Find the mime type of a given source string if possible. Uses the player source cache.

Get the mimetype of a given src url if possible

our implementation of an innerHTML descriptor for browsers that do not have one.

our implementation of a src descriptor for browsers that do not have one

Construct an rgba color from a given hex color code.

Patches browser internal functions so that we can tell synchronously if a <source> was appended to the media element. For some reason this causes a sourceset if the the media element is ready and has no source. This happens when:

• The page has just loaded and the media element does not have a source.
• The media element was emptied of all sources, then load() was called.

It does this by patching the following functions/properties when they are supported:

• append() - can be used to add a <source> element to the media element
• appendChild() - can be used to add a <source> element to the media element
• insertAdjacentHTML() - can be used to add a <source> element to the media element
• innerHTML - can be used to add a <source> element to the media element

Get a property descriptor given a list of priorities and the property to get.

Add a function hook to a specific videojs lifecycle.

Add a function hook that will only run once to a specific videojs lifecycle.

Get a list of hooks for a specific lifecycle

Decide whether an element is actually disabled or not.

Decide whether the element is being rendered or not.

1. If an element has the style as "visibility: hidden | collapse" or "display: none", it is not being rendered.
2. If an element has the style as "opacity: 0", it is not being rendered.(that is, invisible).
3. If width and height of an element are explicitly set to 0, it is not being rendered.
4. If a parent element is hidden, an element itself is not being rendered. (CSS visibility property and display property are inherited.)

Decide whether the element is expressly inert or not.

Returns whether an object is Promise-like (i.e. has a then method).

Determine if the element is visible for the user or not.

1. If an element sum of its offsetWidth, offsetHeight, height and width is less than 1 is not visible.
2. If elementCenter.x is less than is not visible.
3. If elementCenter.x is more than the document's width is not visible.
4. If elementCenter.y is less than 0 is not visible.
5. If elementCenter.y is the document's height is not visible.

Decide the style property of this element is specified whether it's visible or not.

Remove a hook from a specific videojs lifecycle.

setup sourceset handling on the Html5 tech. This function patches the following element properties/functions:

• src - to determine when src is set
• setAttribute() - to determine when src is set
• load() - this re-triggers the source selection algorithm, and can cause a sourceset.

If there is no source when we are adding sourceset support or during a load() we also patch the functions listed in firstSourceWatch.

Silence a Promise-like object.

This is useful for avoiding non-harmful, but potentially confusing "uncaught play promise" rejection error messages.

This function is used to fire a sourceset when there is something similar to mediaEl.load() being called. It will try to find the source via the src attribute and then the <source> elements. It will then fire sourceset with the source that was found or empty string if we cannot know. If it cannot find a source then sourceset will not be fired.

An object containing an error type, as well as other information regarding the error.

A Custom DOM event.

All event listeners should follow the following format.

An object that contains Video.js version.

A callback to be called if and when the component is ready. this will be the Component instance.

An Object containing a structure like: {src: 'url', type: 'mimetype'} or string that just contains the src url alone.

• var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'}; var SourceString = 'http://example.com/some-video.mp4';