Code Samples. All How To Guides. Configure your DRM. Case Studies. Get a Free Trial Talk to an expert. Your Website Title. AV1 H. Why is Encoding Important? Motion Compensation In video encoding, motion is very important. Macro Blocks Within each frame, there are macroblocks. Chroma Subsampling In most cases, we divide a color in RGB channels, however, the human eye detects changes in brightness much more quickly than changes in color, especially in moving images. Quantization When discussing the encoding of video, we refer to more than just saving space with the image components, but also with the audio components.
What are Codecs? Video Codecs H. Hybrid Codecs A hybrid codec is essentially a codec which works on top of another codec. The process usually follows these steps: usual steps: take an input video use proprietary downscaler on the video e.
Contact us. You might also like Read more. Reducing streaming latency has been a hot topic for a while. Historically with HTTP based streaming, latencies of tens Streaming Latency: Protocols and Zapping Time. Streaming Latency: What Causes It? Encoding for Cost Efficient Streaming. In simple terms, encoding is the process of compressing and changing the format of raw video How to choose the best video codec.
The last few months brought us a plethora of presentations, blogposts and articles as you can read in our previous What is AV1? Quality Video for the 21st Century — H. Without compression, raw video content would exclude many from being able to stream content over the Internet due to normal connection speeds not being adequate. The important aspect is bit rate, or the amount of data per second in the video. For streaming, this will dictate if they can easily watch the content or if they will be stuck buffering the video.
The second reason for video encoding is compatibility. In fact, sometimes content is already compressed to an adequate size but still needs to be encoded for compatibility, although this is often and more accurately described as transcoding. Being compatible can relate to certain services or programs, which require certain encoding specifications.
It can also include increasing compatibility for playback with audiences. Video codecs are video compression standards done through software or hardware applications. Each codec is comprised of an encoder, to compress the video, and a decoder, to recreate an approximate of the video for playback. The name codec actually comes from a merging of these two concepts into a single word: enCOder and DECoder. Example video codecs include H. Although these standards are tied to the video stream, videos are often bundled with an audio stream which can have its own compression standard.
These codecs should not be confused with the containers that are used to encapsulate everything. These containers do not define how to encode and decode the video data. Instead, they store bytes from a codec in a way that compatible applications can playback the content. This can be confusing, though, as some audio codecs have the same names as file containers, such as FLAC.
The reason is that different video codecs are best in certain areas. For high quality video streaming over the Internet, H. The codec has a reputation for excellent quality, encoding speed and compression efficiency, although not as efficient as the later HEVC High Efficiency Video Coding, also known as H.
As noted, though, a more advanced video compression standard is already available in HEVC. This codec is more efficient with compression, which would allow more people to watch high quality video on slower connections. In , Google purchased On2 , giving them control of the VP8 codec. Netflix tested these later formats versus H. The exception was at p resolution, which was either close and in some scenarios had VP9 as more efficient.
As a result, despite not being as advanced, H. Note, the H. However, this is not the same codec but actually a free equivalent of the codec versus the licensed H. Like video, different audio codecs excel at different things. So there will always be some waiting period before you can make it available to your viewers.
But there are innovations happening in this space which are essentially eliminating the wait time. Advancements in encoding wait time: Just-in-time encoding is an encoding process that lets you publish your videos near instantly.
You don't have to wait until the video is fully transcoded to publish it. When a viewer requests to playback a video, the transcoding process starts and bytes of the video are delivered to the viewer as soon as the first frame of the video is encoded. Every Mux Video customer gets just-in-time encoding. Create an account and test it out. For example, you may choose to encode a higher quality video that you can deliver to users with a great internet connection, or limit the quality of the video, so you can save money on storing it, or delivering it to users.
What you choose to optimize will depend on many factors, including the type of content you have. Configuring all the settings can require a lot of manual work. One approach might be to pick a handful of bitrates and have a static bitrate ladder for your videos this would be easiest for you but sacrifices video performance or you could automate this process.
Advancements in encoding quality: Per-title encoding is a process that creates a customized adaptive bitrate ladder for each video based on the complexities of each video. There are services that add an additional layer of sophistication and use machine learning to do per-title encoding. This automates the process plus delivers the most optimized quality. The best way to visualize how videos work is by imagining a flipbook — many consecutive images change so quickly that they simulate motion.
Well, the job of encoding is to make that motion as fluid as possible. Since the early days of video technology, 30 FPS frames per second was the standard for all video content. What does that mean? It means that every second of a video consisted of 30 photos. That left creators with huge files impractical for distribution. So how does one solve that issue? The answer is straightforward — by compressing them!
Video compression entails encoding a video file to take up less space and becomes easier to distribute over the internet. By compressing your video files, you can reduce their size significantly. But how does video compression even work? The gist is that, by compressing your raw video files before uploading, you can leave out any unnecessary frames and substitute them with references to previous ones.
But what about encoding? Yes, and no. Namely, regular video compression sacrifices content quality when reducing file sizes, while encoding was developed as a specific type of video compression to prevent that. The different compression standards that dictate the encoding process ensure maximum compression with minimal quality loss. When talking about different compression standards encoding follows, we must mention codecs.
Video codecs are a program or device that encodes or decodes a particular data signal or stream, and they dictate the entire encoding process. They are what compresses RAW video and audio files between formats and reduces their size. In other words, they are software that does all the dirty work. Codecs consist of two components:.
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