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Codec: avc1.4d040b

3.97% Encoder Support
12,755 of 321,244 sessions supported encoding
99.94% Decoder Support
269,838 of 270,011 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 321,244 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.01% 17 / 144,561 0.12% 23 / 19,650 — 0.01% 9 / 63,647 0.35% 27 / 7,715
SafariSafari
 — 2.03% 172 / 8,482 1.38% 434 / 31,482 — —
EdgeEdge
 0.01% 2 / 31,052 0.0% 0 / 370 — 0.0% 0 / 962 0.0% 0 / 52
FirefoxFirefox
 95.86% 9,447 / 9,855 100.0% 1,340 / 1,340 — 0.0% 0 / 32 97.75% 1,258 / 1,287

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,011 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,924 / 121,957 99.89% 16,035 / 16,053 — 99.98% 53,677 / 53,689 99.08% 6,459 / 6,519
SafariSafari
 — 99.92% 7,134 / 7,140 99.99% 25,801 / 25,804 — —
EdgeEdge
 100.0% 27,011 / 27,011 100.0% 324 / 324 — 100.0% 887 / 887 100.0% 46 / 46
FirefoxFirefox
 100.0% 8,034 / 8,034 100.0% 1,120 / 1,120 — 0.0% 0 / 24 99.23% 1,035 / 1,043