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Codec: avc1.640433

84.48% Encoder Support
53,340 of 63,141 sessions supported encoding
99.95% Decoder Support
12,051 of 12,057 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile High
Level 5.1
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,141 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.11% 27,565 / 27,813 99.84% 4,391 / 4,398 — 96.35% 11,811 / 12,258 97.77% 1,537 / 1,572
SafariSafari
 — 2.49% 40 / 1,608 1.59% 111 / 6,998 — —
EdgeEdge
 99.84% 5,061 / 5,069 100.0% 54 / 54 — 97.17% 103 / 106 100.0% 11 / 11
FirefoxFirefox
 94.84% 2,041 / 2,152 100.0% 278 / 278 — — 99.34% 303 / 305

VideoDecoder Support Matrix

Browser × Platform decoder support from 12,057 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,348 / 5,349 99.69% 653 / 655 — 100.0% 2,269 / 2,269 99.51% 404 / 406
SafariSafari
 — 100.0% 247 / 247 100.0% 1,432 / 1,432 — —
EdgeEdge
 100.0% 1,059 / 1,059 — — 100.0% 24 / 24 —
FirefoxFirefox
 100.0% 396 / 396 100.0% 58 / 58 — — 100.0% 75 / 75