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Codec: avc1.42042a

87.27% Encoder Support
280,327 of 321,235 sessions supported encoding
99.93% Decoder Support
269,733 of 269,930 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,235 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.83% 144,230 / 144,472 99.91% 19,769 / 19,786 — 99.77% 63,513 / 63,662 98.95% 7,706 / 7,788
SafariSafari
 — 2.05% 175 / 8,528 1.45% 457 / 31,413 — —
EdgeEdge
 99.99% 30,974 / 30,976 100.0% 400 / 400 — 99.6% 993 / 997 98.51% 66 / 67
FirefoxFirefox
 96.06% 9,331 / 9,714 100.0% 1,343 / 1,343 — 0.0% 0 / 39 98.9% 1,254 / 1,268

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,930 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,658 / 121,693 99.9% 16,147 / 16,163 — 99.98% 53,738 / 53,750 99.02% 6,547 / 6,612
SafariSafari
 — 99.87% 7,161 / 7,170 99.99% 25,791 / 25,794 — —
EdgeEdge
 99.99% 27,023 / 27,025 100.0% 357 / 357 — 100.0% 917 / 917 98.33% 59 / 60
FirefoxFirefox
 99.97% 7,808 / 7,810 100.0% 1,112 / 1,112 — 0.0% 0 / 26 99.04% 1,034 / 1,044