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Codec: avc1.4d1029

98.96% Encoder Support
318,056 of 321,386 sessions supported encoding
99.94% Decoder Support
269,987 of 270,158 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 4.1
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,386 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.27% 143,319 / 144,372 99.86% 19,682 / 19,709 — 97.56% 62,399 / 63,961 98.06% 7,590 / 7,740
SafariSafari
 — 99.94% 8,548 / 8,553 99.99% 31,226 / 31,229 — —
EdgeEdge
 99.79% 31,185 / 31,250 100.0% 384 / 384 — 98.86% 953 / 964 98.44% 63 / 64
FirefoxFirefox
 96.2% 9,367 / 9,737 100.0% 1,334 / 1,334 — 0.0% 0 / 36 99.07% 1,282 / 1,294

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,158 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,558 / 121,592 99.91% 16,063 / 16,078 — 99.99% 54,105 / 54,109 99.03% 6,465 / 6,528
SafariSafari
 — 99.93% 7,146 / 7,151 99.99% 25,696 / 25,699 — —
EdgeEdge
 100.0% 27,208 / 27,209 100.0% 338 / 338 — 100.0% 890 / 890 98.31% 58 / 59
FirefoxFirefox
 99.97% 7,917 / 7,919 100.0% 1,123 / 1,123 — 0.0% 0 / 23 99.53% 1,067 / 1,072