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Codec: avc1.42102a

99.71% Encoder Support
319,753 of 320,678 sessions supported encoding
99.94% Decoder Support
269,396 of 269,556 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,678 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.84% 144,009 / 144,243 99.93% 19,641 / 19,655 — 99.79% 63,617 / 63,754 98.96% 7,782 / 7,864
SafariSafari
 — 99.93% 8,499 / 8,505 99.99% 31,105 / 31,108 — —
EdgeEdge
 100.0% 31,051 / 31,051 100.0% 353 / 353 — 99.79% 952 / 954 100.0% 59 / 59
FirefoxFirefox
 96.06% 9,320 / 9,702 100.0% 1,356 / 1,356 — 0.0% 0 / 37 98.82% 1,253 / 1,268

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,556 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,768 / 121,805 99.92% 15,964 / 15,977 — 99.99% 53,765 / 53,771 99.12% 6,615 / 6,674
SafariSafari
 — 99.93% 7,111 / 7,116 99.99% 25,406 / 25,409 — —
EdgeEdge
 100.0% 27,068 / 27,068 100.0% 305 / 305 — 100.0% 881 / 881 100.0% 55 / 55
FirefoxFirefox
 100.0% 7,926 / 7,926 100.0% 1,127 / 1,127 — 0.0% 0 / 26 99.81% 1,030 / 1,032