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Codec: avc1.420c0c

4.52% Encoder Support
2,838 of 62,820 sessions supported encoding
99.93% Decoder Support
11,883 of 11,891 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1.2
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 384 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,820 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.04% 12 / 27,603 0.12% 5 / 4,340 — 0.14% 17 / 12,159 0.5% 8 / 1,590
SafariSafari
 — 2.83% 46 / 1,627 1.81% 129 / 7,127 — —
EdgeEdge
 0.0% 0 / 4,972 0.0% 0 / 52 — 0.0% 0 / 99 —
FirefoxFirefox
 94.85% 2,026 / 2,136 100.0% 280 / 280 — 0.0% 0 / 15 99.01% 300 / 303

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,891 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 100.0% 5,234 / 5,234 99.7% 667 / 669 — 100.0% 2,220 / 2,220 99.23% 389 / 392
SafariSafari
 — 100.0% 260 / 260 100.0% 1,419 / 1,419 — —
EdgeEdge
 100.0% 1,034 / 1,034 — — 100.0% 41 / 41 —
FirefoxFirefox
 100.0% 419 / 419 100.0% 38 / 38 — — 100.0% 68 / 68