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Codec: avc1.4d040c

3.92% Encoder Support
12,572 of 320,692 sessions supported encoding
99.93% Decoder Support
269,438 of 269,618 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 1.2
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 384 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,692 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.01% 14 / 144,218 0.09% 17 / 19,571 — 0.01% 8 / 63,833 0.39% 30 / 7,732
SafariSafari
 — 1.97% 170 / 8,646 1.4% 439 / 31,314 — —
EdgeEdge
 0.0% 1 / 30,821 0.0% 0 / 374 — 0.0% 0 / 1,027 0.0% 0 / 71
FirefoxFirefox
 96.18% 9,228 / 9,595 99.93% 1,340 / 1,341 — 0.0% 0 / 34 98.13% 1,309 / 1,334

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,618 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,831 / 121,866 99.92% 15,921 / 15,933 — 99.99% 53,737 / 53,744 99.08% 6,492 / 6,552
SafariSafari
 — 99.92% 7,262 / 7,268 99.98% 25,644 / 25,649 — —
EdgeEdge
 100.0% 26,822 / 26,823 100.0% 329 / 329 — 100.0% 950 / 950 98.48% 65 / 66
FirefoxFirefox
 99.97% 7,814 / 7,816 100.0% 1,098 / 1,098 — 0.0% 0 / 27 99.18% 1,089 / 1,098