What Is Video Transcoding And Encoding?

When it comes to online cloud video streaming, the terms "transcoding" and "encoding" are often used. Both processes are important to enable live streaming and ensure video quality for both live and on-demand content. Transcoding services are services that allow you to create multiple "versions" of the same video at different qualities. The adaptive bitrate player uses these renditions for multi-bitrate streaming. With cloud transcoding and an adaptive bitrate player, you can automatically choose the best playback for each viewer based on their internet speed. In the simplest terms, video encoding is the process of compressing a video file and saving it as a smooth video rather than individual images. Video encoding is the process of preparing digital video for output using video encoder software and encoding the digital video so that it conforms to the correct format and specifications for capture and playback.

Transcoding refers to creating different copies of similar files at different sizes, while encoding can be the initial process of compressing the raw video or the process of re-encoding the video to another format. there is. Encoding is always transcoding, but transcoding is not always encoding. There are various reasons to transcode or encode videos.

How do you transcode videos?
Video is recorded in a format specific to the camera or program that captured the images and audio. This is usually not the format you need to upload the video to the Internet or play it on another device. Transcoding converts the original format into a format that allows video and audio to play correctly on users' devices, such as computers, tablets, smartphones, and televisions. Video encoding, also known as video transcoding, is a two-step process. The original file is first decoded and converted to uncompressed format. The uncompressed format is encoded into the target format in a second step.

How do you encode the video?
Encoding is often the most time-consuming part of video processing. This depends on a variety of factors, but short videos may take a few seconds, while longer videos with large file sizes and advanced codecs may take several days. No matter how fast a standalone video encoding API service claims to be, the entire video must first be encoded before it can be published. Therefore, you will have to wait for some time until it is available to your viewers. However, developments in this field are underway to basically eliminate waiting times.

What types of transcoding are there? Converting an encoded or transcoded file to another format is called transcoding. Transcoding can be divided into three different types, depending on what you're trying to do to adapt your video to a particular browser, player, or platform.

From lossless to lossless:

This transcoding is important for maintaining video quality across different formats, but it also gives you the opportunity to take advantage of better hardware or compression algorithms.

From reversible to irreversible

It will certainly have a negative impact on the video quality, but doing so will provide some benefits. This may result in smaller, faster, or more compatible playing files with the needs of specific platforms, players, and browsers.

From irreversible to reversible

People often get confused about how to restore video quality, but that's not true. When you transcode a lossy video format to a lossless format, no additional quality is lost in the conversion process. What is clear is that data lost during compression cannot be recovered.

What coding examples are there?
Encoding means going from an uncompressed source to a compressed source. For those wondering what an uncompressed raw video source is, From a practical standpoint, this is anything where a video file contains data directly from a camera sensor. Speaking of the digital space, SDI (Serial Digital Interface) and HDMI (High Definition Multimedia Interface) are also popular standards. Although HDMI is currently preferred in professional environments, SDI has proven to be more reliable and, therefore, more popular.

What are the best encoding settings? 
You need to decide what compromises you want to make when coding. You must decide how much to compress the file and how much data to discard during this process. For example, you can encode high-quality videos that can be delivered to users using high-speed Internet connections, or you can lower the quality to save on storage and delivery costs. Many factors influence your optimization choices, including the type of content. Manually configuring all settings can be time-consuming. You can choose several bitrates to create a static bitrate ladder for your video or automate the process. Per-title encoding is a way to generate a unique adaptive bitrate ladder for each video based on its complexity. There are services that add an extra layer of sophistication by encoding individual tracks using machine learning. This streamlines the process while ensuring the highest possible quality.

Why do we need transcoding?
The increase in demand for streaming has directly led to an exponential increase in the need for transcoding, and it will continue to do so for the following reasons:

Convenience

Our lives are filled with digital devices, and no one likes being tied to a schedule or streaming videos to watch at their convenience. This is only possible through transcoding.

personalization

User-view profiles are used to recommend video streaming apps and services. In other words, you can personalize your content buffet based on your preferences.

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