H.265/HEVC Codec: A professional HD camera produces a huge amount of raw data. This makes it a task to transport it to homes. On the other hand, compressing the video reduces the amount of data usage, making it easy to transfer the same. There is a myriad of ways to achieve this. Firstly, one can do it by beginning with reducing the quality.
It fits plausible in certain cases, such as a YouTube video. These videos are compressed to a great extent, either during or after the upload, thereby making the images appear noisier, softer, and distracted even with the same resolution. This brings on the next best option, which is a better compression technique.
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High-Efficiency Video Coding, also known as H.265, which is the successor of Advanced Video Coding (AVC) or H.264, is the better option. The latter uses compression schemes used by Blu-ray.
The objective of HEVC is to provide image quality as AVC but with a better compression technique. This eventually utilizes less data than the latter.
This also one of the key aspects to keep in mind when selecting a compressor to understand if we want a 4K Ultra HD broadcast, which includes satellite or 4K Blu-rays or a better version.
HEVC High-Efficiency Video Coding
HEVC, also is known as High-Efficiency Video Coding or H.265 and MPEG-H Part 2, is a video compression standard that is designed primarily as a part of MPEG-H projects.
This, as a successor for AVC, H.264, or MPEG-4 Part 10 i.e., Advanced Video Coding! HEVC provides 25% to 50% of better data compression in comparison to AVC, providing the same quality of the video, which is much improved at the same bit rate.
The HEVC codex supports resolution ranged up to 8192×4320, which includes 8K UHD in comparison to 8-bit primary AVC. HEVC’s greater fidelity Main 10 profile supports all hardware.
Besides, HEVC competes with AV1 coding, which is royalty-free for standardization using video standard working group NetVC by Internet Engineering Task Force (IETF).
HEVC is known to use integer DCT and DST in size range of 4×4 and 32×32. While AVC makes use of integer discrete cosine transform i.e., DCT in the size range of 4×4 and 8×8.
Herein, HEVC is considered a better option among 43% of video developers, making it the second most used video coding format second to AVC.
x265 HEVC Encoder / H.265 Video Codec
On the other hand, x265 is an HEVC or H.265 video encoder application library that is designed primarily to encode images, videos and convert them into an HEVC/ H.265 encoded bitstream.
What Is an HEVC H.265 Video Decoder?
Decoding a High-Quality Video can be quite a task and Hard work too!
The working of video decoders is simple. Its primary use is to decode the video involving the encoded upstream. It further enables one to view and produce them. Besides, it can also be sent downstream to other mediums like SDI cables, over an IP network or HDMI.
However, it is necessary that both the encoder and decoder work in the same compression codec whether it is HEVC/ H.265 or H.264. Similar to video encoders, the decoders can also be in both software and hardware format.
Furthermore, a hardware video decoder requires high processing power as its main work is to present fast, effective, and reliable decoding of videos for streaming. Thereby, hardware decoders enable users to stream videos that are high in quality at lower bandwidth and latency in comparison to software decoders.
H265 Video Codec
The HEVC video encoder compresses or encodes video frames and source video for compressing video bitstream. This begins with firstly breaking the blocks into pixels, which are later evaluated for spatial redundancies as well as temporal linkages in-between frames.
This is analyzed to benefit from areas that do not change. The blocks are encoded using motion vectors that are used to predict the qualities of each on the next frame. Later the residual information is encoded by the binary compression method.
- Reasons Why HEVC (H.265) Matters
- Below listed are reasons why HEVC (H.265) matters:
- It is cost-efficient and more overhead
- Works better for data-strapped locations
- Designed to adapt universally
- It can be used any day
How H.265/HEVC Codec is beneficial for VOD & Live Streaming
If you are considering how does H.265/ HEVC Codec is beneficial for VOD and Live Streaming? Below listed are a few benefits:
- Presents enhanced optimization and high-quality coding
- Better bit-stream
- Requires reduced processed for decompression
- Presents bigger CTU (Coding Tree Units) size thereby leading to better segmentation of CTU and motion compensation.
- While an H.264/AVC needs 32 MB/s bandwidth for 4K transmission, an H.265/HEVC requires a bandwidth of 15 MB/s.
H.265/HEVC Codec for VOD
An HEVC (H.265) can be described as a high-efficiency codec that fits best for high-resolution videos such as HD in addition to 4K and 8K streaming.
It thereby requires higher consumption of bandwidth, thus requires a codec that can present better compression.
Nimble Steamer provides an HEVC transcoding and transmuting potentialities that offer VOD and live to a stream of media.
H.265/HEVC Codec for Live Streaming
This fits best for streaming live videos for bigger events such as Oscars, Premiere League finals, etc. This requires better live streaming for both software and hardware.
Furthermore, it also requires the transcoding of 4K video recording into digital, transmitting it online without breakage or lags.
While love streaming presents a lot of constraints, and H.265 Codec makes it easier by thousand times.
With HEVC, it is assisting broadcasters in producing easy streaming and present over 4K content on the internet. As the shift is slow-paced, broadcasters are taking a smart approach to choose video recorders to decode HEVC and H.264.
This has improved the compression efficiency of HEVC, thereby making the content many deliverables and affordable to consumers as well as distributors. When the HEVC codec turns universal, it will go on to present better opportunities for video creation, making Teradek the future.