Decoder, splitter, as well as the concept of DXVA

Decoder function is on the video or audio decompression. We know that both the original is the original video or audio, data are very impressive and huge, so we use the encoder to compress them, so that it can facilitate transmission and storage. When playing we will need to restore the picture or sound, which requires decompression, which is decoded. In which more complex video decoder:
Video compression technology, as we have said before there are many, each where there are a lot of official, third-party decoder, various decoder functions, screen, speed vary, but generally fall into two kinds of decoding device: hardware decoder and software decoder.
Hardware decoder is to use the driver brought decoder interface and the hardware itself is connected to the use of the functions carried by the video hardware decoding, which can reduce the load on the CPU in order to achieve smooth playback, as well as enhance the CPU multi-tasking capability.
In addition to hardware, software decoder is a decoder, all but the decoder, its biggest feature is the use of CPU general-purpose processing capabilities of its software decoding. Although the software decoding consuming CPU, but you can modify, upgrade, in the case of sufficient CPU resources is the best choice.
Separator function is to package together to restore the video, and audio out. Before we talked about a lot of packages, each package must correspond to a separator, in order to correct the separate video and audio decoder for decoding.
Separator There are many, under normal circumstances non-standard packaging format, where the regular players do not have the appropriate separator, such as MKV. The more well-known separator moonlight splitter, haali so.