Tag: H.264 MKV video package
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For the "big god" characters who are immersed in the high-definition world all day, the video packaging format is already familiar with the chest. But for a latecomer who is still in front of the high-definition door, the versatile video format is still a barrier in front of it. In fact, the more mysterious things are, the more fragile they are. It is like a layer of window paper.
â— What is H.264?
First of all, we need to explain that the current video format is composed of audio stream + video stream, the format is just a package container, such as RMVB, MKV, AVI, MPG, TS and so on. Common video streams are MPEG2, MPEG4, H.264, VC1, etc. Compared with MPEG2, MPEG4, etc., H.264 is a new-type video stream, which is commonly found in high-definition video, with high compression ratio and clear image.
The biggest advantage of H.264 video stream is that it has a high data compression ratio. Under the same image quality, the compression ratio of H.264 is more than twice that of MPEG-2, which is 1.5~2 times that of MPEG-4. For example, if the size of the original file is 88GB, it will be 3.5GB compressed by the MPEG-2 compression standard, and the compression ratio will be 25:1. After compression by the H.264 compression standard, it will become 879MB, from 88GB to 879MB. The compression ratio of H.264 reaches an astonishing 102:1.
There are three main reasons why H.264 is sought after: high performance (same standard size), international standards and a fair, non-discriminatory licensing system. Therefore, the HD video formats (ie, MKV, AVI, MPG, and TS) in the current network resources mostly use H.264 encoded video streams.
â— Wide application of H.264
Blu-ray DVD - a new generation of high-definition DVD standards for video compression with H.264.
High-definition TVs - Japan Broadcasting and Television Corporation, European DVB Steering Board, and satellite transmissions of digital television in the United States have decided to adopt the H.264 standard. China Telecom also uses H.264 as the codec standard for its network digital TV platform.
Mobile TV - CMMB mobile TV, which is being rolled out in China, uses H.264 video compression decoding.
Online Video - YouTube, the world's largest video 2.0 site, is gradually converting its video to H.264 encoding. The HD version of Tudou is based on the H.264 standard, and the latest version of Flash released by Adobe is announced to support H.264.
Among the high-definition movies and TV dramas widely spread on the Internet in China, H.264 is the most widely used compression code, accounting for almost half of the total HD video.
In addition, because the terminal devices such as SONY PSP and Apple's iPod series support H.264 decoding, a large number of non-HD H.264 video programs and video files are also popular on the Internet.
â— What is MKV?
Let me explain to you MKV, MKV, like RMVB, AVI, MPG, is a multimedia package format, also known as Multimedia Container. MKV is a popular video format. Compared with AVI, RMVB and MPG, it is compatible with more video encoding formats, such as DivX, XviD, RealVideo, H.264, MPEG2, VC1 and so on. Because it is a folk format, there is no copyright restriction, and it is easy to play, so the official video film is not used MKV, online production download is common.
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