因此，我尝试使用默认的chrome发送器应用为chromecast设置隐藏式字幕，根据文档，as seen here应该是可能的。
我不知道为什么我的代码不起作用。它几乎与提供的示例代码相同。
狙击手可能因为沙箱太小而无法使用，请在常规html页面中查看：
Click!
首先应该使用顶部按钮连接他们的chromecast，然后单击“加载视频”。
我的代码：
var suburl = 'https://cors-anywhere.herokuapp.com/brenopolanski.com/html5-video-webvtt-example/MIB2-subtitles-pt-BR.vtt';
var mediaurl = 'https://cors-anywhere.herokuapp.com/www.w3schools.com/html/mov_bbb.mp4';
var mediaInfo;
window['__onGCastApiAvailable'] = function(isAvailable) {
if (isAvailable) {
initializeCastApi();
}
};
initializeCastApi = function() {
cast.framework.CastContext.getInstance().setOptions({
receiverApplicationId:
chrome.cast.media.DEFAULT_MEDIA_RECEIVER_APP_ID
});
var englishSubtitle = new chrome.cast.media.Track(1, // track ID
chrome.cast.media.TrackType.TEXT);
englishSubtitle.trackContentId = suburl;
englishSubtitle.trackContentType = 'text/vtt';
englishSubtitle.subtype = chrome.cast.media.TextTrackType.SUBTITLES;
englishSubtitle.name = 'English Subtitles';
englishSubtitle.language = 'en-US';
englishSubtitle.customData = null;
mediaInfo = new chrome.cast.media.MediaInfo(mediaurl);
var textTrackStyle = new chrome.cast.media.TextTrackStyle();
textTrackStyle.foregroundColor = '#80FF0000';
mediaInfo.contentType = 'video/mp4';
mediaInfo.metadata = new chrome.cast.media.GenericMediaMetadata();
mediaInfo.customData = null;
mediaInfo.streamType = chrome.cast.media.StreamType.BUFFERED;
mediaInfo.textTrackStyle = textTrackStyle
mediaInfo.duration = null;
mediaInfo.tracks = [englishSubtitle];
mediaInfo.activeTrackIds = [1];
};
function loadVideo() {
var castSession = cast.framework.CastContext.getInstance().getCurrentSession();
var request = new chrome.cast.media.LoadRequest(mediaInfo);
castSession.loadMedia(request).then(
function() { console.log('Load succeed'); },
function(errorCode) { console.log('Error code: ' + errorCode); });
}.cast-button, .load-button {
max-width: 50px;
max-height: 50px;
}<!DOCTYPE html>
<html>
<head>
<title>Sample chromcast</title>
</head>
<body>
<div class="cast-button">
<google-cast-launcher></google-cast-launcher>
</div>
<button class="load-button" onclick="loadVideo()"> Load video </button>
<script src="https://www.gstatic.com/cv/js/sender/v1/cast_sender.js?loadCastFramework=1"></script>
</body>
</html>最佳答案
经过大量搜索之后，我仍然无法查明确切的问题。但是，我偶然发现了支持字幕的ChromeCast SDK的惊人包装器：https://github.com/Fenny/ChromecastJS/
包括此演示：https://fenny.github.io/ChromecastJS/demo/index.html
希望这可以帮助别人！