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Codec: avc1.420428

85.37% Encoder Support
53,443 of 62,598 sessions supported encoding
99.96% Decoder Support
11,929 of 11,934 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,598 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.7% 27,470 / 27,553 99.95% 4,270 / 4,272 — 99.73% 12,091 / 12,124 99.3% 1,564 / 1,575
SafariSafari
 — 2.35% 38 / 1,618 1.52% 106 / 6,990 — —
EdgeEdge
 100.0% 4,999 / 4,999 100.0% 48 / 48 — 100.0% 115 / 115 100.0% 13 / 13
FirefoxFirefox
 95.44% 2,134 / 2,236 100.0% 278 / 278 — — 98.95% 283 / 286

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,934 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,247 / 5,248 99.85% 657 / 658 — 100.0% 2,254 / 2,254 99.72% 351 / 352
SafariSafari
 — 100.0% 277 / 277 100.0% 1,426 / 1,426 — —
EdgeEdge
 100.0% 1,052 / 1,052 100.0% 11 / 11 — 100.0% 35 / 35 —
FirefoxFirefox
 100.0% 428 / 428 100.0% 44 / 44 — — 100.0% 51 / 51