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Envision this future headline: “Public Outcry as Final Minutes of World Cup Soccer Lost Due to Wireless Interference”. While this may seem impossible in today’s world, it could very well become a reality if the International Telecommunication Union (ITU) World Radiocommunication Conference (WRC-15) favors the reallocation of some C-band spectrum rights to mobile providers.
Part 1 of this article covered multiple aspects of compression technology: macroblocks, DCT, quantization, and lossless compression. Part 2 will focus on motion estimation for P- and B-frames—after a review of lossless data compacting. Part 3 (next month) will detail the critical role of Predicted frames and Difference frames in maintaining image quality.
Improving accessibility of content through Video Description. The accessibility of media to partially sighted audiences may be enhanced by provision of additional information in the form of audio narrative track. An audio description of the video content is called “audio description” or “video description” in country-dependent nomenclature. Traditionally, a trained ‘describer’ identifies appropriate points in the audio timeline where a description is needed (and can be placed) and produces a script. This process has much in common with captioning, but perhaps for historical reasons is almost always done separately. Typically, the ‘describer’ will also record the individual voiced segments, although sometimes the description is performed by a separate ‘voice talent’.
This paper gives an overview of the transcoding basics you’ll need to know in order to make informed decisions about implementing transcoding in your workflow. That involves explaining the elements of the various types of digital media files used for different purposes, how transcoding works upon those elements, what challenges might arise in moving from one format to another, and what workflows might be most effective for transcoding in various common situations
The most recent non-proprietary video compression standard, High-Efficiency Video Codec (HEVC), also known as H.265, was placed into final draft for ratification in January 2013 and is expected to become the video standard of choice for the next decade. As with each generation of video compression technology before it, HEVC promises to reduce the overall cost of delivering and storing video assets while maintaining or increasing the quality of experience for the viewer.
The popular concept of television anytime, anywhere and on any device may be Internet driven, but it could not exist without Content Delivery Networks (CDN) — the speedy enablers that work quietly behind the scenes connecting video programs to end users.
While not the most wide-spread DTV standard, ISDB-T still offers many advantages.
Viewers and broacasters all want more channels.
