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Codec: avc1.421434

85.2% Encoder Support
53,380 of 62,656 sessions supported encoding
99.95% Decoder Support
11,879 of 11,885 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.2
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,656 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.76% 27,441 / 27,507 99.98% 4,293 / 4,294 — 99.7% 12,138 / 12,174 99.0% 1,586 / 1,602
SafariSafari
 — 2.69% 46 / 1,710 1.67% 118 / 7,053 — —
EdgeEdge
 100.0% 4,940 / 4,940 100.0% 56 / 56 — 100.0% 100 / 100 —
FirefoxFirefox
 95.41% 2,081 / 2,181 100.0% 265 / 265 — — 99.64% 276 / 277

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,885 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,295 / 5,297 100.0% 678 / 678 — 100.0% 2,233 / 2,233 99.74% 383 / 384
SafariSafari
 — 100.0% 279 / 279 100.0% 1,439 / 1,439 — —
EdgeEdge
 100.0% 1,001 / 1,001 — — 100.0% 24 / 24 —
FirefoxFirefox
 100.0% 383 / 383 100.0% 44 / 44 — — 100.0% 43 / 43