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Codec: avc1.421432

87.27% Encoder Support
279,964 of 320,784 sessions supported encoding
99.93% Decoder Support
269,578 of 269,768 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5
Maximum Resolution 4K (4096×2176)
Maximum Bitrate 135 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,784 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.84% 144,193 / 144,430 99.92% 19,812 / 19,828 — 99.77% 63,037 / 63,184 98.91% 7,646 / 7,730
SafariSafari
 — 2.14% 184 / 8,595 1.47% 459 / 31,261 — —
EdgeEdge
 100.0% 31,175 / 31,175 100.0% 383 / 383 — 99.7% 993 / 996 98.51% 66 / 67
FirefoxFirefox
 95.94% 9,281 / 9,674 100.0% 1,309 / 1,309 — 0.0% 0 / 40 99.1% 1,325 / 1,337

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,768 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,920 / 121,958 99.9% 16,107 / 16,123 — 99.99% 53,326 / 53,334 99.11% 6,444 / 6,502
SafariSafari
 — 99.94% 7,201 / 7,205 99.99% 25,635 / 25,638 — —
EdgeEdge
 100.0% 27,200 / 27,200 100.0% 338 / 338 — 100.0% 915 / 915 98.44% 63 / 64
FirefoxFirefox
 100.0% 7,935 / 7,935 100.0% 1,076 / 1,076 — 0.0% 0 / 34 99.45% 1,082 / 1,088