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Codec: avc1.420029

99.7% Encoder Support
320,542 of 321,514 sessions supported encoding
99.93% Decoder Support
269,991 of 270,188 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,514 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.83% 144,022 / 144,261 99.9% 19,808 / 19,828 — 99.76% 63,719 / 63,870 98.71% 7,636 / 7,736
SafariSafari
 — 99.89% 8,541 / 8,550 99.99% 31,311 / 31,315 — —
EdgeEdge
 100.0% 31,262 / 31,263 100.0% 380 / 380 — 99.81% 1,027 / 1,029 98.46% 64 / 65
FirefoxFirefox
 96.14% 9,401 / 9,778 100.0% 1,310 / 1,310 — 0.0% 0 / 33 98.85% 1,292 / 1,307

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,188 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,573 / 121,612 99.88% 16,162 / 16,182 — 99.99% 53,978 / 53,984 98.92% 6,438 / 6,508
SafariSafari
 — 99.89% 7,157 / 7,165 99.98% 25,663 / 25,667 — —
EdgeEdge
 100.0% 27,166 / 27,167 100.0% 346 / 346 — 100.0% 959 / 959 98.18% 54 / 55
FirefoxFirefox
 99.99% 7,988 / 7,989 100.0% 1,081 / 1,081 — 0.0% 0 / 24 99.34% 1,058 / 1,065