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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Sustaining Presentation</title>
<meta name="description" content="#amia15 presentation">
<meta name="author" content="@kellyhaydon @dericed">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/sky.css" id="theme">
<!-- Code syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h2>Sustaining Consistent Video Presentation</h2>
<h3><a href="https://twitter.com/search?q=%23amia15">#amia15</a> 2015-11-21</h3>
<p>
<small>By <a href="http://twitter.com/BAVCPreserve">Kelly Haydon</a> / <a href="http://twitter.com/dericed">Dave Rice</a></small>
</p>
<aside class="notes">
Instead of video decks and projectors, archivists increasingly rely on software to render an authentic presentation of audiovisual content. However, the same file may appear differently from one player to another with discrepancies in significant characteristics such as color, contrast, aspect ratio, or even duration. This presentation investigates aspects of the design and decisions within digital media that impact the consistency of video presentation from one playback device to another. Archival strategies such as migration, emulation, and normalization are evaluated according to their potential impact on presentation consistency. Although the technological diversity and complexity of codecs, containers and implementations within digital video collections challenge one-sized presentation solutions; the panel will go behind-the-scenes within playback software. Details and qualities about digital video that are often unseen shall be scrutinized in order to provide more technical control over digital content and better understanding of the challenges involved in sustaining consistent video presentation.
</aside>
</section>
<section>
<h2>Guess What?</h2>
<p>
Video sometimes looks different in different players.
</p>
</section>
<section>
<section>
<h2>Approaches and Attempts</h2>
</section>
<section>
<h2>Emulation</h2>
<p>Sustaining video presentations through emulation requires maintaining a player and all of its dependencies.</p>
</section>
<section>
<h2>Normalization</h2>
<p>When following a strategy of normalisation, content could be reformatted to a single format (or possibly to one of a short list of formats) that the conservator is better able to control technically.</p>
</section>
<section>
<h2>Migration</h2>
<p>In a migration strategy the media may be maintained as it is. The conservator would track and define its technical qualities and determine how to play the file back properly with modern players.</p>
</section>
</section>
<section>
<section>
<h2>Significant Characteristics</h2>
</section>
<section>
<h2>Aspect Ratio</h2>
<p></p>
</section>
<section>
<h2>Frame size</h2>
<p></p>
</section>
<section>
<h2>Colourspace and Conversion Matrices</h2>
<p></p>
</section>
<section>
<h2>Chroma subsampling</h2>
<p></p>
<aside class="notes">
Kelly: defines it
Dave: rants bout it
</aside>
</section>
<section>
<h2>Interlacement</h2>
<p></p>
<aside class="notes">
Kelly: defines it
Dave: rants bout it
</aside>
</section>
<section>
<h2>YUV sample range</h2>
<p>Full range vs Broadcast range</p>
</section>
<aside class="notes">
Dave: how it affected qctools and complicates things
</aside>
</section>
<section>
<section>
<h2>Codec specific considerations</h2>
<p></p>
</section>
<section>
<h2>h264</h2>
<p></p>
<aside class="notes">
Dave: h264 and 4:2:0, QuickTime 7 h264 decoder issues
</aside>
</section>
<section>
<h2>DV</h2>
<p></p>
<aside class="notes">
Kelly: DV story
Dave: On DV on chroma subsampling problems
</aside>
</section>
</section>
<section>
<section>
<h2>MediaInfo</h2>
<p></p>
<aside class="notes">
Dave: Show metadata reporting on container and on codec, discuss conflicts, presumptions, and inferences. Show examples of under-described capture files.
</aside>
</section>
<section>
<h2>MediaTrace</h2>
<p></p>
</section>
</section>
<section>
<h2>Conclusions</h2>
<p></p>
</section>
<section>
<h2>That's it</h2>
<p>"thanks"</p>
<p><a href="https://twitter.com/search?q=%23amia15">#amia15</a> 2015-11-21</p>
<p>
<small>By <a href="http://twitter.com/BAVCPreserve">Kelly Haydon</a> / <a href="http://twitter.com/dericed">Dave Rice</a></small>
</p>
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.js"></script>
<script>
// Full list of configuration options available at:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
transition: 'slide', // none/fade/slide/convex/concave/zoom
// Optional reveal.js plugins
dependencies: [
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'plugin/zoom-js/zoom.js', async: true },
{ src: 'plugin/notes/notes.js', async: true }
]
});
</script>
</body>
</html>