Question

我将twilio v twilio-video与beta-2一起使用，依靠此仓库的主分支https://github.com/twilio/video-quickstart-js
我必须显示选择的媒体并将设备推入其中，但是当我尝试更新VideoDevice时出现错误

updateVideoDevice error TypeError: track must be a LocalAudioTrack, LocalVideoTrack, LocalDataTrack, or MediaStreamTrack
at Object.INVALID_TYPE (index.js:30952)
at Object.validateLocalTrack (index.js:31469)
at LocalParticipant.unpublishTrack (index.js:17047)
at index.js:17096
at Array.reduce (<anonymous>)
at LocalParticipant.unpublishTracks (index.js:17095)
at index.js:36056

我的updateVideoDevice函数如下所示

function updateVideoDevice(event) {
const select = event.target;
const localParticipant = room.localParticipant;
if (select.value !== '') {
    Video.createLocalVideoTrack({
        deviceId: { exact: select.value }
    }).then(function(localVideoTrack) {
        const tracks = Array.from(localParticipant.videoTracks.values());
        localParticipant.unpublishTracks(tracks);
        log(localParticipant.identity + " removed track: " + tracks[0].kind);
        detachTracks(tracks);

        localParticipant.publishTrack(localVideoTrack);
        log(localParticipant.identity + " added track: " + localVideoTrack.kind);
        const previewContainer = document.getElementById('local-media');
        attachTracks([localVideoTrack], previewContainer);
    })
    .catch(error => {
        console.error('updateVideoDevice error' ,error);
    });
}
}

任何人都可以解释我在做什么错吗？

Answer 1

这里是Twilio开发人员的传播者。

这似乎是Twilio Video JS v1和v2之间的重大变化。在v2文档中，调用localParticipant.videoTracks返回Map中的<Track.SID, LocalVideoTrackPublication>。在该地图上调用.values()将返回LocalVideoTrackPublication s的迭代器，然后使用Array.from将其转换为数组。

问题在于，您随后将LocalVideoTrackPublication的数组传递给localParticipant.unpublishTracks(tracks);会导致错误，因为unpublishTracks期望LocalTrack的数组不是{{1} } s。

您可以通过映射出版物并返回LocalVideoTrackPublication属性来解决此问题：

track

让我知道是否有帮助。

Twilio Video-切换媒体设备选项不起作用

1 个答案: