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Codec: avc1.42040a

4.52% Encoder Support
2,857 of 63,160 sessions supported encoding
99.96% Decoder Support
11,991 of 11,996 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 63,160 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.02% 6 / 27,796 0.21% 9 / 4,339 — 0.12% 15 / 12,186 0.62% 10 / 1,605
SafariSafari
 — 2.82% 46 / 1,633 1.6% 114 / 7,115 — —
EdgeEdge
 0.0% 0 / 5,056 0.0% 0 / 49 — 0.0% 0 / 98 0.0% 0 / 12
FirefoxFirefox
 95.68% 2,060 / 2,153 100.0% 276 / 276 — 0.0% 0 / 18 98.4% 308 / 313

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,996 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 100.0% 5,243 / 5,243 100.0% 676 / 676 — 100.0% 2,293 / 2,293 99.26% 401 / 404
SafariSafari
 — 100.0% 292 / 292 100.0% 1,415 / 1,415 — —
EdgeEdge
 100.0% 1,045 / 1,045 — — 100.0% 28 / 28 —
FirefoxFirefox
 100.0% 399 / 399 100.0% 45 / 45 — — 100.0% 55 / 55