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Codec: avc1.421029

99.7% Encoder Support
319,791 of 320,746 sessions supported encoding
99.93% Decoder Support
269,306 of 269,484 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4.1
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,746 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.82% 143,974 / 144,228 99.9% 19,863 / 19,882 — 99.78% 63,168 / 63,310 98.94% 7,665 / 7,747
SafariSafari
 — 99.93% 8,598 / 8,604 100.0% 31,398 / 31,399 — —
EdgeEdge
 100.0% 30,965 / 30,965 100.0% 352 / 352 — 99.58% 959 / 963 100.0% 71 / 71
FirefoxFirefox
 96.11% 9,450 / 9,832 100.0% 1,279 / 1,279 — 0.0% 0 / 29 98.76% 1,277 / 1,293

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,484 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,607 / 121,638 99.88% 16,143 / 16,163 — 99.98% 53,401 / 53,413 99.09% 6,437 / 6,496
SafariSafari
 — 99.93% 7,247 / 7,252 100.0% 25,717 / 25,718 — —
EdgeEdge
 100.0% 26,943 / 26,943 100.0% 308 / 308 — 100.0% 882 / 882 100.0% 65 / 65
FirefoxFirefox
 100.0% 8,069 / 8,069 100.0% 1,048 / 1,048 — 0.0% 0 / 26 99.35% 1,066 / 1,073