I am trying to stream video attachment from CouchDB using nano middleware in NodeJS. Video is received on the browser. I do not know how I should stream it on client and how to display it in HTML Tag.
Here is my NodeJS code to read attachment from CouchDB which I found from here:
if (req.headers.range) {
var stream = db.attachment.get(docid, docname, {Range: req.headers.range});
stream.on('response', function(response) {
var start = req.headers.range.replace(/bytes=/, "").split("-")[0];
var end = response.headers['content-length'];
res.writeHead(206, {
'ETag': response.headers.etag,
'Content-Range': 'bytes ' + start + "-" + (end - 1) + '/' + end,
'Accept-Ranges': 'bytes',
'Content-Length': end - start,
'Content-Type': response.headers['content-type']
});
});
} else {
stream = db.attachment.get(docid, docname);
}
stream.pipe(res);
stream.on('end', function() {
res.end();
});
On the client side my ajax call looks like this :
jQuery.ajax({
url: '/getvideoattachment/?id=' + this.id + "&name=" + videoname,
contentType: 'video/webm',
type: 'GET',
headers : { "Range" : 'bytes=0-3200' },
processData : false,
success: function(content) {
var oMyBlob = new Blob([content], { "type" : "video\/webm" });
var docURL = window.URL.createObjectURL(oMyBlob);
var elVideo = document.getElementById("videoid" );
elVideo.addEventListener("load", function (evt) { window.URL.revokeObjectURL(docURL); });
elVideo.setAttribute("src", docURL);
},
error : function(content)
{
Em.Logger.info('Model:', this.id, 'has no image', err);
return '';
}
});
In HTML Video tag is like this :
<video controls id="videoid" >
<source src="" type="video/webm" />
</video>
I am not sure if Blob is the right way to stream video to Video tag. How should I append the streams to the video tag?
Edit :
You are right brianchirls. It works! I have set the video URL. But what I get in the video tag is this :
<video controls="" id="videoa" class="visible" data-bindattr-7="7">
<source src="/getvideoattachment/?id=a26de29ded4e33ad47205187f4000f46&name=c.webm" data-bindattr-8="8" type="video/webm">
</video>
But when I click on play it does not play the video. But when I click on the link from the inspect element it plays the video in new browser window.
This solution is almost there.
@brianchirls answer has helped.
By changing the src attribute of video tag rather than source tag started the video streaming.
Thanks!