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Codec: avc1.420c1e

85.18% Encoder Support
53,977 of 63,366 sessions supported encoding
99.94% Decoder Support
11,904 of 11,911 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 3
Maximum Resolution SD/DVD (720×480)
Maximum Bitrate 10 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,366 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.71% 27,701 / 27,781 99.98% 4,352 / 4,353 — 99.72% 12,139 / 12,173 98.69% 1,579 / 1,600
SafariSafari
 — 1.79% 30 / 1,672 1.88% 135 / 7,185 — —
EdgeEdge
 100.0% 5,104 / 5,104 100.0% 36 / 36 — 100.0% 107 / 107 100.0% 15 / 15
FirefoxFirefox
 95.21% 2,166 / 2,275 100.0% 260 / 260 — 0.0% 0 / 11 98.77% 322 / 326

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,911 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 100.0% 5,162 / 5,162 99.85% 674 / 675 — 100.0% 2,257 / 2,257 98.76% 399 / 404
SafariSafari
 — 100.0% 279 / 279 100.0% 1,454 / 1,454 — —
EdgeEdge
 100.0% 1,038 / 1,038 — — 100.0% 33 / 33 —
FirefoxFirefox
 100.0% 424 / 424 100.0% 38 / 38 — — 100.0% 59 / 59