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Codec: avc1.42100a

18.7% Encoder Support
11,773 of 62,963 sessions supported encoding
99.97% Decoder Support
12,000 of 12,004 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 62,963 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.04% 10 / 27,747 0.07% 3 / 4,375 — 0.16% 19 / 12,142 0.55% 9 / 1,628
SafariSafari
 — 99.88% 1,677 / 1,679 99.99% 7,057 / 7,058 — —
EdgeEdge
 0.0% 0 / 5,016 0.0% 0 / 54 — 0.0% 0 / 118 —
FirefoxFirefox
 95.27% 1,995 / 2,094 100.0% 271 / 271 — 0.0% 0 / 12 99.63% 267 / 268

VideoDecoder Support Matrix

Browser × Platform decoder support from 12,004 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 100.0% 5,236 / 5,236 99.86% 712 / 713 — 100.0% 2,273 / 2,273 99.49% 391 / 393
SafariSafari
 — 100.0% 283 / 283 100.0% 1,417 / 1,417 — —
EdgeEdge
 100.0% 1,064 / 1,064 100.0% 10 / 10 — 100.0% 23 / 23 —
FirefoxFirefox
 100.0% 404 / 404 100.0% 53 / 53 — — 100.0% 59 / 59