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Codec: avc1.4d1033

98.98% Encoder Support
317,602 of 320,872 sessions supported encoding
99.93% Decoder Support
269,639 of 269,818 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,872 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.31% 143,269 / 144,264 99.84% 19,713 / 19,745 — 97.54% 62,231 / 63,802 97.92% 7,549 / 7,709
SafariSafari
 — 99.94% 8,597 / 8,602 99.99% 31,236 / 31,240 — —
EdgeEdge
 99.78% 30,945 / 31,013 100.0% 405 / 405 — 99.05% 934 / 943 98.04% 50 / 51
FirefoxFirefox
 96.33% 9,352 / 9,708 100.0% 1,297 / 1,297 — 0.0% 0 / 34 98.91% 1,269 / 1,283

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,818 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,733 / 121,761 99.87% 15,974 / 15,995 — 99.99% 53,831 / 53,837 98.93% 6,454 / 6,524
SafariSafari
 — 99.93% 7,232 / 7,237 99.98% 25,670 / 25,674 — —
EdgeEdge
 100.0% 27,081 / 27,082 100.0% 353 / 353 — 100.0% 859 / 859 97.83% 45 / 46
FirefoxFirefox
 100.0% 7,914 / 7,914 100.0% 1,080 / 1,080 — 0.0% 0 / 26 99.15% 1,045 / 1,054