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Codec: avc1.42040b

3.95% Encoder Support
12,655 of 320,373 sessions supported encoding
99.93% Decoder Support
269,279 of 269,457 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,373 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 41 / 143,984 0.13% 25 / 19,739 — 0.12% 79 / 63,525 0.83% 65 / 7,875
SafariSafari
 — 2.2% 186 / 8,466 1.43% 448 / 31,374 — —
EdgeEdge
 0.02% 6 / 31,011 0.0% 0 / 377 — 0.0% 0 / 957 0.0% 0 / 61
FirefoxFirefox
 95.91% 9,151 / 9,541 100.0% 1,358 / 1,358 — 0.0% 0 / 38 98.28% 1,254 / 1,276

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,457 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,615 / 121,645 99.91% 16,013 / 16,028 — 99.99% 53,660 / 53,665 99.04% 6,628 / 6,692
SafariSafari
 — 99.92% 7,082 / 7,088 99.98% 25,700 / 25,704 — —
EdgeEdge
 100.0% 27,053 / 27,053 100.0% 322 / 322 — 100.0% 882 / 882 98.15% 53 / 54
FirefoxFirefox
 99.99% 7,736 / 7,737 100.0% 1,117 / 1,117 — 0.0% 0 / 28 99.43% 1,040 / 1,046