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Codec: avc1.42040a

3.36% Encoder Support
72,098 of 2,148,773 sessions supported encoding
99.8% Decoder Support
2,093,454 of 2,097,592 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 2,148,773 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 230 / 868,055 0.18% 181 / 100,475 — 0.3% 1,971 / 648,870 0.9% 395 / 43,730
SafariSafari
 — 1.55% 751 / 48,410 1.82% 3,983 / 218,899 — —
EdgeEdge
 0.02% 34 / 143,561 0.0% 0 / 1,471 — 0.0% 0 / 4,229 0.58% 4 / 687
FirefoxFirefox
 95.83% 51,153 / 53,380 99.92% 7,360 / 7,366 — 0.0% 0 / 119 97.86% 5,852 / 5,980

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,592 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,295 / 845,500 99.8% 96,619 / 96,812 — 99.65% 636,740 / 638,977 98.25% 41,786 / 42,529
SafariSafari
 — 99.83% 46,988 / 47,066 99.98% 213,136 / 213,187 — —
EdgeEdge
 100.0% 139,547 / 139,550 100.0% 1,428 / 1,428 — 100.0% 4,159 / 4,159 99.12% 674 / 680
FirefoxFirefox
 99.97% 51,610 / 51,626 99.97% 7,133 / 7,135 — 0.0% 0 / 103 98.29% 5,624 / 5,722