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Codec: avc1.42103c

87.24% Encoder Support
279,663 of 320,581 sessions supported encoding
87.77% Decoder Support
236,583 of 269,540 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 6
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,581 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.81% 143,628 / 143,901 99.78% 19,636 / 19,680 — 99.7% 63,416 / 63,608 98.14% 7,712 / 7,858
SafariSafari
 — 2.01% 173 / 8,625 1.56% 487 / 31,160 — —
EdgeEdge
 99.97% 31,091 / 31,100 99.73% 368 / 369 — 99.37% 944 / 950 98.41% 62 / 63
FirefoxFirefox
 96.11% 9,460 / 9,843 100.0% 1,280 / 1,280 — 0.0% 0 / 38 98.87% 1,313 / 1,328

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,540 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 121,442 / 121,505 99.76% 15,926 / 15,965 — 99.88% 53,653 / 53,720 98.35% 6,508 / 6,617
SafariSafari
 — 1.93% 140 / 7,272 1.5% 384 / 25,557 — —
EdgeEdge
 99.97% 27,057 / 27,066 100.0% 325 / 325 — 100.0% 880 / 880 98.18% 54 / 55
FirefoxFirefox
 99.95% 8,024 / 8,028 99.9% 1,043 / 1,044 — 0.0% 0 / 29 99.45% 1,078 / 1,084