除非同时存在音频和视频流，否则 Kurento WebRTC 不会录制

问题描述

基本上是subj.我正在使用用于 JS 的 Kurento-Utils.该主题已经针对较低级别的工作进行了讨论，但是在项目的这一点上，切换方法为时已晚:(

Basically subj. I am using Kurento-Utils for JS. That topic has been discussed for the case of lower-level work, but at this point in project, it is too late to go switch approach :(

当我流式传输带有音频的网络摄像头时，它会很好地记录到 .webm 文件中.但是，我如何仅流式传输音频或视频?尝试导致文件大小为 0 且没有错误消息.

When i stream webcam with audio it is recorded nicely into a .webm file. But, how do i stream audio only, or video only? An attempt results in file being of 0 size with no error messages.

是否有任何用于演示该用例的 Kurento-utils/js 示例代码?

Is there any sample code for Kurento-utils/js which would demonstrate that use case?

推荐答案

在实例化记录器和连接元素时，您需要提供适当的MediaType.

You need to provide the appropriate MediaType when instantiating the recorder, and connecting the elements.

pipeline.create('RecorderEndpoint', {uri: filepath,mediaProfile:'WEBM_AUDIO_ONLY'},
            function (error, recorder) {
                webrtcEp.connect(recorder,'AUDIO', function (err) {
                    recorder.record();
                    console.log("recording started ...");
                });
            });

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