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Codec: avc1.42103d

87.21% Encoder Support
1,870,713 of 2,145,054 sessions supported encoding
87.41% Decoder Support
1,830,389 of 2,093,967 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 6.1
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 480 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,145,054 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.91% 864,832 / 865,630 99.66% 99,840 / 100,184 — 99.26% 644,173 / 648,996 97.27% 42,417 / 43,607
SafariSafari
 — 1.5% 720 / 48,133 1.85% 4,027 / 218,214 — —
EdgeEdge
 99.97% 143,259 / 143,299 100.0% 1,504 / 1,504 — 99.78% 4,133 / 4,142 99.71% 680 / 682
FirefoxFirefox
 95.93% 51,452 / 53,637 99.99% 7,404 / 7,405 — 0.0% 0 / 115 98.58% 5,919 / 6,004

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,093,967 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 842,652 / 843,022 99.65% 96,235 / 96,570 — 99.37% 635,131 / 639,180 97.33% 41,279 / 42,412
SafariSafari
 — 1.54% 722 / 46,752 1.85% 3,935 / 212,559 — —
EdgeEdge
 99.97% 139,218 / 139,258 100.0% 1,463 / 1,463 — 100.0% 4,088 / 4,088 99.85% 675 / 676
FirefoxFirefox
 99.95% 51,818 / 51,845 99.87% 7,150 / 7,159 — 0.0% 0 / 105 98.29% 5,693 / 5,792