Basic knowledge:
What is the difference between HD player, web player and hard disk player? In fact, this is three different ways of saying the same thing. We can see the evolution of the player's technology from these three ways. First, the hard disk player is a generic term. When this product first appeared, the purpose was to play audio and video files stored in the hard disk. Therefore, the hard disk player was mainly exported to Europe and the United States. With the popularization of high-definition television and the development of high-definition decoding technology, the video resolution of the hard disk player can be gradually increased from 576P to 1080P, which is full HD (FULL HD), only began to call it HD player. After that, the high-definition player was gradually accepted in the domestic market, the market competition became more and more fierce, and various experimental functions emerged in an endless stream. Finally, the high-definition player with network download and network online playback function broke out and became the mainstream of high-definition players. Some people call it a web player. This article uses an all-embracing name: HD network hard disk player, hereinafter referred to as high-definition player.
In fact, Full HD (FULL HD) 1080P is not the pinnacle of television definition. The resolution of Super Hi-Vision Ultra High Definition Video System developed by NHK in Japan is 7680×4320 pixels, which is 16 times that of FULL HD pixels. In two or three years, demonstrations were performed in several venues using large screens with diagonals of 450 inches and 600 inches.
The resolution of the video that can be decoded by the player will be different due to the different formats of the video, so let's introduce the commonly used video formats below. In terms of video formats, the easiest to confuse is the compression format and the encapsulation format. Here I try to explain it to everyone.
There are dozens of existing video compression formats, and for better storage and transmission of these files, various standardization organizations have set different file encapsulation formats (containers) to put video, audio and subtitles in one file. . Here is a simple analogy. The source of the film pressed in a certain format is water. The package format is the bottle, what shape the bottle will be, and what shape the water will become, but the water is water after all. Here are some common video formats.
Compression formats include RealVideo, MPEG1/2/4, DivX, XviD, H.264, WMV, VC1, AVS, Motion JPEG, etc., among which H.264, MPEG2/4, and VC1 are common Full HD video compression formats.
Package formats (containers) include RM/RMVB, MPEG/MPG, DAT, VOB, 3gp MKV, MOV, AVI, ASF, FLV, OGG, M-JPEG, TS, TP, and the like. AVI, TS, TP, and MKV are commonly used HD video encapsulation formats.
Due to the lack of core technologies, the convergence phenomenon of domestic high-definition players is very obvious. Many well-known brands at home and abroad are also in Shenzhen, and may even be purchased and produced in the same processing plant. Differences between players of different brands based on the same chip are not Big. So when it comes to shopping, the most important thing is to figure out your needs and buy a player that suits you:
Because the high-definition player's network function is very useful, the elderly can find serials, women can find Korean dramas, children can find cartoons, and a large number of domestic and foreign large-scale movies can be ordered on demand. The cheapest L9 based on the RTD1185 chip is less than L9. 400 yuan, so based on the RTD1185 chip machine currently accounts for the vast majority of high-definition player sales, RTD1055 machine has gradually marginalized.
In addition, the drive capability of HDD enclosures is also very important, due to the large number of HDD enclosures on the market, and the differences between them. Poor quality hard disks are prone to dropped calls during playback, and even hard disks are not recognized at all. The drive of the mobile hard disk depends not only on the output voltage and current of the USB port, but a factor that is easily overlooked by everyone is the USB cable of the hard disk configuration. Since the theoretical transfer rate of USB2.0 is as high as 480 Mbps, there is a very high requirement for the copper wire and shielding layer of the USB cable. Many USB cable suppliers use inferior copper wires and shields in order to reduce costs, causing hard disk connections to be interrupted even when the hard disk supply voltage and current are sufficient. Therefore, when buying, please try to choose the original USB wiring brand.
What is the difference between HD player, web player and hard disk player? In fact, this is three different ways of saying the same thing. We can see the evolution of the player's technology from these three ways. First, the hard disk player is a generic term. When this product first appeared, the purpose was to play audio and video files stored in the hard disk. Therefore, the hard disk player was mainly exported to Europe and the United States. With the popularization of high-definition television and the development of high-definition decoding technology, the video resolution of the hard disk player can be gradually increased from 576P to 1080P, which is full HD (FULL HD), only began to call it HD player. After that, the high-definition player was gradually accepted in the domestic market, the market competition became more and more fierce, and various experimental functions emerged in an endless stream. Finally, the high-definition player with network download and network online playback function broke out and became the mainstream of high-definition players. Some people call it a web player. This article uses an all-embracing name: HD network hard disk player, hereinafter referred to as high-definition player.
Although the pace of high-definition players to replace DVD players is getting faster and faster, there are still many friends who do not know what the high-definition player is for. In order to help more friends know the high-definition player, so write this entry-level article.
The so-called high-definition, refers to the video resolution, the following are some of our common video resolution:
352×288: It is equivalent to the PAL system VCD image quality. Now some mobile phone videos are at this resolution, and it looks terrible on TV.
640×480 interlaced (480i): This is equivalent to the picture quality of analog TVs. Since analog TVs have weak anti-interference ability and are prone to snowfall, they have gradually ceased broadcasting in China.
720×480 line by line (480P): equivalent to the resolution of NTSC DVD.
720 × 576 line by line (576P): equivalent to the PAL system DVD resolution, more common in China, the national standard digital TV is also this resolution.
1024 × 576 line by line (576P): The main difference with PAL DVD is the screen size is 16:9, suitable for friends who bought 16:9 TV.
1280 × 720 line by line (720P): students pay attention, this is the beginning of true high-definition, called the international standard high-definition, below this resolution can not be called high-definition.
1920×1080 interlaced (1080i): This is also high definition, but by no means Full HD, its bit rate is similar to that of 720P. The difference is that 1080i is better than 720P when displaying static images, and is worse than 720P when displaying dynamic images. . Our national standard HDTV is this resolution.
1920 × 1080 progressive (1080P): Full HD, English abbreviation FULL HD, is the standard used by Blu-ray players, but also the ultimate goal of many movie enthusiasts chase. At present, 1080P Full HD TVs have entered more and more homes, but there is no corresponding program source program for broadcast and television, which undoubtedly won a valuable living space for Full HD HDD players.
640×480 interlaced (480i): This is equivalent to the picture quality of analog TVs. Since analog TVs have weak anti-interference ability and are prone to snowfall, they have gradually ceased broadcasting in China.
720×480 line by line (480P): equivalent to the resolution of NTSC DVD.
720 × 576 line by line (576P): equivalent to the PAL system DVD resolution, more common in China, the national standard digital TV is also this resolution.
1024 × 576 line by line (576P): The main difference with PAL DVD is the screen size is 16:9, suitable for friends who bought 16:9 TV.
1280 × 720 line by line (720P): students pay attention, this is the beginning of true high-definition, called the international standard high-definition, below this resolution can not be called high-definition.
1920×1080 interlaced (1080i): This is also high definition, but by no means Full HD, its bit rate is similar to that of 720P. The difference is that 1080i is better than 720P when displaying static images, and is worse than 720P when displaying dynamic images. . Our national standard HDTV is this resolution.
1920 × 1080 progressive (1080P): Full HD, English abbreviation FULL HD, is the standard used by Blu-ray players, but also the ultimate goal of many movie enthusiasts chase. At present, 1080P Full HD TVs have entered more and more homes, but there is no corresponding program source program for broadcast and television, which undoubtedly won a valuable living space for Full HD HDD players.
In fact, Full HD (FULL HD) 1080P is not the pinnacle of television definition. The resolution of Super Hi-Vision Ultra High Definition Video System developed by NHK in Japan is 7680×4320 pixels, which is 16 times that of FULL HD pixels. In two or three years, demonstrations were performed in several venues using large screens with diagonals of 450 inches and 600 inches.
The resolution of the video that can be decoded by the player will be different due to the different formats of the video, so let's introduce the commonly used video formats below. In terms of video formats, the easiest to confuse is the compression format and the encapsulation format. Here I try to explain it to everyone.
There are dozens of existing video compression formats, and for better storage and transmission of these files, various standardization organizations have set different file encapsulation formats (containers) to put video, audio and subtitles in one file. . Here is a simple analogy. The source of the film pressed in a certain format is water. The package format is the bottle, what shape the bottle will be, and what shape the water will become, but the water is water after all. Here are some common video formats.
Compression formats include RealVideo, MPEG1/2/4, DivX, XviD, H.264, WMV, VC1, AVS, Motion JPEG, etc., among which H.264, MPEG2/4, and VC1 are common Full HD video compression formats.
Package formats (containers) include RM/RMVB, MPEG/MPG, DAT, VOB, 3gp MKV, MOV, AVI, ASF, FLV, OGG, M-JPEG, TS, TP, and the like. AVI, TS, TP, and MKV are commonly used HD video encapsulation formats.
HD network hard disk player to buy articles
The price of players on the market ranges from hundreds to thousands, plus the variety of manufacturers' propaganda is dazzling. Here's how to understand the HD player through the chip level.
At present, there are three main manufacturers of high-definition player chips on the market. Sigma design is the Taiwan company of the United States, Realtek, and Amlogic are Taiwan companies. It is a bit circumscribed. Here's a brief description of their products:
Sigma design is a traditional high-definition chip supplier. Many Blu-ray players and high-definition television receivers are based on Sigma design chips and can decode virtually all HD audio and video files except the RM/RMVB format. There are 3 chips still in production: 8634, 8654, 8655. Due to the high penetration of RM/RMVB in China, the contradiction between Sigma design and realplayer has become its Achilles heel. With the high price, the cheapest model based on the Sigma design 8655 chip is in the thousands. Above, it is mainly exported to Europe and the United States, but it is rare in the domestic market.
At present, there are three main manufacturers of high-definition player chips on the market. Sigma design is the Taiwan company of the United States, Realtek, and Amlogic are Taiwan companies. It is a bit circumscribed. Here's a brief description of their products:
Sigma design is a traditional high-definition chip supplier. Many Blu-ray players and high-definition television receivers are based on Sigma design chips and can decode virtually all HD audio and video files except the RM/RMVB format. There are 3 chips still in production: 8634, 8654, 8655. Due to the high penetration of RM/RMVB in China, the contradiction between Sigma design and realplayer has become its Achilles heel. With the high price, the cheapest model based on the Sigma design 8655 chip is in the thousands. Above, it is mainly exported to Europe and the United States, but it is rare in the domestic market.
Realtek is the main supplier of the domestic high-definition chip market. The largest shipments are mainly RTD1185 and RTD1055. Among them, the 1185 is a new generation product of 1073. The frequency is increased from 400MHZ at 1073 to 500MHZ. It supports 1080P high-definition playback and is compatible with almost all mainstream video formats. It is even better than sigma's 8655, and it also supports Internet functions. The price is also very close to the people, only 500 yuan, so it is the most mainstream of a chip. The RTD1055 and RTD1185 have nearly the same decoding capability. They simply do not use the Internet. The price of the entire machine is currently around 300 yuan. There is also a RTD1283, the same frequency as the 1073 is 400MHZ, but more than recording this relatively tasteless feature, the price has to 800 +, so the shipment is not.
Amlogic recently declined rapidly because of their high-definition chips are a little bit off, the main high-definition chip 8626H due to design flaws, can not support VC1 decoding, so despite the entire machine price is only 300 +, the market is shrinking. Follow-up research and development of high-definition 8726 chip is very powerful, but also supports the Android system, but unfortunately only listen to the stairs, not people.
Amlogic recently declined rapidly because of their high-definition chips are a little bit off, the main high-definition chip 8626H due to design flaws, can not support VC1 decoding, so despite the entire machine price is only 300 +, the market is shrinking. Follow-up research and development of high-definition 8726 chip is very powerful, but also supports the Android system, but unfortunately only listen to the stairs, not people.
Due to the lack of core technologies, the convergence phenomenon of domestic high-definition players is very obvious. Many well-known brands at home and abroad are also in Shenzhen, and may even be purchased and produced in the same processing plant. Differences between players of different brands based on the same chip are not Big. So when it comes to shopping, the most important thing is to figure out your needs and buy a player that suits you:
1. Do you need network function? The network function of high-definition player mainly refers to online demanding of movies and TV dramas. The content is very rich, and it is very convenient to use. However, due to the status quo of the domestic Internet, there are sometimes dead links and unacceptable friends. It is still recommended to use a computer to download to the hard disk box, and then watch it on the TV through an HD player. Friends who don't need network function can choose the RTD1055 chip's machine. Currently the best sellers are the Philips HMP3000 and the picturesque R2. There is no difference in function and quality. The only difference is that the price difference is a big one, a 699. Yuan, a 299 yuan, can not help but lament the people of the Chinese brand...
Because the high-definition player's network function is very useful, the elderly can find serials, women can find Korean dramas, children can find cartoons, and a large number of domestic and foreign large-scale movies can be ordered on demand. The cheapest L9 based on the RTD1185 chip is less than L9. 400 yuan, so based on the RTD1185 chip machine currently accounts for the vast majority of high-definition player sales, RTD1055 machine has gradually marginalized.
2, whether you need to record function The recording function is developed when the number of programs that can be seen is not much, mainly for the timing of the time, but do not miss the wonderful program. In recent years, the sources of television programs are very rich, and many channels have programs on the Internet to look back, and there are recording function players are expensive, so the recording function gradually became a tasteless. At present, the main market is Europe and the United States where copyright management is relatively strict, and domestic markets are basically limited to enthusiasts. High-definition players that support recording functions are basically based on the RTD1283 chip. The recording effect is better and the playback is stable. The main models are the picturesque R9 and Derek 290. The one with the mother's right, the cheaper one is right.
3, whether you need built-in WIFI
The RTD1185 chip supports both built-in wireless modules and external wireless network cards. Because of the poor ability of wireless transmission through the wall, it is easy to get stuck during online playback. Generally, it is recommended that wireless routers and players be within 6 meters of each other and are not used by users. If possible, use a wired connection as much as possible.
The RTD1185 chip supports both built-in wireless modules and external wireless network cards. Because of the poor ability of wireless transmission through the wall, it is easy to get stuck during online playback. Generally, it is recommended that wireless routers and players be within 6 meters of each other and are not used by users. If possible, use a wired connection as much as possible.
Because adding a WIFI module requires more than 100 yuan, and buying an external wireless network card requires only half the price, and the effect is better than the built-in, so some customers also choose their own wireless network card, the current market topology music E6 wireless network card .
Some manufacturers on the market choose built-in WIFI, such as the picturesque V5, and some manufacturers leave the option to customers, such as happy to see the L9, so that customers decide to use a wireless network card connection or wired connection.
Some manufacturers on the market choose built-in WIFI, such as the picturesque V5, and some manufacturers leave the option to customers, such as happy to see the L9, so that customers decide to use a wireless network card connection or wired connection.
4, Whether or not you need a built-in hard disk The built-in hard disk player will be more convenient when you carry it, but since the main chip of the player will generate heat and the hard disk itself generates more heat, two heat sources crowded in a narrow space will cause temperature. Rapid rise. Hard disk work at high temperatures will greatly shorten the service life, while the main chip will work at high temperatures, and it will also cause mosaics and jams, so the general internal hard disk model will increase the fan. Everyone knows that the use of computer fans will have a buzzing effect for a long time, which will affect the audiovisual experience. Therefore, a friend who does not have a portable requirement is advised to choose a player for an external hard disk as much as possible.
In addition, the drive capability of HDD enclosures is also very important, due to the large number of HDD enclosures on the market, and the differences between them. Poor quality hard disks are prone to dropped calls during playback, and even hard disks are not recognized at all. The drive of the mobile hard disk depends not only on the output voltage and current of the USB port, but a factor that is easily overlooked by everyone is the USB cable of the hard disk configuration. Since the theoretical transfer rate of USB2.0 is as high as 480 Mbps, there is a very high requirement for the copper wire and shielding layer of the USB cable. Many USB cable suppliers use inferior copper wires and shields in order to reduce costs, causing hard disk connections to be interrupted even when the hard disk supply voltage and current are sufficient. Therefore, when buying, please try to choose the original USB wiring brand.