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Codec: avc1.4d042a

86.51% Encoder Support
277,720 of 321,036 sessions supported encoding
99.93% Decoder Support
269,683 of 269,866 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,036 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.28% 143,366 / 144,409 99.86% 19,623 / 19,651 — 97.56% 62,046 / 63,598 97.83% 7,625 / 7,794
SafariSafari
 — 1.91% 165 / 8,656 1.51% 472 / 31,271 — —
EdgeEdge
 99.79% 30,983 / 31,049 100.0% 389 / 389 — 99.08% 966 / 975 98.57% 69 / 70
FirefoxFirefox
 96.06% 9,317 / 9,699 100.0% 1,303 / 1,303 — 0.0% 0 / 33 98.55% 1,292 / 1,311

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,866 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,899 / 121,934 99.89% 15,999 / 16,016 — 99.98% 53,656 / 53,665 99.03% 6,520 / 6,584
SafariSafari
 — 99.92% 7,284 / 7,290 99.98% 25,582 / 25,587 — —
EdgeEdge
 100.0% 26,997 / 26,997 100.0% 343 / 343 — 100.0% 895 / 895 100.0% 64 / 64
FirefoxFirefox
 99.99% 7,927 / 7,928 100.0% 1,064 / 1,064 — 0.0% 0 / 23 99.35% 1,064 / 1,071