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Codec: mp4a.40.29

87.47% Encoder Support
196,191 of 224,306 sessions supported encoding
94.27% Decoder Support
39,985 of 42,415 sessions supported decoding

VideoEncoder Support Matrix

Browser × Platform encoder support from 224,306 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.7% 98,382 / 98,677 99.77% 15,487 / 15,522 — 96.61% 41,985 / 43,458 48.73% 2,770 / 5,684
SafariSafari
 — 53.18% 3,114 / 5,856 60.06% 15,012 / 24,993 — —
EdgeEdge
 99.8% 17,854 / 17,889 100.0% 178 / 178 — 98.43% 377 / 383 0.0% 0 / 35
FirefoxFirefox
 0.03% 2 / 7,807 0.1% 1 / 1,003 — 0.0% 0 / 38 0.0% 0 / 1,042

VideoDecoder Support Matrix

Browser × Platform decoder support from 42,415 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 18,577 / 18,582 99.88% 2,421 / 2,424 — 100.0% 8,005 / 8,005 99.07% 1,390 / 1,403
SafariSafari
 — 55.83% 541 / 969 63.06% 3,194 / 5,065 — —
EdgeEdge
 100.0% 3,686 / 3,686 100.0% 29 / 29 — 100.0% 110 / 110 100.0% 13 / 13
FirefoxFirefox
 100.0% 1,466 / 1,466 100.0% 173 / 173 — — 100.0% 206 / 206