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Codec: avc1.420c3c

87.22% Encoder Support
279,492 of 320,436 sessions supported encoding
87.81% Decoder Support
236,762 of 269,628 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 320,436 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.81% 143,454 / 143,728 99.72% 19,579 / 19,634 — 99.68% 63,535 / 63,739 98.45% 7,792 / 7,915
SafariSafari
 — 2.12% 185 / 8,721 1.52% 472 / 31,102 — —
EdgeEdge
 99.96% 31,128 / 31,139 100.0% 338 / 338 — 99.79% 957 / 959 100.0% 63 / 63
FirefoxFirefox
 96.0% 9,312 / 9,700 100.0% 1,275 / 1,275 — 0.0% 0 / 34 98.8% 1,312 / 1,328

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,628 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 121,293 / 121,348 99.69% 15,983 / 16,032 — 99.87% 53,819 / 53,888 98.54% 6,627 / 6,725
SafariSafari
 — 2.17% 159 / 7,337 1.51% 384 / 25,440 — —
EdgeEdge
 99.96% 27,176 / 27,186 100.0% 298 / 298 — 100.0% 877 / 877 100.0% 55 / 55
FirefoxFirefox
 99.9% 7,894 / 7,902 99.91% 1,055 / 1,056 — 0.0% 0 / 28 99.27% 1,082 / 1,090