Video Breakthroughs
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Video Breakthroughs
Monitoring innovations in post-production, head-end, streaming, OTT, second-screen, UHDTV, multiscreen strategies & tools
Curated by Nicolas Weil
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A Buyer's Guide to Multiformat Streaming Media Servers

A Buyer's Guide to Multiformat Streaming Media Servers | Video Breakthroughs | Scoop.it

MPEG DASH is the biggest factor to consider -- or is it? Here are the key features to know about before making a decision.

 

2012 saw significant progress on several fronts for media servers. Some changes were small but important, such as naming conventions -- Adobe dropped Flash from its media server names, for instance -- while others were much more impactful for the industry going forward -- almost everyone agreeing that Dynamic Adaptive Streaming over HTTP, DASH for short, was worth supporting.

 

In this year's Buyer's Guide, we'll take a look at a few key features you'll need to know about to make an informed decision.

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Asil's curator insight, February 21, 2013 3:19 AM

Just in case you're streaming yer own content.

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Adobe Media Server, 608/708 CC and the CVAA

Adobe Media Server, 608/708 CC and the CVAA | Video Breakthroughs | Scoop.it

Adobe Media Server 5 features support for closed captioning. But why is it important, and what are the options?

 

Summary :

- Why closed captioning?

- Why 608/708?

- What does Adobe Media Server 5 do?

- How to render closed captions?

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The Zencoder guide to closed captioning for web, mobile, and connected TV

The Zencoder guide to closed captioning for web, mobile, and connected TV | Video Breakthroughs | Scoop.it

Captioning is coming to internet video. Legislation goes into effect in the US during 2012 and 2013 that mandates closed captioning on certain categories of online content – see our earlier post for details on the legislation. But even apart from this legislation, closed captioning is a good thing for accessibility and usability, and is yet another milestone as internet video marches towards maturity.

 

Unfortunately, closed captioning is not a single technology or “feature” of video that can be “turned on”. There are a number of formats, standards, and approaches, ranging from good to bad to ugly. Closed captioning is kind of a mess, just like the rest of digital video, and is especially challenging for multiscreen publishers.

 

So if you want to publish video today for web, mobile, and connected TV delivery, what do you have to know about closed captioning? This post will outline the basics: how closed captions work, formats you may need to know about, and how to enable closed captions for every screen.

 

 

For DASH implementation, read this document : http://t.co/89n8sZdY

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SMPTE makes closed-captioning standard freely available for online video

SMPTE makes closed-captioning standard freely available for online video | Video Breakthroughs | Scoop.it
The Society of Motion Picture and Television Engineers (SMPTE) announced on May 3 that it will make its standard for closed-captioning of online video content (known as SMPTE Timed Text and by the designation SMPTE 2052) available free of charge.

The announcement comes as the FCC prepares to move on adopting rules to give those with disabilities access to Internet video content with closed captioning.
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Closed Captioning for Streaming Media

Closed Captioning for Streaming Media | Video Breakthroughs | Scoop.it

Whether you're required by law to offer closed captions or not, there's good reason to add them to your online video workflow. Here's how.

 

Though relatively few websites are required to provide closed captions for their videos, any website with significant video content should consider captioning. Not only does it provide access for deaf and hard-of-hearing viewers, but captions and the associated metadata can dramatically improve video search engine optimization. In this introduction to closed captions, you’ll learn about who needs to caption and who doesn’t (and why you may want to anyway), the available workflows for captioning live events and on-demand files, and a bit about web caption formats and how to marry them to your streaming files.

 

Let’s jump in.

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Announcing Adobe Media Server 5.0.1 : Closed Captioning, DRM for HLS, Multiple Language Audio Tracks, SIP Gateway

Announcing Adobe Media Server 5.0.1 :  Closed Captioning, DRM for HLS, Multiple Language Audio Tracks, SIP Gateway | Video Breakthroughs | Scoop.it

Adobe Media Server 5.0.1 brings to you – Closed Captioning compliance, DRM protection for millions of iOS Devices and Playback Support for Multiple Language Audio Tracks.

 

Adobe Media Server 5.0.1 comes bundled with Adobe Media Gateway – a powerful technology to connect SIP telephony devices to flash based applications.

 

Closed Captioning :

Adobe Media Server supports CEA-608 (also called Line 21) and CEA -708 closed captions in video files containing H264 video codecs. This plays in HLS, HDS and RTMP Streaming protocols. Additionally, the timed text track defined by Apple for Quicktime movie files is also supported. Adobe Media Server 5.0.1 also provides support to embed your content programmatically while encoding the content via an AMF message. This works for RTMP and HDS techniques.

 

Support for Multi Language tracks :

Adobe Media Server 5.0.1 has support for including multiple language tracks for HTTP video streams, without requiring duplication and repackaging of the video for each audio track. This feature, called as “late” binding of audio tracks allow content providers to easily provide multiple language tracks for a given video asset, at any time before or after the asset’s initial packaging. The OSMF framework based Strobe Media player provides support for allowing the viewers to switch between audio tracks either before or during playback.

 

Content Protection for HLS Streams :

Adobe Media Server offers both stream and content protection across HLS, HDS and RTMP protocols. It also enables DRM protection using the Adobe Access DRM license server. Now, Adobe Media Server can dynamically segment, encrypt, and deliver standard MP4 assets using the HLS format with Adobe Access DRM policies on native Apple iOS applications (using the Adobe Access Objective-C library for iOS).

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Captionator.js : Video Captioning in HTML5, NOW...

Captionator.js : Video Captioning in HTML5, NOW... | Video Breakthroughs | Scoop.it

At first glance, video captioning might not seem like a huge deal. Maybe it might appeal to you if you need to meet accessibility requirements in your workplace, or you're just doing it to be nice to people with hearing difficulties.

 

You're pretty far from the mark though. Yes, accessibility is an important driver for video captioning on the web. But it's about much more than ‘deaf people’ (and you should be providing quality captioning for them anyway!)

 

In addition to important accessibility benefits, captioning your video can allow automatically generated transcripts, text search-ability within videos (imagine what will be possible once Google supports crawling WebVTT!), chapter markers and powerful metadata capability, and much more! You could provide a track of time-specific comments on the video (the same way SoundCloud allows commenting on specific parts of audio) or even a live twitter feed on your video (similar in style to the ABC'S Q&A program.)

 

“Alright!”, you say. “I'm convinced. How does HTML5 allow me to caption my video?”

 

For a while, there wasn't an easy way to do it. Guys like Bruce Lawson were coming up with creative ways (if a little hacky) to implement support, in lieu of a proper standard.

 

Now, however, there's a really nice way to provide support - the HTML5 <track> element and its associated JavaScript API. There's a slight catch though. No currently shipping browser supports either of these features/standards. They will soon - Webkit has support in development, and Firefox can now parse the <track> element (but can't do anything with it yet.)

 

But you want to caption your HTML5 video now. And for that, you need Captionator.js.

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