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The chromecast documentation for Chrome is terrible, so to save other's some time, here is the straigt-forward way to stream something quickly and with subtitles
<!DOCTYPE html>
<html lang="en">
<head>
<script type="text/javascript" src="https://www.gstatic.com/cv/js/sender/v1/cast_sender.js"></script>
</head>
<body>
Hello World</br>
<a onclick="castNow()" href="#">Cast!</a></br>
<a onclick="loadNow()" href="#">LOAD!</a>
<!--<script src="/assets/js/cast.js"></script>-->
<script>
var cast = {}
var castNow = function() {
console.log('casting!')
var sessionRequest = new chrome.cast.SessionRequest(chrome.cast.media.DEFAULT_MEDIA_RECEIVER_APP_ID);
chrome.cast.requestSession(function onRequestSessionSuccess(session) {
console.log('Session success', session)
cast.session = session
}, function onLaunchError(er) {
console.log('onLaunchError', er)
}, sessionRequest);
setTimeout(function() {
var sessionRequest = new chrome.cast.SessionRequest(chrome.cast.media.DEFAULT_MEDIA_RECEIVER_APP_ID);
chrome.cast.requestSession(function onRequestSessionSuccess(session) {
console.log('Session success', session)
cast.session = session
}, function onLaunchError(er) {
console.log('onLaunchError', er)
}, sessionRequest);
}, 1000)
}
var loadNow = function() {
var englishSubtitle = new chrome.cast.media.Track(1, // track ID
chrome.cast.media.TrackType.TEXT);
englishSubtitle.trackContentId = 'https://carlosguerrero.com/captions_styled.vtt';
englishSubtitle.trackContentType = 'text/vtt';
englishSubtitle.subtype = chrome.cast.media.TextTrackType.SUBTITLES;
englishSubtitle.name = 'English Subtitles';
englishSubtitle.language = 'en-US';
englishSubtitle.customData = null;
console.log('LoadNow, session:', cast.session)
var mediaInfo = new chrome.cast.media.MediaInfo('http://commondatastorage.googleapis.com/gtv-videos-bucket/big_buck_bunny_1080p.mp4', 'video/mp4');
mediaInfo.tracks = [englishSubtitle]
mediaInfo.activeTrackIds = [1]
request = new chrome.cast.media.LoadRequest(mediaInfo);
cast.session.loadMedia(request,
onMediaDiscovered.bind(this, 'loadMedia'),
function(er) {
console.log('onMediaError', er)
});
function onMediaDiscovered(how, media) {
console.log('got media!', media)
cast.currentMedia = media;
var activeTrackIds = [1];
var tracksInfoRequest = new chrome.cast.media.EditTracksInfoRequest(activeTrackIds);
media.editTracksInfo(tracksInfoRequest, function succCB(){console.log('success changing trackIDs!')}, function errorCallback(){
console.log('Error CB!')
});
}
}
initializeCastApi = function() {
console.log('initializing cast api')
var sessionRequest = new chrome.cast.SessionRequest(chrome.cast.media.DEFAULT_MEDIA_RECEIVER_APP_ID);
var apiConfig = new chrome.cast.ApiConfig(sessionRequest,
function(session) {
console.log('got session', session)
cast.session = session
},
function receiverListener(e) {
if (e === chrome.cast.ReceiverAvailability.AVAILABLE) {
console.log('receiver is available :)')
}
})
chrome.cast.initialize(apiConfig, function() {
console.log('got initSuccess')
},
function(gotError) {
console.log('gotError', gotError)
});
};
window.onload = function() {
window['__onGCastApiAvailable'] = function(loaded, errorInfo) {
console.log('in __onGCastApiAvailable, loaded:', loaded)
if (loaded) {
initializeCastApi()
}
};
}
</script>
</body>
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