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Codec: avc1.421429

87.2% Encoder Support
279,967 of 321,072 sessions supported encoding
99.94% Decoder Support
269,723 of 269,885 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 321,072 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.83% 143,888 / 144,131 99.88% 19,769 / 19,793 — 99.76% 63,469 / 63,621 99.2% 7,793 / 7,856
SafariSafari
 — 1.81% 156 / 8,621 1.4% 441 / 31,447 — —
EdgeEdge
 100.0% 30,943 / 30,943 99.72% 360 / 361 — 99.47% 947 / 952 98.25% 56 / 57
FirefoxFirefox
 96.25% 9,459 / 9,828 100.0% 1,296 / 1,296 — 0.0% 0 / 33 98.85% 1,292 / 1,307

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,885 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,588 / 121,623 99.84% 16,061 / 16,086 — 99.99% 53,708 / 53,714 99.34% 6,587 / 6,631
SafariSafari
 — 99.94% 7,247 / 7,251 99.99% 25,800 / 25,802 — —
EdgeEdge
 100.0% 26,923 / 26,923 100.0% 320 / 320 — 100.0% 872 / 872 100.0% 51 / 51
FirefoxFirefox
 99.99% 8,047 / 8,048 100.0% 1,057 / 1,057 — 0.0% 0 / 26 99.63% 1,076 / 1,080