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Position:IcFull.com » IC Electronic information » Category: H

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HD naming terminology to explain the principles and

In Electronic Infomation Category: H | on April 13,2011

HD nomenclature and HCF4053M013TR datasheet and terminology to explain The current definition of resources

general release the following naming convention: Video Title (Chinese + English). Source. Compressed or handled. Resolution. Video encoding. Track format - the production team or a subtitle group name @ release site. Between the various specifications of the name are to point separator (decimal point) separated, so as H.264 is often abbreviated as H264 or directly x264, so as not to affect the reading. Well, from the naming what we can read the information?

Blu-ray and HCF4053M013TR price and HD DVD

Blu-ray that we are familiar with the "blue" disc, referred to as BD. In fact, from a technical perspective, BD and HCF4053M013TR suppliers and HD DVD have adopted a wavelength of 405nm blue laser to read and write as a source, is not it should be referred to as "blue" mean? Oh, as to why one is called HD DVD called Blu-ray, or leave you go to Google.

Approach: HD Remux, HDRe, HDRip (BD like)

HD Remux, referred to as Remux, usually refers to the BD or HD DVD discs in video and audio content to non-destructive way to extract and package to a specific format (usually TS) files inside the treatment. It has not been any form of re-encoding, video and audio, pay attention to "authentic. But the film will not have the original disk Remux playback menu and * Xu, and, the film has a large capacity, in the current network environment, need more long download time.

HDre to the capacity, to obtain a better picture and sound quality on the balance will be re-encoded HD video streaming approach. It does not re-encode the audio stream, it can maintain a good quality performance. HDre movie deal more than the minimum level to achieve a resolution of 720p, and therefore belong to the ranks of high-definition video.

HDRip video and audio streams have been re-encoded to further reduce the volume, quality performance slightly lower than 720p, better than the DVDRip, and the volume is also close to the latter. A complete HDRip movies in general only take 2GB to 4GB storage space for easy communication between audio and video enthusiasts. Of course, the picture quality than 720p to almost, HDRip usually classified as "SD" ranks.

Common resolution: 720p, 1080i, 1080p, a1080, a720, 816p

First three are used to identify key indicators of high-definition video resolution. Among them, the number is followed by the i and p are the Interlace scan (interlaced scan) and Progressive scan (progressive scan) the abbreviation, and the number reflects the vertical resolution of HD video. Refers to as 720p 1280 * 720 progressive scan, 1080i is 1920 * 1080 interlaced, which is a horizontal resolution of the signal source in accordance with the conventional method of abbreviated nomenclature. To more than 720p resolution, is the access threshold for HD sources, 720p standard, also known as HD standards, and 1080i/1080p called Full HD (Full HD) standard.

Part of the films resolution is a720 and a1080, is the use of morphing technology to obtain higher quality. a1080 generally includes 1440 1280 * 1080 * 1080 and two sizes, the vertical resolution of 1080p standards are met, through the play of horizontal expansion, to achieve close to the clarity of Full HD. a720 generally use 960 * 720 size, but also lower to the 852 * 720. The 816p is not a standard resolution, it is time to do re-encoding, in order to effectively use, reduce capacity, the use of AVS software will cut down the black side. 1920 * 1080 resolution, such as a ratio of 1.78:1 the film, the actual content was 2.35:1 wide screen, to remove the black edges, compared with 1980 * 816. Deformation technique can also be used down to 1440 horizontal pixels, and finally became a 1440 * 816.

Video encoding: H.264, VC-1, MPEG-2, X264

Present, the BD and HD DVD is widely used on high-definition video encoding formats are H.264, VC-1 and MPEG-2 three, from the compression ratio and performance requirements on the hardware, then sort, H. 264> VC-1> MPEG-2, while the performance is not an absolute quality, in general, VC-1 is quite good. H.264 is the ITU-T (International Telecommunication Union) and ISO / IEC MPEG to develop, often also known as AVC. Now there is a format called the X264 is actually a variant of H.264, which provides a free, open source encoder, is common in HDre and HDRip format. Simply put, H.264 is a standard, the implementation of this standard X264 is a specific product. VC-1 is dominated by Microsoft, a coding format in hardware performance on demand and video size to achieve a better balance, and MPEG-2 based on the mature technology in the field of early high-definition wide range of applications.

Track format: DD5.1, DD Plus, Dolby TrueHD, DTS, DTS HD, LPCM

DD5.1: that the traditional Dolby DIGItal 5.1 (Dolby Digital 5.1, AC-3), it can provide entry-level multi-channel stereo line experience. DD5.1 ??compression rate is very high, a lower coding rate (the highest is only 640Kbps), in high-definition audio enthusiast applications inevitably stretched. Small footprint, easy to network transmission is the DD5.1 ??track two advantages.

DTS: DTS is "Digital Theatre SySTem" abbreviation, are lossy compression techniques. Compared with the DD5.1, DTS encoding rate of 1.5Mbps or more, to achieve better audio playback.

DD Plus: Dolby Digital Plus, you can also write "DD +", it is now common in high-definition audio technology applications, it has a number of channel 7.1 or above, a wide range of code rates up to 6Mbps. DD Plus can do both sound quality and capacity, high-definition has been widely recognized by the industry for high-definition broadcast-level applications.

Dolby TrueHD: It uses a 100% lossless compression coding, the encoding rate of up to 18Mbps full-band channels and eight 24bit/96kHz. The higher the encoding rate, Dolby TrueHD audio track storage space, bandwidth requirements of transmission is quite amazing, it is difficult for broadcast systems are.

DTS-HD: DTS-HD technologies 7.1-channel as a starting point, the maximum 32-channel surround sound playback, sampling rates from 8kHz to 192kHz, coding rate of up to 1.5Mbps. Dolby TrueHD DTS HD is the most powerful competitors in high-definition video market has a good prospect.

LPCM: LPCM linear pulse code modulation (Linear Pulse Code ModulatiON) acronym, is a continuous linear sampling the analog signal into digital signals of audio technology. LPCM audio without any compression, which ensure good quality, it also brings a large amount of data.

Package format: TS AVI MKV WMV

We usually understand the above terms of these four high-definition video files into the extension, but more precisely, this should be the most common of the four high-definition video package format. Theoretically, the package format and video encoding formats and audio format there is no necessary link. Now, TS format, the Internet has become the most widely used package format, in the "Remux" sources for the figure to see it that often. Moreover, some of the more high-end audio technology, such as DTS-HD, can only be encapsulated TS format. As for AVI, is the most familiar form of a package, but are lagging behind the specifications, the compatibility of the emerging video coding is poor. MKV and WMV-chip source is relatively abundant, but in general are not as good as TS format, and, PowerDVD does not support MKV encapsulation format.

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