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Codec: avc1.420c0a

4.54% Encoder Support
2,887 of 63,585 sessions supported encoding
99.93% Decoder Support
12,084 of 12,092 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 63,585 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 8 / 28,100 0.16% 7 / 4,413 — 0.2% 25 / 12,269 0.81% 13 / 1,610
SafariSafari
 — 2.53% 43 / 1,697 1.54% 109 / 7,070 — —
EdgeEdge
 0.0% 0 / 4,952 0.0% 0 / 53 — 0.0% 0 / 111 0.0% 0 / 11
FirefoxFirefox
 95.08% 2,066 / 2,173 100.0% 287 / 287 — — 98.44% 316 / 321

VideoDecoder Support Matrix

Browser × Platform decoder support from 12,092 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.94% 5,365 / 5,368 100.0% 669 / 669 — 100.0% 2,289 / 2,289 99.51% 403 / 405
SafariSafari
 — 100.0% 286 / 286 100.0% 1,421 / 1,421 — —
EdgeEdge
 100.0% 1,009 / 1,009 — — 100.0% 32 / 32 —
FirefoxFirefox
 100.0% 390 / 390 100.0% 54 / 54 — — 100.0% 64 / 64