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This article mainly explains "what is the Web video format?" the content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn what the Web video format has.

Online video has always been popular. While embedding Instagram and Youtube videos on a page is simple, there is a growing need for customized video delivery methods, such as many e-commerce scenarios. When setting up video processing and transmission pipes, the first thing to consider is the video format to be served. User experience, support (browsers and systems), compression efficiency, or coding speed may be relevant to this choice. What is the format of Web video?

What is needed for Web video format

Containers and codecs

Compared with the usual image format, it is important to be aware of the difference between containers and coding standards. The file extension can only tell us which container it belongs to, not which codec to use. The coding standard followed determines whether the browser or system supports it.

For example, although the Web video format is generally encoded using mp4 containers and the H264 standard, not every mp4 file is generally supported because it may use a different standard encoding, such as H265.

It becomes even more complex in terms of adaptive bit rate (ABR), which brings the best way to respond to users' network and device functions.

Let's take a look at the main combinations of containers, coding, and delivery standards, and their differences in support, compression efficiency, coding speed, and user experience.

What is the Web video format?

Progressive video

H264/AVC

The king of video formats uses a mp4 container with H264/AVC encoding. Sometimes you will see it in the M4V container (the default format in Handbrake), a mp4 derivative developed by Apple for H264 video with DRM protection.

Every browser and system-- as well as native applications in iOS and Android-- supports this format. This is a safe choice to avoid compatibility issues.

In addition, almost all desktops and mobile devices support hardware acceleration with H264. The coding and decoding speed is very fast. 、

All in all, it is very easy to encode and use this format. Like images, you only need to insert a video link with html5 and you can use it in any browser.

A delay of about 2000 kbps and more than a few seconds may affect visual quality. Pauses and rebuffering may occur when watching over the mobile network or during peak hours of the network. If you use a scheme that reduces image quality, it will produce artifacts such as blur, floaters, or blocks.

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