At the core, codecs are advanced video compression tools that work on encoding and decoding algorithms. Once compressed, all the components of video are wrapped into a specific file format, termed as Containers. Further, the video codec at the user-end decodes the file and ensures seamless streaming. So, this is how a video codec acts both at the source end during encoding to compress the video file and before playback during decoding to decompress it.
Because of its motion-compensation-based video compression standards, AVC is highly recommended for recording, compression, and distribution of video files across multiple devices including Laptops, Mobile Phones, Desktops, Tablets, Smart TVs, and gaming consoles. Apart from streaming market, H. The most exciting benefit of integrating H. Considering the content capturing systems in next-generation HDTV displays, HEVC is designed with advanced video coding layers, parallel processing tools, motion vector predictions, and other essential coding extensions.
Presently, H. Because of its low computational footprints and quick hardware optimization abilities, AV1 delivers highest-quality real-time videos, scalable to any modern device at any bandwidth. HEVC, the successor of AVC, has been in place for almost six years, but still content distributors are hesitating to adopt its compression standards, because of expensive and tedious configurations.
Now talking about the latest video codec — AV1 is exclusively designed to be more performant than all the available codecs in the market. So, if you are looking for a next-generation performance-oriented video codec that is limited by bandwidth and licensing cost, AV1 is the perfect codec. Else, you can go with HEVC for its real-time, and low latency encoding process.
But remember, as time will pass on, both the streaming industry and technological developments will ultimately shift towards AV1 and its successors.
Netflix: AV1 is our primary next-gen codec
At Muvi, we definitely believe that AV1 will have a positive impact on the streaming industry in the next five years. Considering that, we offer a fully-managed built-in streaming engine for multi-codec video delivery using dedicated servers. Check out the configurations of our 2x faster encoding and transcoding extensions for details. Book a Meeting.
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What is a Video Codec? Role of codec in Video streaming Viewers love streaming videos online , especially when there is no buffering or lag issues. Which is the Best Video Codec for Streaming? Don't forget to share this post! Related Posts. The additional types of motion which are enabled are scaling, rotation, shape changes and shearing.
Next-Generation Video Coding And Streaming
The full model now has 6 degrees of freedom DOF compared to the 2 degrees of freedom of the conventional planar motion scheme. Affine Motion 6D. Again, this allows for much more flexibility at the encoder side but at the same time is also very complex. Searching for motion information or prediction information based on pixel information at the decoder side is an idea that has been around for a long time but has never been implemented in a standard because it basically moves some of the complexity from the encoder to the decoder.
While in the past it has been show often that this can really improve the coding efficiency it was always considered impossible to add so much complexity to the decoder. The idea for VVC is that if we have normal bi-prediction we are predicting from two references, and copying information to the current block. Using that prediction as a template we search through the reference pictures that we already have for a better motion compensated block.
Then, we re do the prediction again using the updated motion information and obtain a better prediction of the current block. In order to keep the complexity of the search at the decoder to a minimum, only 8 positions around the block are search in each reference.
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- Next-Generation Video Coding And Streaming;
This is a tradeoff between the additional decoder complexity and the coding efficiency. There are still a lot of tools that are under discussion. One of these topics is non rectangular partitioning. Normally, all coding blocks are rectangular while edges in natural images are usually not. Therefore, encoders tend to select very small blocks around edges in order to efficiently predict them.
With more flexible prediction shapes like diagonal splits the encoder could use bigger blocks at edges which would be much more efficient. Again this adds quite some complexity at the encoder side and creates new issues on how to integrate it with other techniques. Multiple different options are under discussion here. There are many other ideas that are still being considered and many of them are a long way from being set in stone. Some of these include:. The big question that everyone wants answered is: what is the performance of VVC? The majority of tools mentioned above are not yet able to be used and so these results are expected to improve a lot from what we see today.
Next-Generation Content Delivery: The Shift Is Underway
There are three different configurations which are tested, but the one we are most interested in is the Random Access one, which is the most performant configuration and is tailored to VOD and streaming applications. But it was also already shown that when subjective tests are performed, the values are much higher.
At the same time, the complexity of the encoder and decoder does not increase too much compared to HEVC. Also the encoder complexity just increases by a factor of about 4 which is also quite manageable. When more of the tools which are currently under discussion are adopted it is quite likely that these values will further increase.
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However, the joint team always has a close eye on these values so a huge hike is unlikely. Since the standardization is still ongoing and it is not yet finalized which tools and techniques will be in the final version of VVC, the licensing situation is still mostly unknown. The one thing that we do know for sure is that VVC is a patent-prone video coding standard and will not be free of charge. The major problem with HEVC is that there is more than one license pool plus some companies that do not license their IP at all.
This has made the situation very difficult to manage. For the sake of everyone who wants to make good use of VVC, we are hoping that there will be a better solution for VVC. There is an industry forum that tries to work towards a better solution but right now there is only so much we can do. There is no doubt that VVC has some exciting potential and is already showing some interesting results. Two years is a long time, and there is a lot of opportunity to further increase the coding performance, as well as perfect some of the new tools that are already adopted into the new standard.
It will be exciting to check in again in 6 to 12 months to see how the codec is developing.
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VVC development timeline. Block partitioning in VVC.