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Codec: avc1.4d103d

84.74% Encoder Support
53,394 of 63,011 sessions supported encoding
85.39% Decoder Support
10,187 of 11,930 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 63,011 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.21% 27,595 / 27,816 99.84% 4,372 / 4,379 — 97.37% 11,854 / 12,174 97.69% 1,524 / 1,560
SafariSafari
 — 2.27% 37 / 1,631 1.49% 104 / 6,976 — —
EdgeEdge
 99.8% 5,062 / 5,072 100.0% 50 / 50 — 98.18% 108 / 110 90.0% 9 / 10
FirefoxFirefox
 95.8% 2,077 / 2,168 100.0% 284 / 284 — — 100.0% 281 / 281

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,930 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.94% 5,268 / 5,271 99.86% 702 / 703 — 99.73% 2,211 / 2,217 99.47% 372 / 374
SafariSafari
 — 2.45% 7 / 286 2.13% 30 / 1,410 — —
EdgeEdge
 100.0% 1,040 / 1,040 100.0% 12 / 12 — 100.0% 36 / 36 —
FirefoxFirefox
 100.0% 389 / 389 100.0% 51 / 51 — — 100.0% 58 / 58