A demo implementation of the (new) MediaStream Recording API.

Works on:

• Firefox 30+
• Chrome 47,48 (video only, enable experimental Web Platform features at chrome://flags)
• Chrome 49+
• Safari on macOS 14.0.2+
• Safari on iOS 14.3+

Containers & codecs:

• Safari on iOS 14.3+ : mp4, H264, Stereo AAC @ 44.1kHz or 48kHz
• Safari on macOS 18.4+ : mp4/webm, H264/HEVC/AV1, Stereo AAC @ 48kHz
• Safari on macOS 14.0.2+ : mp4, H264, Stereo AAC @ 48kHz
• Chrome 136+ : webm/mp4, VP8/VP9/H264/AV1/HEVC, Opus @ 48kHz
• Chrome 126+ : webm/mp4, VP8/VP9/H264/AV1, Opus @ 48kHz
• Chrome 52+ : webm, VP8/VP9/H.264, Opus @ 48kHz
• Chrome 49+ : webm, VP8/VP9, Opus @ 48kHz
• Firefox 30+: webm,VP8, Vorbis/Opus @ 44.1 kHz

Issues:

• Pause does not stop audio recording on Chrome 49,50

Links:

• Live demo of this code

• Article: HTML5’s Media Recorder API in Action on Chrome and Firefox

• W3C Draft (Latest published version)

• Media Recorder API at 65% penetration thanks to Chrome