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Codec: avc1.4d040b

4.59% Encoder Support
2,902 of 63,211 sessions supported encoding
99.93% Decoder Support
11,992 of 12,001 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 1.1
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 192 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,211 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.02% 6 / 27,777 0.14% 6 / 4,282 — 0.02% 2 / 12,250 0.38% 6 / 1,587
SafariSafari
 — 2.37% 38 / 1,603 1.52% 108 / 7,111 — —
EdgeEdge
 0.0% 0 / 5,128 0.0% 0 / 49 — 0.0% 0 / 106 0.0% 0 / 10
FirefoxFirefox
 95.56% 2,153 / 2,253 100.0% 273 / 273 — 0.0% 0 / 10 98.66% 295 / 299

VideoDecoder Support Matrix

Browser × Platform decoder support from 12,001 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,173 / 5,174 100.0% 685 / 685 — 100.0% 2,292 / 2,292 98.72% 386 / 391
SafariSafari
 — 100.0% 268 / 268 100.0% 1,448 / 1,448 — —
EdgeEdge
 100.0% 1,087 / 1,087 — — 100.0% 31 / 31 —
FirefoxFirefox
 100.0% 432 / 432 100.0% 53 / 53 — — 100.0% 55 / 55