← Back to Codec Support Table

Codec: avc1.42100b

16.46% Encoder Support
52,742 of 320,399 sessions supported encoding
99.94% Decoder Support
268,767 of 268,941 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1.1
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 192 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,399 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 40 / 143,759 0.18% 35 / 19,740 — 0.14% 87 / 63,825 0.81% 63 / 7,755
SafariSafari
 — 99.91% 8,551 / 8,559 99.96% 31,299 / 31,310 — —
EdgeEdge
 0.03% 10 / 30,893 0.28% 1 / 351 — 0.0% 0 / 986 0.0% 0 / 60
FirefoxFirefox
 96.28% 9,333 / 9,694 99.92% 1,331 / 1,332 — 0.0% 0 / 31 98.04% 1,250 / 1,275

VideoDecoder Support Matrix

Browser × Platform decoder support from 268,941 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,219 / 121,252 99.86% 16,017 / 16,039 — 99.99% 53,668 / 53,675 99.03% 6,463 / 6,526
SafariSafari
 — 99.93% 7,192 / 7,197 99.98% 25,659 / 25,663 — —
EdgeEdge
 100.0% 26,861 / 26,862 100.0% 306 / 306 — 100.0% 905 / 905 100.0% 56 / 56
FirefoxFirefox
 99.99% 7,895 / 7,896 100.0% 1,097 / 1,097 — 0.0% 0 / 24 99.52% 1,040 / 1,045