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Codec: avc1.420c0c

3.35% Encoder Support
72,135 of 2,150,393 sessions supported encoding
99.8% Decoder Support
2,095,234 of 2,099,445 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 2,150,393 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 240 / 867,642 0.16% 162 / 100,878 — 0.3% 1,944 / 650,293 0.92% 407 / 44,039
SafariSafari
 — 1.55% 747 / 48,261 1.84% 4,025 / 218,792 — —
EdgeEdge
 0.03% 42 / 143,920 0.07% 1 / 1,446 — 0.0% 0 / 4,115 0.15% 1 / 664
FirefoxFirefox
 95.8% 51,009 / 53,246 99.89% 7,434 / 7,442 — 0.0% 0 / 112 98.0% 5,936 / 6,057

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,099,445 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,079 / 845,271 99.79% 97,000 / 97,207 — 99.64% 638,028 / 640,354 98.31% 42,118 / 42,841
SafariSafari
 — 99.82% 46,805 / 46,888 99.98% 213,030 / 213,074 — —
EdgeEdge
 99.99% 139,973 / 139,982 100.0% 1,403 / 1,403 — 100.0% 4,057 / 4,057 98.94% 653 / 660
FirefoxFirefox
 99.96% 51,507 / 51,529 99.93% 7,195 / 7,200 — 1.0% 1 / 100 98.54% 5,736 / 5,821