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Codec: avc1.4d140b

3.25% Encoder Support
69,837 of 2,146,875 sessions supported encoding
99.8% Decoder Support
2,091,588 of 2,095,725 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 2,146,875 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.01% 71 / 866,115 0.12% 116 / 100,645 — 0.03% 180 / 649,764 0.34% 150 / 43,875
SafariSafari
 — 1.52% 732 / 48,231 1.86% 4,041 / 217,758 — —
EdgeEdge
 0.0% 2 / 143,527 0.07% 1 / 1,494 — 0.0% 0 / 4,237 0.0% 0 / 683
FirefoxFirefox
 95.79% 51,226 / 53,478 99.85% 7,341 / 7,352 — 0.0% 0 / 128 97.65% 5,909 / 6,051

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,095,725 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 843,298 / 843,494 99.8% 96,746 / 96,937 — 99.65% 637,610 / 639,853 98.3% 41,981 / 42,709
SafariSafari
 — 99.84% 46,726 / 46,802 99.98% 212,169 / 212,220 — —
EdgeEdge
 99.99% 139,479 / 139,488 100.0% 1,455 / 1,455 — 100.0% 4,156 / 4,156 98.97% 671 / 678
FirefoxFirefox
 99.97% 51,715 / 51,729 99.93% 7,136 / 7,141 — 0.83% 1 / 120 98.54% 5,735 / 5,820