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Codec: avc1.420033

99.59% Encoder Support
62,669 of 62,929 sessions supported encoding
99.93% Decoder Support
11,831 of 11,839 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.1
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,929 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.72% 27,527 / 27,603 99.95% 4,354 / 4,356 — 99.73% 12,233 / 12,266 98.57% 1,521 / 1,543
SafariSafari
 — 100.0% 1,657 / 1,657 100.0% 6,955 / 6,955 — —
EdgeEdge
 99.98% 5,083 / 5,084 100.0% 47 / 47 — 100.0% 118 / 118 92.31% 12 / 13
FirefoxFirefox
 95.14% 2,132 / 2,241 100.0% 264 / 264 — 0.0% 0 / 14 99.66% 293 / 294

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,839 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,279 / 5,281 100.0% 669 / 669 — 100.0% 2,199 / 2,199 98.66% 368 / 373
SafariSafari
 — 100.0% 283 / 283 100.0% 1,365 / 1,365 — —
EdgeEdge
 100.0% 1,048 / 1,048 — — 100.0% 31 / 31 —
FirefoxFirefox
 100.0% 399 / 399 100.0% 51 / 51 — — 100.0% 58 / 58