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Codec: avc1.4d040d

4.32% Encoder Support
2,725 of 63,031 sessions supported encoding
99.92% Decoder Support
11,834 of 11,844 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 1.3
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 768 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,031 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 7 / 27,844 0.09% 4 / 4,353 — 0.03% 4 / 12,130 0.31% 5 / 1,595
SafariSafari
 — 2.45% 40 / 1,634 1.74% 124 / 7,109 — —
EdgeEdge
 0.0% 0 / 5,060 0.0% 0 / 49 — 0.0% 0 / 103 —
FirefoxFirefox
 94.71% 1,950 / 2,059 100.0% 275 / 275 — 0.0% 0 / 11 100.0% 305 / 305

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,844 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,106 / 5,108 99.86% 706 / 707 — 100.0% 2,226 / 2,226 99.23% 386 / 389
SafariSafari
 — 100.0% 293 / 293 100.0% 1,421 / 1,421 — —
EdgeEdge
 100.0% 1,053 / 1,053 100.0% 11 / 11 — 100.0% 27 / 27 —
FirefoxFirefox
 100.0% 400 / 400 100.0% 53 / 53 — — 100.0% 59 / 59