Adaptive bitrate, ABR, is vital in effective delivery of video to the home where bandwidth varies over time. It requires creating several different renditions of your content at various bitrates, resolutions and even frame rate. These multiple encodes put a computational burden on the transcode stage.
Lowell Winger explains ways of optimising ABR encodes to reduce the computation needed to create these different versions. He explains ways to use encoding decisions from one version and use them in other encodes. This has a benefit of being able to use decisions made on high-resolution versions – which are benefiting from high definition to inform the decision in detail – on low-resolution content where the decision would otherwise be made with a lot less information.
This talk is the type of deep dive into encoding techniques that you would expect from the Video Engineering Summit which happens at Streaming Media East.
Ed Silvester heads up video R&D at Perform Group, since rebranded to DAZN (pronounced ‘dah zone’) so he’s just the man to talk us through the business aspects of encoding. Anchoring the conversation in the times that black and white TV changed to colour, Ed looks at the challenges DAZN have in creating an innovative platform with backwards compatability.
Ed considers whether the industry should DIET, shedding some older technologies (watch the talk to find out what DIET stands for). And raises some questions about how the industry should deal with platforms ending, scaling and compatibility.
In this video from Streaming Media East 2018, Jan Ozer looks at per-title encoding. Jan presents detailed results from tests of competing methods to help us understand the dos and don’ts of encoding and VQ and how these methods allow higher resolution profiles in ABR ladders.
What is ‘per-title’ encoding and why is it important?
What are the different methods? (CRF, SABL, Context Aware, EuclidIQ Rithm)
If the most important characteristic of encoded video is quality, a simple and certain way to achieve it is through Quality-Defined Variable Bitrate Control (QVBR) which is designed to deliver constant video quality and waste zero bits in the process.
Here’s a brief outline of QVBR’s many benefits:
• Generate consistent, high-quality video for a perfected media experience
• Maintain video quality with fewer bits, saving up to 50% on storage and delivery
• Easy, simple operation: Just set a fixed quality level and a max bitrate and the encoder does the rest
AVC and HEVC codec support
Join AWS Elemental for an in-depth, technical discussion of how QVBR works, its advantages, and its uses.
Solutions Marketing Manager for Compression, AWS Elemental
Dan Gehred, Solutions Marketing Manager for Compression at AWS Elemental, is responsible for product marketing for all compression software products. Dan has over 15 years of experience building and marketing digital media applications.
PM Director – Live Encoding Products
Kevin has over twelve years of experience designing and developing professional video products. He is responsible for Product Management for live transcoding at AWS Elemental. He’s convinced that there has never been a better time to be developing great live video experiences for customers.