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Codec: avc1.4d040d

3.24% Encoder Support
69,692 of 2,149,740 sessions supported encoding
99.8% Decoder Support
2,094,420 of 2,098,534 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 1.3
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 768 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,740 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.01% 72 / 867,540 0.12% 116 / 100,488 — 0.03% 183 / 650,933 0.33% 144 / 43,875
SafariSafari
 — 1.53% 738 / 48,176 1.81% 3,953 / 218,484 — —
EdgeEdge
 0.0% 5 / 143,578 0.0% 0 / 1,454 — 0.0% 0 / 4,244 0.0% 0 / 677
FirefoxFirefox
 95.92% 51,052 / 53,225 99.95% 7,499 / 7,503 — 0.0% 0 / 115 97.95% 5,868 / 5,991

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,534 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,605 / 844,802 99.82% 96,667 / 96,842 — 99.64% 638,736 / 641,029 98.3% 41,945 / 42,669
SafariSafari
 — 99.83% 46,750 / 46,829 99.98% 212,737 / 212,786 — —
EdgeEdge
 99.99% 139,559 / 139,571 100.0% 1,416 / 1,416 — 100.0% 4,168 / 4,168 98.81% 664 / 672
FirefoxFirefox
 99.97% 51,551 / 51,566 99.96% 7,278 / 7,281 — 0.93% 1 / 107 98.45% 5,655 / 5,744