Handlerbars.js doesn't have proper comparison operators. Also, accessing array indexes is weird.

handlebars_comparison.js

In your init:

/* Handlebars doesn't have the basics. */
Handlebars.registerHelper('ifEq', function(v1, v2, options) {
    if(v1 == v2) {
        return options.fn(this);
    }
    return options.inverse(this);
});

In the template: 

{{! Undocumented: to access an array element by index in Handlebars,
    use dot syntax instead of brackets. }}
{{#ifEq this.incident.media.0.media_type 'Video'}}
    <video id="incident-video" class="video-js vjs-default-skin" autoplay
        preload="auto" width="640" height="264" autoplay
        data-setup='{"techOrder": ["html5","flash"]}'>

        <source id="videoSource1" 
            src="{{ this.incident.media.0.file_location }}"
            type="video/mp4"
             />
    </video>
{{/ifEq}}

wat?