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Codec: avc1.421029

99.62% Encoder Support
62,891 of 63,131 sessions supported encoding
99.97% Decoder Support
11,879 of 11,883 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 63,131 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.75% 27,683 / 27,751 99.98% 4,430 / 4,431 — 99.76% 12,067 / 12,096 99.05% 1,662 / 1,678
SafariSafari
 — 99.94% 1,622 / 1,623 100.0% 7,074 / 7,074 — —
EdgeEdge
 100.0% 5,115 / 5,115 100.0% 53 / 53 — 100.0% 105 / 105 —
FirefoxFirefox
 94.66% 2,055 / 2,171 100.0% 280 / 280 — — 99.27% 272 / 274

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,883 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,162 / 5,163 100.0% 712 / 712 — 100.0% 2,199 / 2,199 99.53% 425 / 427
SafariSafari
 — 100.0% 274 / 274 100.0% 1,402 / 1,402 — —
EdgeEdge
 100.0% 1,093 / 1,093 — — 100.0% 24 / 24 —
FirefoxFirefox
 100.0% 408 / 408 100.0% 49 / 49 — — 100.0% 54 / 54