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Codec: avc1.42040a

3.94% Encoder Support
12,658 of 321,066 sessions supported encoding
99.93% Decoder Support
269,698 of 269,885 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 64 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,066 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.02% 28 / 144,755 0.15% 30 / 19,465 — 0.13% 82 / 63,749 0.79% 61 / 7,733
SafariSafari
 — 2.14% 181 / 8,473 1.4% 440 / 31,445 — —
EdgeEdge
 0.01% 4 / 31,005 0.0% 0 / 363 — 0.0% 0 / 954 0.0% 0 / 58
FirefoxFirefox
 96.13% 9,214 / 9,585 100.0% 1,300 / 1,300 — 0.0% 0 / 42 98.02% 1,285 / 1,311

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
 99.96% 122,157 / 122,200 99.91% 15,787 / 15,802 — 99.98% 53,847 / 53,856 99.04% 6,469 / 6,532
SafariSafari
 — 99.92% 7,123 / 7,129 99.99% 25,730 / 25,733 — —
EdgeEdge
 100.0% 26,994 / 26,994 100.0% 320 / 320 — 100.0% 884 / 884 98.04% 50 / 51
FirefoxFirefox
 99.99% 7,830 / 7,831 100.0% 1,069 / 1,069 — 0.0% 0 / 26 99.24% 1,045 / 1,053