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Codec: avc1.42140a

3.37% Encoder Support
72,278 of 2,146,973 sessions supported encoding
99.8% Decoder Support
2,091,894 of 2,096,039 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 64 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,146,973 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 248 / 866,930 0.17% 169 / 100,720 — 0.29% 1,911 / 648,603 0.92% 407 / 44,046
SafariSafari
 — 1.48% 717 / 48,286 1.83% 3,989 / 217,629 — —
EdgeEdge
 0.03% 40 / 143,845 0.0% 0 / 1,518 — 0.0% 0 / 4,167 0.15% 1 / 669
FirefoxFirefox
 95.86% 51,370 / 53,588 99.91% 7,464 / 7,471 — 0.0% 0 / 109 98.01% 5,797 / 5,915

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,096,039 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,415 / 844,622 99.8% 96,759 / 96,956 — 99.64% 636,405 / 638,676 98.34% 42,145 / 42,856
SafariSafari
 — 99.84% 46,843 / 46,919 99.98% 211,975 / 212,014 — —
EdgeEdge
 100.0% 139,872 / 139,877 100.0% 1,478 / 1,478 — 100.0% 4,097 / 4,097 98.64% 655 / 664
FirefoxFirefox
 99.96% 51,793 / 51,814 99.97% 7,212 / 7,214 — 0.0% 0 / 104 98.63% 5,616 / 5,694