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Codec: avc1.4d003d

86.5% Encoder Support
278,314 of 321,748 sessions supported encoding
87.75% Decoder Support
237,269 of 270,399 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 6.1
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 480 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,748 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.29% 143,832 / 144,866 99.78% 19,865 / 19,908 — 97.47% 61,791 / 63,396 97.62% 7,556 / 7,740
SafariSafari
 — 1.88% 164 / 8,733 1.55% 484 / 31,292 — —
EdgeEdge
 99.83% 31,097 / 31,150 100.0% 408 / 408 — 99.59% 971 / 975 98.33% 59 / 60
FirefoxFirefox
 96.09% 9,353 / 9,734 100.0% 1,327 / 1,327 — 0.0% 0 / 29 98.87% 1,310 / 1,325

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,399 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 122,115 / 122,173 99.76% 16,131 / 16,170 — 99.85% 53,432 / 53,513 98.52% 6,440 / 6,537
SafariSafari
 — 1.79% 132 / 7,367 1.49% 383 / 25,627 — —
EdgeEdge
 99.97% 27,143 / 27,151 100.0% 364 / 364 — 100.0% 897 / 897 100.0% 56 / 56
FirefoxFirefox
 99.92% 7,946 / 7,952 100.0% 1,097 / 1,097 — 0.0% 0 / 22 99.17% 1,076 / 1,085