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Codec: avc1.42040c

3.35% Encoder Support
71,966 of 2,147,401 sessions supported encoding
99.8% Decoder Support
2,092,231 of 2,096,334 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,147,401 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 227 / 866,576 0.15% 148 / 100,542 — 0.3% 1,923 / 648,791 0.93% 408 / 44,085
SafariSafari
 — 1.59% 762 / 48,072 1.84% 4,022 / 218,732 — —
EdgeEdge
 0.03% 40 / 143,974 0.0% 0 / 1,437 — 0.0% 0 / 4,340 0.29% 2 / 683
FirefoxFirefox
 95.9% 50,987 / 53,165 99.93% 7,326 / 7,331 — 0.0% 0 / 117 97.99% 5,935 / 6,057

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,096,334 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 843,835 / 844,043 99.81% 96,674 / 96,862 — 99.65% 636,655 / 638,880 98.3% 42,152 / 42,879
SafariSafari
 — 99.82% 46,610 / 46,692 99.98% 213,041 / 213,089 — —
EdgeEdge
 100.0% 139,979 / 139,982 100.0% 1,394 / 1,394 — 100.0% 4,257 / 4,257 98.97% 670 / 677
FirefoxFirefox
 99.97% 51,431 / 51,446 99.97% 7,093 / 7,095 — 0.93% 1 / 107 98.44% 5,732 / 5,823