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Video Breakthroughs
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Monitoring innovations in post-production, head-end, streaming, OTT, second-screen, UHDTV, multiscreen strategies & tools
Curated by
Nicolas Weil
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From
gfxspeak
At NAB this year, it was striking to see how many companies have taken advantage of GPU compute to improve the performance of their applications. Video, rendering, imaging, and effects are all tasks that can benefit from the parallelism of GPU compute. Nvidia’s CUDA and OpenGL have been around for a long time, but we’re also seeing the first of the OpenCL applications coming online. 
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Pro users will gain GPU-accelerated encoding with the Intel HD Graphics GPU included in Sandy Bridge processors. NVIDIA CUDA support has also been improved.
The program now offers 1- and 2-pass variable bit rate encoding for H.264-based Smooth Streaming (in the Pro version), support for more bitrate and sample rate options when using the AAC codec, and support for SRS audio encoding.
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Some product highlights:
Video Codec Support :
Audio Codec Support :
Integration and Customization Capabilities :
Cloud Server and Storage Support :
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Rovi Corporation today announced the availability of an updated version of its MainConcept Codec SDK (Software Development Kit). Version 9 of the SDK will enable developers to quickly take advantage of many of the very latest codec and network streaming technologies, providing them with what they need to integrate video and audio compression functionality. Rovi, developer of the industry’s leading video and audio codec library, will demonstrate Codec SDK 9 in action at IBC 2011in Hall 5, Stand A31.
Codec SDK 9 demonstrates Rovi’s breadth of entertainment offerings, which include upstream production technology used to create and distribute entertainment. Rovi’s MainConcept technologies are used by top production and broadcast brands across a wide range of professional industries, from Hollywood authoring, IPTV and streaming media to security, medical and digital signage.
New features of MainConcept SDK include:
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Maybe some of you remember the Tarari Encoder Accelerator for Windows Media which came on market in 2005 as a FPGA loaded PCI board. It was a 10K$ investment but it could seriously boost your encoder performances and it was a transparent solution for all encoders integrating Windows Media SDK. That was maybe the only real reliable option to do HD encoding decently at that time. More confidential were the Ambric cards for accelerating MainConcept H.264 and MPEG-2 SDK, which were found to be working with Inlet Armada transcoding farm.
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The massively parallel transcoding company is one of the first to take advantage of Amazon's GPU cloud computing.
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Following our latest review of the features of Wowza Media Server, let’s now look at how to transcode video streams using this plugin. This feature is helpful when you only have a single source of high quality video and you would like to deliver the video to multiple devices. Yet another example is video stream failback to audio only in an iOS application (AppStore’s requirement), where you need an additional stream with cut-off video. A typical approach to this problem requires a transcoder (you can also generate an audio only stream using the new Adobe Media Server 5.0). Usually, a transcoder is a separate server optimized for video handling. Wowza offers an alternative: transcoding at the media server level. Let’s look at how it works in more detail.
Wowza Transcoder is a paid addon to the Wowza Media Server. It can transcode incoming video to H.264 (MPEG-4) streams tailored for different viewing devices. To run a transcoder, please install a 64-bit version of Java. Wowza Media Server supports the hardware transcoder technologies: Intel Quick Sync hardware acceleration and Nvidia CUDA hardware acceleration.
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Like old-time alchemists who turned base metals into gold, Elemental Technologies, Inc. converts industry-standard CPUs and GPUs into the hottest H.264 on-demand encoding box I’ve tested, with incomparable speed and quality that matches the best in the business. While there are some notable deficits, including limited output format support and subpar VC-1 encoding performance, if you need a tool to accelerate your H.264-encoding, Elemental Server should be on the top of your list.
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Squeeze 8 includes full support for the x.264 codec, featuring an intuitive user interface and in-product instructions that let video professionals adjust and optimize up to 48 major encoding parameters. These include key frame rates, encoding modes, and performance to adapt the H.264 format to user needs and workflows.
GPU acceleration via Nvidia CUDA is optimized for Squeeze 8, making it the best option for creating .mp4 proxy files in terms of both speed and quality, Sorenson says.
More details here : http://digitalmediaupdate.blogspot.com/2011/10/sorenson-squeezes-out-new-version-8.html
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Video encoding is often thought to be the most common general public application for GPGPUs. We’ve decided to give you a roundup on performance, speed and quality of the various solutions!
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There are basically two ways to sustain the extensive growth of video formats that you must, as a media distributor, serve to your different clients’ target devices : the most common answer is to choose the best in breed most-powerful encoders to prepare all the target formats during the content preparation time (see Panorama article N°1 on this topic), but you can adopt a different approach saying that you want to prepare your contents once and have the distribution part of the overall workflow take care of the repackaging and protection of the contents on the fly.
Server-side repackaging of the streams consists eventually in : - choosing languages in audio and subtitle tracks available in the original mux (optional) - transcoding/transrating the video content in different sizes/bitrates from a high quality video file (optional) - applying a DRM compatible with the output format (optional) - generating the manifest file corresponding to the target adaptive streaming technology (mandatory) - remuxing and chunking the video data according to the output protocol requirements (mandatory) Historically, repackaging was pushed as a quick solution for broadcasters to add iOS streams on top of existing Smooth or Flash streams. In a wider OTT/Adaptive Bitrate perspective, this alternative approach means : less files to manage in the main production workflow, less storage, less bandwidth to populate the origin servers, smaller time to contents’ online availability and easier support for new formats – shortly said, an agile path. Potentially a risky one, but quite attractive… Let's examine the available options on the market, to do it on your own platform or in the cloud !
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Best practices for using Nvidia CUDA-accelerated GPUs for encoding in Expression Encoder Pro, which integrates MainConcept H.264 CUDA encoder SDK.
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Full NAB presentation here : http://nvidia.fullviewmedia.com/gtc2013/0320-210B-S3099.html