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Codec: avc1.42100a

15.67% Encoder Support
336,604 of 2,147,872 sessions supported encoding
99.81% Decoder Support
2,092,814 of 2,096,889 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 2,147,872 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 250 / 867,173 0.16% 159 / 100,359 — 0.3% 1,971 / 649,141 0.94% 410 / 43,733
SafariSafari
 — 99.71% 48,263 / 48,404 99.97% 218,251 / 218,320 — —
EdgeEdge
 0.02% 30 / 144,035 0.07% 1 / 1,399 — 0.0% 0 / 4,270 0.14% 1 / 695
FirefoxFirefox
 96.02% 51,406 / 53,538 99.9% 7,280 / 7,287 — 0.0% 0 / 126 97.93% 5,765 / 5,887

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,096,889 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,481 / 844,657 99.81% 96,514 / 96,697 — 99.65% 637,005 / 639,272 98.36% 41,799 / 42,498
SafariSafari
 — 99.83% 46,923 / 47,003 99.98% 212,617 / 212,666 — —
EdgeEdge
 99.99% 140,071 / 140,083 100.0% 1,355 / 1,355 — 100.0% 4,175 / 4,175 99.13% 684 / 690
FirefoxFirefox
 99.97% 51,835 / 51,848 99.99% 7,068 / 7,069 — 0.0% 0 / 115 98.56% 5,595 / 5,677