 7,678 / 7,873
SafariSafari
 — 1.95% 166 / 8,500 1.52% 474 / 31,144 — —
EdgeEdge
 99.73% 30,824 / 30,906 100.0% 359 / 359 — 98.26% 958 / 975 97.1% 67 / 69
FirefoxFirefox
 95.76% 9,377 / 9,792 100.0% 1,358 / 1,358 — 0.0% 0 / 36 98.69% 1,279 / 1,296

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,826 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,823 / 121,857 99.86% 15,974 / 15,996 — 99.98% 53,844 / 53,855 99.19% 6,576 / 6,630
SafariSafari
 — 99.9% 7,107 / 7,114 100.0% 25,522 / 25,523 — —
EdgeEdge
 100.0% 26,909 / 26,910 100.0% 322 / 322 — 100.0% 903 / 903 96.61% 57 / 59
FirefoxFirefox
 100.0% 8,028 / 8,028 100.0% 1,105 / 1,105 — 0.0% 0 / 21 99.16% 1,064 / 1,073