I am trying to add a YouTube embed link on to a web page I did not originally develop (and therefore not that familiar with it) with lots of different things already going on with it (i.e. many other js calls, etc) - so in other words for a novice JavaScript debugger like me it is pretty tricky to identify things.
For some reason, the page changes any YouTube embed link to a near full screen width video. I want it to simply run as per the code I am pasting in, which for this example is:
<iframe src="//www.youtube.com/embed/tGvHNNOLnCk?rel=0" height="315" width="560" allowfullscreen="" frameborder="0"></iframe>
I can see the code it swaps it out with is:
<div class="fluid-width-video-wrapper" style="padding-top: 56.25%;"><iframe src="//www.youtube.com/embed/tGvHNNOLnCk?rel=0" allowfullscreen="" frameborder="0" id="fitvid802730"></iframe></div>
When I turn JavaScript off, the embedded video displays at the right size, and uses the original code - so it's clear to me it has something to do with JavaScript.
Bearing in mind I am new to JavaScript debugging, What is the easiest way to somehow cleanly disrupt any operations on this kind of code so there are no manipulations done to the youtube embed code?
I am using Google Chrome dev tools.