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Codec: avc1.420c0b

3.96% Encoder Support
12,683 of 320,446 sessions supported encoding
99.94% Decoder Support
269,337 of 269,511 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 320,446 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 46 / 143,896 0.12% 24 / 19,583 — 0.17% 109 / 64,063 0.78% 61 / 7,787
SafariSafari
 — 2.06% 175 / 8,491 1.43% 448 / 31,306 — —
EdgeEdge
 0.03% 9 / 30,864 0.0% 0 / 355 — 0.0% 0 / 984 0.0% 0 / 64
FirefoxFirefox
 95.95% 9,247 / 9,637 100.0% 1,288 / 1,288 — 0.0% 0 / 34 98.5% 1,245 / 1,264

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,511 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,585 / 121,618 99.94% 15,903 / 15,913 — 99.98% 53,973 / 53,985 99.12% 6,532 / 6,590
SafariSafari
 — 99.89% 7,108 / 7,116 99.98% 25,729 / 25,735 — —
EdgeEdge
 100.0% 26,846 / 26,846 100.0% 322 / 322 — 100.0% 908 / 908 100.0% 57 / 57
FirefoxFirefox
 100.0% 7,895 / 7,895 100.0% 1,073 / 1,073 — 0.0% 0 / 24 99.22% 1,018 / 1,026