Compression Efficiency Comparison between Soft Compressed DVR Card and Hard Compression Card
In terms of video compression, hard compression is better than soft compression. Soft compression card due to the use of CPU compression, consumption of computer resources, a reasonable configuration of the computer is soft compression DVR long-term stable operation of the key. With the market mainstream CPU performance and speed, soft compression processing capacity with the strengthening of the use of ordinary Celeron 1.7G will be able to compress 4-8 Road (352 X 288) real-time, once the future 64-bit Windows operating system available, Soft compression card using cheap AMD64 bit CPU compression video, it becomes a matter of light, compressed 32 real-time will no longer be a problem. By then the soft compression will likely replace the hard compression card.
In the compression ratio, the market is common in a lot of soft compression DVR card is an early foreign products, they are using wavelet algorithm and even MJPEG, consumption of hard disk, network performance is poor, but recently introduced soft compression DVR card is mostly using MPEG-4 Or H.264 algorithm, each road accounted for 30-150M per hour.