How to open HD player hardware acceleration detailed explanation

Smooth and quality

The release of the new Intel desktop processor, the powerful performance of the Core 2 has made many of the players' pouches unfortunate. However, there are quite a few HD players who say that in order to play HD movies, it is necessary to use the Core 2 processor. It can be said that there are not many users who have such an idea, and such an idea is also a major misunderstanding. For the playback of high-definition movies, it is divided into several stages. The playback is smooth and the playback effect is two completely different. the concept of. For the playback of high-definition movies, the most important thing is to properly play the high-definition movies for the reasonable configuration of the software. Therefore, the smooth playback of high-definition movies is not very demanding on the configuration requirements of the whole machine. In my experience, the CPU of 2G or more with 512M of memory and Geforce 6 series of graphics cards can be played smoothly. Of course, the premise It is the correct setting for the playback software, filters and parameters. To play a good effect, it is completely a requirement for the picture, and these are also based on the premise of smooth playback, so the configuration will be improved. In fact, the author thinks that the best way to improve the picture quality is to upgrade the graphics card. Of course, it is not to upgrade the top monster game cards such as 7900GTX or X1900XTX, because these game cards can only be reflected in high-resolution games. Strong performance, the promotion of high-definition playback is very limited.

So what kind of graphics card will be upgraded to make a qualitative change to the overall playback? Matrox's Magic Day graphics card gives a good solution, the Magic Day graphics card with extreme 2D features and disabled 3D features is The first choice for many graphic design enthusiasts. So for HD playback, which technologies will help? The most obvious technology is 10bit color display. Usually, our graphics card only supports 8-bit color display. What is 8-bit color display? The color display is mainly through 4 The channels are realized by RGBAlphe four channels, and each channel can display the color multiplication is the total number of colors that can be displayed in the whole, except for the Alphe channel, which is a channel indicating the brightness of the color, then the meaning of 8bit is The channels can display 2 to the 8th power, that is, 256 colors, and the three channels are multiplied by 256x256x256=16777216 colors, which is similar to the 16.7M color display, which is also what we usually call true color 32 bits, although Can display these colors, but for the extreme picture performance and color transition, still seem stretched, ordinary users may be accustomed to 8Bit color display and can not imagine 10bit effect. Next, let's explain the meaning of 10bit.

Similarly, the color of the three channels of RGB is displayed as 2x10 colors, that is, 1024 colors. The color that can be displayed is 1024x1024x1024=1073741824 colors, compared with the former in color display. Increased by several orders of magnitude, and the increase in these numbers gives the picture a more delicate level of transition and layering, especially for those blue sky and white clouds. Therefore, it is not difficult to play a high-definition film source smoothly, but to achieve a higher playback effect, it is necessary to improve the overall level of hardware.

Enable KMP Player Hardware Acceleration

Next, the author will give you a demonstration of the impact of settings on HD playback. The machine configuration I use should be very common, AMD Althon64 3200+ (ES version, OC 2.4G), 1GB DDR400, nVIDIA 7300GT, this configuration can be said to be similar to most users' configurations, there are also many friends to the author The reflection is that the configuration with little difference still can't smoothly play the HD source, and there will be frame dropping, snagging, and even mosaic. Then I can say that the dropped frame is a smooth playback problem, while the silk and The mosaic is completely a problem with the settings of the filter. This time, the author used to demonstrate the dark night legend Underworld.1080p.DTS.hdtv, which is a source with more dark scenes and faster picture transition rhythm, which can instantly increase the code rate and improperly set the whole machine. For users, there may be pauses. However, this time we will discuss whether the player has correctly turned on the hardware acceleration mode of the graphics card. It is well known that when the player cannot properly enable the graphics hardware acceleration mode, the entire decoding process will be completed by the CPU, invisible. In the case of increasing the burden on the CPU, this is also the key factor for the high system resource occupancy rate when playing HD media sources. When we use the filter and the splitter settings correctly, we observe the opening and closing. Hardware acceleration In the case of processor load in both cases, the filter we use is nVIDIA Puro Video, and the other settings are default. The playback software used is KMPlayer. Let's first take a look at the processor load after using hardware acceleration.

We can see that the system has been under very high load conditions without hardware acceleration, and this is the first scene, there is no high-speed change scenario, if accompanied by high speed The scene, then it is difficult to guarantee a smooth frame rate.
Next, we can turn on the hardware acceleration function of the graphics card, and there will be a very obvious change. The processor's compliance has been maintained between 10% and 30%. The frame rate of the large scene is quite guaranteed. Even if the load is increased to 50%, there will be no frame loss. After the hardware acceleration function of the player is properly turned on, The effect is very obvious.

Generally speaking, if the load is kept at 50%, it can be judged that all the parameters are set correctly, and different filters will bring different load conditions. I used nVIDIA Puro Video. The filter is matched with the NVIDIA graphics card to keep the load in a satisfactory situation. ATi's X1000 series also has to match the corresponding video filter to achieve better load conditions. So how do you turn on hardware acceleration? Let's take KMP as an example, see the picture below. //This article from the computer software and hardware application network www.45it.com reproduced please specify

In the KMP player, select the "advanced video" option, select in the speed mode, you can open the corresponding hardware acceleration Function, the correct understanding of the player's settings is the right way to play HD.