← Back to Codec Support Table

Codec: avc1.421420

87.34% Encoder Support
1,875,515 of 2,147,333 sessions supported encoding
99.8% Decoder Support
2,091,976 of 2,096,145 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 3.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,147,333 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 866,760 / 867,390 99.79% 100,002 / 100,213 — 99.51% 646,185 / 649,369 98.04% 42,718 / 43,573
SafariSafari
 — 1.49% 714 / 48,045 1.81% 3,946 / 218,164 — —
EdgeEdge
 99.99% 143,437 / 143,447 99.93% 1,510 / 1,511 — 99.77% 4,298 / 4,308 99.1% 657 / 663
FirefoxFirefox
 96.01% 51,375 / 53,509 99.97% 7,491 / 7,493 — 0.0% 0 / 124 99.1% 5,932 / 5,986

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,096,145 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,712 / 844,919 99.78% 96,291 / 96,501 — 99.65% 637,133 / 639,369 98.32% 41,616 / 42,329
SafariSafari
 — 99.83% 46,597 / 46,676 99.98% 212,436 / 212,482 — —
EdgeEdge
 99.99% 139,506 / 139,516 100.0% 1,471 / 1,471 — 100.0% 4,226 / 4,226 99.24% 650 / 655
FirefoxFirefox
 99.96% 51,740 / 51,761 99.94% 7,244 / 7,248 — 0.0% 0 / 118 98.27% 5,630 / 5,729