Videoconferencing Factory Help You Compare With The Difference Between High Definition And Standard Definition

Videoconferencing factory help you compare with the difference between high definition and standard definition

What the HD? Is it a clear picture or a record format? 720p, 1080i, or 1080p? These different indicators make it impossible for ordinary users to distinguish between them. Nowadays, many users still stay at the stage of cable television and DVD. They do not know that they only support SD signal sources with more than 500 lines. 

People have lived in standard-definition for decades, not to mention that only about 400 lines of standard definition, even videoconferencing professional videoconferencing cameras (520 lines) are far lower than the HD entry-level 720 lines, Only those high-definition conferencing cameras that cost hundreds of thousands of dollars are fully compliant with the HD 1080i specifications. Therefore, we are now talking about the high-definition because of the scarce sources of programs, on the starting line to lose a very thorough, let alone late HD recovery. You know, the source of high-definition programming can be easily cut off a picture, is a beautiful picture. It has 1,080 effective scanning lines, which is twice that of traditional systems (480 lines in NTSC format and 576 lines in PAL and SECAM formats), enabling clear, beautiful pictures. These pictures with sharp effects can really convey the impact of the screen theme.

HD (High Definition) has five features compared to traditional SD.

1, HD has a powerful error correction function. With MPEG-2 compression methods (or codecs) that use inter-frame compression, the impact of data loss will be much greater than the data loss impact of the DV standard. Therefore, the error correction code of the HDV system is used to achieve a more accurate error correction function than the DV system. Moreover, by translating the DV error correction method only in the track into a multi-track error correction method, the error correction function can be significantly improved, and the fault tolerance to data loss can be greatly enhanced. 

2, HD uses MPEG-2 as the compression codec method. The MPEG-2 compression method for digital broadcasting and DVD can also be used for HDV. Can achieve effective compression while maintaining high-quality high-definition picture. Therefore, using the same bit rate as the DV standard, high-resolution, high-definition picture recording and playback can be achieved. In order to use MPEG-2 to compress a large amount of high-definition picture data, which is much more than SD picture data, a very large signal processing circuit is required. However, due to the development of semiconductors and signal processing technology, the compiler can now be used as a standard for personal devices.

3, HD supports two types of recording system. The HD standard has two types of recording systems: the 720p (progressive) specification and the 1080i (interlaced) specification.

4, HD sound quality is as good as CD. HD's MPEG-1 Audio Layer II is used as audio compression, allowing you to enjoy near-CD sound quality.

HD, an indicator that overrides the traditional 720 × 576 resolution SD signal, it raises the 500-line video frame to 1080 line resolution, and the HD 16:9 wide-screen mode means that it can see 6 times. Details of the original SD program. 1080i is an internationally recognized standard for digital high-definition television, and its image quality is more than twice that of DVD.

Since high-definition television will enter millions of households in the future, it is also a general trend, and supporting high-definition products should also be debut. Video conferencing cameras, high-definition video capture cards and so on are all oncoming trends. The high-definition conference camera can guarantee "authentic" and does not degrade image quality when playing video. According to this standard, high-definition pictures can be recorded on the commonly used DV tape, and the sound quality is better.