Blooming America
Chapter 652 Video Compression Technology and Strategy
In January 1971, OnTee took an intense development stage - the development of 32-bit CPU has entered a critical juncture.
At this time, Kay Wein also personally took the four ~ Thunder laboratory, which was for his first 32-bit system CPU - Capricorn.
The 32-bit system development architecture is a new architecture.
The nuclear detection unit is integrated into one, which is a very important function of the Capricorn.
- Of course, the premise of hard solution is possible after studying video compression formats.
Although now On Tee has studied digital video technology, this uncompressed video is not used to perform complex work such as information transmission.
What is the video encoding, Catherine understands, but what is the specific algorithm, the Catherine is a bit in this regard.
Column, the disease in the 32-bit CPU is not the problem of hardware, but is a compressed algorithm. If you can solve this problem, then things will undoubtedly be much simpler.
To put it, the compression of the video is also a very great understanding.
Don't look at the 21st century, what, WMV, RM, MKV and other formats have a large line, but in fact, it is very difficult to create digital compression coding.
The compression and calculation of the video is very powerful. In general, Catherine is known, probably 320 × 240 resolution complete an hour's capacity to compress the capacity of 1 such terror.
Of course, in that, the quality of the image will deteriorate, and it is not a general difference.
The so-called video coding method refers to the way to convert files in a video format into another video format file through a specific compression technology.
In the 21st century, the most important codec standard in video streaming has an international community's H261, H263 - Generally, the so-called MKV format HD, is used in such encoding.
Original, non-compressed video files, a few minutes of time capacity can have a few small movies don't say blue light, even now the fluorescent dish in theoretical state is only barely able to have ED.
So video compression is necessary.
On TEE research now,
This is the M-JPEG technology that is the decoding chip integrating in the computer.
Although Catherine is not very clear about the algorithm of this technology, the general direction is still known.
For the current most concerned, Catherine is the most covered, it should be MPEG-1 technology.
MPEG is an abbreviation for the activities of the event image (NG-Tune - Up, 1988
Established.
The MPEG-1 is a video compression mode that is used in history in history.
MPEG-2 is the first video and N-band loss compression standard developed by MPEG organization. The video compression algorithm is done in 1990. At the end of 1992, MPEG-1 was officially approved to become an international standard. One 1 is a video and audio compression format customized for 7 disc media. A 70-minute CD disc transmission rate is approximately.
- As for the DVD, the use of the use is MPEG-2 technology.
And MPEG-1 has a sister technology, which is M-JPEG technology, which is one of the technologies of Catherine's public relations.
M-JPEG (N-N --- Up) technology, ie, running motion, image (or frame-by-frame) compression technology.
M-JPEG is unlike MPEG, because it is not used by inter-frame encoding, it is easy to edit with a non-line xìng editor. MJPEG's compression algorithm is inherited by MPEG, and the function is very powerful to send high quality pictures, generating full animation videos.
The so-called group is an international organization specializing in multimedia, video compression technology standards, including more than 400 experts from nearly 30 countries, more than 200 companies and organizations.
But unfortunately, these will only appear in 18 years, Catherine can wait, so I want to do what I can only come.
The reason is to study this technique because M-JPEG technology is often used in the simulated video signal "translation" of the television camera of the circuit, and is stored on the hard disk. Turntable, this technology can be said to be analog video to become a digital video "Skill Tree".
Overall, M-JPEG and MPEG-1 are future mainstream technologies, but the fatal weakness of both is that hard drives are costly and cannot meet the needs of security and real-time recording.
However, from the perspective of history, these two technologies are all "basic skills" that they must face, although the power of fireballs is very low, but the Master is often to learn this magic. This is not they like, but this is indeed "front technology."
In addition, Catherine is not much about things.
Perhaps the hard drive is not strong, but the disc technology has been mature, so video is fully feasible in the disc.
Therefore, "Science and Technology Tree" must be lit, so, in order to carry out behind the research ...............
In the history of Catherine, the M-Mining of the M-Dynamic Image Expert Group was in the 21st century.
JPEG and International Standardization Organizations The MPEG series of MPEG series of MPEG images of the MPE image expert group can be said to be the same as the two mountains, and there is also a wide application on the Internet and REAE- R
, Microsoft's WMV and APPEE's ME, etc.
However, Catherine also knows that there is a little different from the national conditions of China and foreign countries. In the case of the Chinese, the most popular is the RMVB format, but this format will produce problems such as infringement in Europe and America. These rigid solutions such as infringement can be seen from Europe and America. I can see it in Europe and America. Many of the video formats and the Chinese country have some differences.
However, Catherine this time, the only "brought theism", although there is no understanding of the algorithm, the advantages of each video format, Catherine still laughs.
Now Catherine continues to have a simple, high compression ratio algorithm.
Columns, the simulation video is only the power of the power, the cloud system needs a digitized real mode that is at least when playing a movie.
However, the cloud system client itself is not able to decode the development between rush, and it is also difficult to apply your own product.
But if you are in other occasions, it can be different.
The main disadvantage of H-JPEG is that the compression efficiency is low, and the M-JPEG algorithm is compressed according to the content of each frame image rather than according to the difference between the adjacent frame images, thus causing a large amount of redundant information being repeatedly stored. The space that stores is large to 8 to 15 kB per frame, preferably 3k bytes per frame, but if there is a high compression ratio, the video quality will be severely reduced.
However, this weakness of M-JPEG in the use of high-quality use conditions is not very strict, and it has a more good xìNG price.
The advantage of this video is in a baby monitoring room, a digital monitor, and more, it is important to ensure that the screen is very important.
As one of the scientific trees that must be lit, Kailing Lin is very important for this product.
The new generation of cloud systems are now definitely unable to use the current analog video mode again.
Although the bandwidth is more than the bandwidth, the topic is obvious to see the burden on the server is unimaginable.
Although M-JPEG is not suitable for video of cloud system, it also has the meaning of reference.
And it is very vast and very promising, you have to know that the camera and monitor market is also very vast.
As for MPEG technology, it is more ideal.
But to say, MPEG also has many shortcomings. First, the compression ratio is not large enough, it is still good, but the problem is large when the problem is preserved, but the hard disk investment is large and the hard disk failure and maintenance is more distressed. In particular, Catherine's time, the hard disk capacity has been "MB" this unit, it is already very cow.
Second, the image clarity is not high enough. Since MPEG-1 maximum sharpness is only 352 × 288, other factors such as capacity, simulated digital quantization loss are not high.
In terms of the video itself, if there is not much loss of the analog TV, the analog TV can also spike MPEG-1.
However, after all, future D and DVD technology can be used in this technology. For civil sector, this is clear that the Sè outlook is also an unlimited.
"Capricorn will become the center of the new generation of audio-visual entertainment."
Kailing said this.
"The era of simulation video is about to end after it has experienced its glory, and we have to face it is the era of digital technology, digital technology will become the mainstream of the future!"
Catherine said that this is said in mobilization.
Capricorn first does not push into the civil market, but use in business, medical fields, it is certainly very good.
The cloud system is now basically satisfied with a demand for the "unity", but this requirement has not changed.
In this case, even if you come up with new technologies, it is not necessarily recognized, and at that time, you can don't pay attention.
If you are commercial, it is different.
In particular, medical care is a class, if it is this, it is certainly useful.
From the high-end to the low end, then slowly popularize, this is the strategy of Catherine.
In the end, the era of digitization will arrive ...! .