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Codec: avc1.4d1028

98.71% Encoder Support
2,122,052 of 2,149,842 sessions supported encoding
99.8% Decoder Support
2,094,650 of 2,098,856 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 4
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,842 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.39% 862,930 / 868,254 99.74% 100,206 / 100,464 — 97.33% 632,622 / 649,990 96.62% 42,317 / 43,799
SafariSafari
 — 99.75% 47,967 / 48,086 99.98% 217,739 / 217,793 — —
EdgeEdge
 99.84% 143,752 / 143,980 100.0% 1,461 / 1,461 — 99.36% 4,065 / 4,091 98.25% 675 / 687
FirefoxFirefox
 95.94% 51,863 / 54,057 99.97% 7,477 / 7,479 — 0.0% 0 / 126 98.7% 5,993 / 6,072

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,856 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,672 / 845,878 99.79% 96,572 / 96,776 — 99.64% 637,809 / 640,089 98.27% 41,864 / 42,601
SafariSafari
 — 99.83% 46,614 / 46,692 99.97% 212,122 / 212,177 — —
EdgeEdge
 99.99% 139,990 / 140,000 100.0% 1,412 / 1,412 — 100.0% 4,011 / 4,011 98.68% 672 / 681
FirefoxFirefox
 99.96% 52,249 / 52,268 99.96% 7,247 / 7,250 — 0.0% 0 / 110 98.27% 5,734 / 5,835