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Codec: avc1.421014

15.7% Encoder Support
337,442 of 2,149,835 sessions supported encoding
99.8% Decoder Support
2,094,574 of 2,098,717 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 2
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 2 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,835 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 245 / 866,272 0.17% 173 / 100,919 — 0.3% 1,966 / 650,568 0.9% 394 / 43,693
SafariSafari
 — 99.76% 48,237 / 48,353 99.96% 218,411 / 218,491 — —
EdgeEdge
 0.03% 40 / 144,019 0.07% 1 / 1,444 — 0.0% 0 / 4,268 0.14% 1 / 716
FirefoxFirefox
 95.99% 51,842 / 54,009 99.89% 7,466 / 7,474 — 0.0% 0 / 113 98.03% 5,960 / 6,080

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,717 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 843,590 / 843,775 99.79% 96,979 / 97,183 — 99.65% 638,411 / 640,628 98.25% 41,762 / 42,506
SafariSafari
 — 99.85% 46,909 / 46,980 99.97% 212,791 / 212,850 — —
EdgeEdge
 99.99% 140,021 / 140,030 100.0% 1,402 / 1,402 — 100.0% 4,182 / 4,182 98.72% 696 / 705
FirefoxFirefox
 99.97% 52,274 / 52,292 99.94% 7,237 / 7,241 — 0.97% 1 / 103 98.31% 5,743 / 5,842