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Codec: avc1.420c3c

85.18% Encoder Support
53,295 of 62,571 sessions supported encoding
85.2% Decoder Support
10,045 of 11,790 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 6
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,571 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.75% 27,451 / 27,520 99.86% 4,260 / 4,266 — 99.59% 12,071 / 12,121 98.54% 1,550 / 1,573
SafariSafari
 — 2.0% 33 / 1,652 1.58% 112 / 7,077 — —
EdgeEdge
 99.98% 4,972 / 4,973 100.0% 49 / 49 — 100.0% 121 / 121 100.0% 13 / 13
FirefoxFirefox
 95.1% 2,077 / 2,184 100.0% 267 / 267 — — 98.61% 284 / 288

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,790 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,140 / 5,141 100.0% 664 / 664 — 99.78% 2,265 / 2,270 99.22% 380 / 383
SafariSafari
 — 2.55% 7 / 275 1.88% 27 / 1,434 — —
EdgeEdge
 100.0% 1,020 / 1,020 — — 100.0% 39 / 39 —
FirefoxFirefox
 100.0% 386 / 386 100.0% 48 / 48 — — 100.0% 50 / 50