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Codec: avc1.420c34

85.47% Encoder Support
53,627 of 62,740 sessions supported encoding
99.94% Decoder Support
11,738 of 11,745 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.2
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,740 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.71% 27,621 / 27,702 99.98% 4,310 / 4,311 — 99.78% 12,026 / 12,053 98.73% 1,638 / 1,659
SafariSafari
 — 2.19% 36 / 1,641 1.66% 115 / 6,935 — —
EdgeEdge
 99.98% 5,063 / 5,064 100.0% 49 / 49 — 100.0% 106 / 106 100.0% 10 / 10
FirefoxFirefox
 94.83% 2,055 / 2,167 100.0% 288 / 288 — 0.0% 0 / 10 99.28% 276 / 278

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,745 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,143 / 5,145 99.85% 672 / 673 — 100.0% 2,183 / 2,183 99.26% 401 / 404
SafariSafari
 — 100.0% 256 / 256 100.0% 1,388 / 1,388 — —
EdgeEdge
 100.0% 1,073 / 1,073 — — 100.0% 37 / 37 —
FirefoxFirefox
 100.0% 395 / 395 100.0% 41 / 41 — — 100.0% 53 / 53