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Codec: avc1.42040c

3.96% Encoder Support
12,677 of 320,085 sessions supported encoding
99.93% Decoder Support
268,826 of 269,018 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 320,085 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.02% 36 / 144,069 0.16% 31 / 19,570 — 0.12% 73 / 63,392 0.84% 65 / 7,756
SafariSafari
 — 2.02% 174 / 8,631 1.42% 440 / 31,060 — —
EdgeEdge
 0.03% 10 / 31,155 0.0% 0 / 355 — 0.0% 0 / 1,021 0.0% 0 / 55
FirefoxFirefox
 96.11% 9,217 / 9,590 100.0% 1,307 / 1,307 — 0.0% 0 / 35 98.1% 1,292 / 1,317

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,018 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 121,492 / 121,536 99.87% 15,869 / 15,890 — 99.99% 53,473 / 53,481 99.04% 6,487 / 6,550
SafariSafari
 — 99.92% 7,245 / 7,251 99.98% 25,413 / 25,417 — —
EdgeEdge
 100.0% 27,162 / 27,163 100.0% 312 / 312 — 100.0% 938 / 938 100.0% 49 / 49
FirefoxFirefox
 100.0% 7,871 / 7,871 100.0% 1,071 / 1,071 — 0.0% 0 / 25 99.45% 1,077 / 1,083