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Codec: avc1.420c0d

3.37% Encoder Support
72,406 of 2,150,905 sessions supported encoding
99.81% Decoder Support
2,096,089 of 2,100,167 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1.3
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 768 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,150,905 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 221 / 868,066 0.17% 173 / 100,553 — 0.31% 1,995 / 650,771 0.98% 430 / 44,068
SafariSafari
 — 1.47% 714 / 48,596 1.83% 3,987 / 218,248 — —
EdgeEdge
 0.03% 38 / 143,685 0.0% 0 / 1,444 — 0.0% 0 / 4,207 0.44% 3 / 687
FirefoxFirefox
 95.81% 51,363 / 53,608 99.92% 7,437 / 7,443 — 0.0% 0 / 118 97.61% 5,883 / 6,027

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,100,167 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,528 / 845,716 99.83% 96,765 / 96,933 — 99.65% 638,664 / 640,895 98.29% 42,149 / 42,881
SafariSafari
 — 99.85% 47,091 / 47,162 99.98% 212,671 / 212,711 — —
EdgeEdge
 99.99% 139,699 / 139,706 100.0% 1,398 / 1,398 — 100.0% 4,135 / 4,135 99.12% 677 / 683
FirefoxFirefox
 99.96% 51,805 / 51,828 99.93% 7,212 / 7,217 — 0.0% 0 / 108 98.26% 5,692 / 5,793