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Codec: avc1.420c0c

4.0% Encoder Support
12,857 of 321,065 sessions supported encoding
99.94% Decoder Support
269,962 of 270,119 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 321,065 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.02% 36 / 144,113 0.15% 29 / 19,693 — 0.12% 79 / 63,856 0.75% 58 / 7,782
SafariSafari
 — 2.2% 192 / 8,736 1.5% 471 / 31,366 — —
EdgeEdge
 0.03% 10 / 30,950 0.0% 0 / 351 — 0.0% 0 / 938 0.0% 0 / 60
FirefoxFirefox
 95.86% 9,268 / 9,668 100.0% 1,386 / 1,386 — 0.0% 0 / 36 98.7% 1,292 / 1,309

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,119 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,717 / 121,742 99.89% 16,004 / 16,022 — 99.99% 53,912 / 53,917 99.24% 6,534 / 6,584
SafariSafari
 — 99.95% 7,360 / 7,364 99.98% 25,644 / 25,648 — —
EdgeEdge
 100.0% 27,012 / 27,012 100.0% 308 / 308 — 100.0% 880 / 880 98.21% 55 / 56
FirefoxFirefox
 100.0% 7,951 / 7,951 100.0% 1,144 / 1,144 — 0.0% 0 / 24 99.44% 1,068 / 1,074