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Codec: avc1.4d040b

3.25% Encoder Support
69,971 of 2,149,745 sessions supported encoding
99.81% Decoder Support
2,094,491 of 2,098,511 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 1.1
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 192 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,745 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.01% 75 / 868,141 0.12% 121 / 100,621 — 0.02% 158 / 649,743 0.35% 155 / 44,019
SafariSafari
 — 1.46% 704 / 48,121 1.82% 3,967 / 218,410 — —
EdgeEdge
 0.01% 8 / 143,848 0.0% 0 / 1,424 — 0.0% 0 / 4,267 0.3% 2 / 672
FirefoxFirefox
 96.02% 51,323 / 53,453 99.96% 7,527 / 7,530 — 0.0% 0 / 101 98.06% 5,869 / 5,985

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,511 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,344 / 845,537 99.8% 96,832 / 97,024 — 99.66% 637,606 / 639,785 98.27% 42,081 / 42,823
SafariSafari
 — 99.84% 46,706 / 46,779 99.98% 212,696 / 212,732 — —
EdgeEdge
 100.0% 139,803 / 139,807 100.0% 1,378 / 1,378 — 100.0% 4,192 / 4,192 99.25% 661 / 666
FirefoxFirefox
 99.99% 51,626 / 51,632 99.99% 7,309 / 7,310 — 1.08% 1 / 93 98.15% 5,634 / 5,740