Hardware and software video decoder to decode the difference

Hardware decoder decoding software with our hardware solutions commonly referred to with the software solution, is a concept that will be encountered when watching video via a mobile device.
Software decoding
the current video resolution is much higher than the general video format, this will lead to very high video bit rate requirements. Coupled with the encoding of H.264
high compression rate, the decoding computational complexity is so great that it will directly use conventional CPU decoding, that is, we are talking about software decoding, but this
will greatly consume computing power of the CPU.
Hardware decoder
hardware decoder is a hardware device, an input analog video signal and converts it into a digital signal format for further compression and transmission hardware. It is to decode high-definition video through video graphics acceleration.
Hardware video decoder therefore the CPU can be released from burdensome video decoding operation, so that the computer have the ability to smooth high-definition video.
Graphics GPU / VPU is more suitable than the CPU such a large amount of data, duplication of work low difficulty.
Due to decompress the basic task of all to the graphics chip, CPU can be relieved, easy battle, others take on more tasks, which is especially for users who frequently need to multi-task operation is more important.
There is a hardware decoder is because the audio video data storage by first compression, or the amount of data is too large, and the compression required by certain coding order with minimal storage capacity to the highest quality audio and video data. Thus decoded by the first decoder when the data required for playback.
First of all the difference between the two:
hardware decoder: is the operation of the video decoding performed by hardware, which hardware decoding is carried out by the GPU, the GPU possible to reduce the work load on the CPU decoding and reduced power consumption. Play video out more smoothly, and to extend the time a mobile device to play video;
software decoding: software decoder is decoded by the software itself takes the CPU, it will increase the CPU workload, enhance the power, if the lack of CPU power, the the software will also be affected.
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