Video API

Defining an Enhanced API for Video

Abstract

The HTML5 specification introduces the <audio> and <video> media elements, and with them the opportunity to dramatically change the way we integrate media on the web. The current HTML5 media API provides ways to play and get limited information about audio and video, but gives no way to programatically access or create such media. We present a new extension to this API, which allows web developers to read and write raw audio data.

Authors

• Anna Sobiepanek(@annasob)
• Scott Downe (blog)
• Daniel Hodgin (@dhhodgin)
• Nick Cammarata

Other Contributors

• Brett Gaylor

Status

This is a work in progress.

XML Grammar

We are trying to derived the best possible structure for all of the information needed to be stored about the video. We also do not want to repeat information, here is what we identified would be repeating data (we called this the manifest):

Source
- ID
- Name of Work
- Copyright Holder
- License (free form text)
- License (machine readable URL)

Person
- URLs?? (twitter, facebook, flickr) and a Type
- Personal Info
- name (fullname)
- ID
- Title (job description)
- Salutation
- Role

Place
- Geotag (single)
- Type (building)
- URLs, type
- Name
- ID

Object
- ID
- Name
- URLS, Type

Here is what we cam up with for tags:

Text
-(for times when you want really fine control over placement of the text)
- x, y postion
- target div where it's going to get put
- class - font (css) -- class, css transitions (state and state and duration)
- effects - space separated

Subtitles
-Always at the bottom

Lower-Third Text (need a name) 
- would need a default duration, but user configurable, and overridable
- in="x"
- Show
- Defaults (3 seconds)
- Person's Salutation + Name\n Title
- lower thirds

Subtitle
- text to display
- in="x" and out="y"
- position in lower area
Transctipt
- original language
- language its in 
- name of person who is talking
- imported from external file 
 
Credits
-<credit role="…" person="…">
-<credit role="…" person="…">

Attribution
- Name of Work, Copyright holder, License, License URL
- in="x" and out="x"
- lower third
- <attribution title="The Mona Lisa" by="Leonardo" license=">
- each

Caption
- (x,y) and (width,height)
- class (background, colour, etc.)
- text
- display:none until we show it
- in="x" and out="y"

- a

we put on the page - Thought Bubble - cloud with dots above the head Speech Bubble - straight lines like youtube Pointer - rectangle with arrow pointing to something Picture - specify a div for where to put the image - img src Data/Content - something to load from external and show - in="x" and out="y" - src="…." - target div to put it in Audio - src - in="x" and out="y" Change - id of new div where to put it - new size -- have it adopt the size of the div it is going into Map - in="x" and out="y" (if blank stay untill something replaces it) - maybe specify map backend (google, open street map, bing) - target div to put it in - placeId linked back to <place>