Video not working in firefox

a... — Jul 22, 2016 03:18AM EDT

---

If i used rtmp then video does not play in the firefox.

Here is my Code:

jwplayer("myFirstPlayer").setup({
"preload" : true,
"aspectratio": "16:9",
"height": 500,
"width": "100%",
"file": "rtmp://s28b1emg43kzt.cloudfront.net/cfx/st/mp4:" + videoNewUrl,
"type": "rtmp",
"image": thumbUrl,
"primary": "flash",
});