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Codec: avc1.421016

99.59% Encoder Support
62,543 of 62,803 sessions supported encoding
99.94% Decoder Support
11,789 of 11,796 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 2.2
Maximum Resolution SD/DVD (720×480)
Maximum Bitrate 4 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,803 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.74% 27,498 / 27,569 99.93% 4,228 / 4,231 — 99.67% 12,167 / 12,207 98.98% 1,553 / 1,569
SafariSafari
 — 100.0% 1,659 / 1,659 100.0% 7,014 / 7,014 — —
EdgeEdge
 99.98% 5,109 / 5,110 100.0% 51 / 51 — 100.0% 111 / 111 —
FirefoxFirefox
 95.24% 2,122 / 2,228 100.0% 270 / 270 — 0.0% 0 / 15 99.28% 274 / 276

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,796 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,231 / 5,232 99.85% 672 / 673 — 100.0% 2,196 / 2,196 99.21% 376 / 379
SafariSafari
 — 100.0% 270 / 270 100.0% 1,412 / 1,412 — —
EdgeEdge
 100.0% 1,044 / 1,044 — — 100.0% 34 / 34 —
FirefoxFirefox
 100.0% 397 / 397 100.0% 45 / 45 — — 100.0% 44 / 44