What is MPEG4

MPEG4's object-oriented compression method also makes image detection function and accuracy more fully reflected, because the image detection function makes the DVR system have better video motion alarm function than before.

MPEG4 is a new low-rate, high-compression video encoding standard with a transmission rate of 4.8-64kbit/s. It takes up less space when used, for example, for 352x288 color. The picture, when the space occupied by each frame is 1.3KB, select 25 frames/second, then 120KB for one hour, 10 hours per day, 30 days per month, then 36GB per channel per day, 72GB for two channels, four channels required If 144GB is 8 channels, it needs 288GB, which is obviously acceptable to users.

different compression principles and mpeg1,2

mpeg4 of!

mpeg1,2 file extension mpg or mpeg! and mpeg4 is avi, Microsoft also uses the latest asf format Mpeg4 compression technology!

Regarding picture quality, mpeg2 is better than mpeg4 but huge in size. mpeg4 is more balanced in quality and volume. It is a compromise solution! mpeg4 supports streaming media playback!