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Re: [mediacapture-record] Handle the case of audio/video track configuration changes (#188)

From: guest271314 via GitHub <sysbot+gh@w3.org>
Date: Sat, 21 Sep 2019 20:56:32 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-533829590-1569099390-sysbot+gh@w3.org>
For audio input to `MediaRecorder` `audio_sampling_frequency` the value set by Chromium is always `48000`, for Mozilla Firefox and Nightly the value is always `44100`. 

When 

`const audioContext = new AudioContext({sampleRate: 44100})`

is used at Chromium the value set at the resulting WebM file is still always `48000` (https://github.com/WebAudio/web-audio-api/issues/300; https://bugs.chromium.org/p/chromium/issues/detail?id=432248). AFAICT there is no current means to change that setting at all programmatically (https://www.reddit.com/r/mkvtoolnix/comments/cdi824/mkvmerge_prints_error_when_merging_webm_files/etwhugs/).

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