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Codec: avc1.420015

16.48% Encoder Support
52,880 of 320,853 sessions supported encoding
99.93% Decoder Support
269,338 of 269,517 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 2.1
Maximum Resolution SD (512×480)
Maximum Bitrate 4 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,853 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.02% 36 / 144,361 0.17% 34 / 19,775 — 0.13% 81 / 63,426 0.81% 62 / 7,682
SafariSafari
 — 99.82% 8,525 / 8,540 99.94% 31,306 / 31,324 — —
EdgeEdge
 0.03% 8 / 30,925 0.0% 0 / 364 — 0.0% 0 / 1,024 0.0% 0 / 67
FirefoxFirefox
 95.97% 9,493 / 9,892 100.0% 1,326 / 1,326 — 0.0% 0 / 33 98.09% 1,283 / 1,308

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,517 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,777 / 121,813 99.89% 16,069 / 16,086 — 99.98% 53,431 / 53,440 99.11% 6,448 / 6,506
SafariSafari
 — 99.87% 7,176 / 7,185 99.98% 25,676 / 25,680 — —
EdgeEdge
 100.0% 26,856 / 26,856 100.0% 309 / 309 — 100.0% 940 / 940 98.25% 56 / 57
FirefoxFirefox
 100.0% 8,100 / 8,100 100.0% 1,088 / 1,088 — 0.0% 0 / 26 99.52% 1,044 / 1,049