with none form of compression in video streaming, the network can not transmit the raw data.
also, because of massive document sizes, storing records on the confined potential of disk drives isn’t viable. it’s why we need to apply compression,
mainly in video surveillance systems. video compression removes redundant video statistics, in order that the video record can be transmitted or saved efficaciously. ]
video content is encoded and decoded by using the usage of a video codec technique, inner a box layout,
so the video best is not degraded on the time of shifting over the community. we have a look at the idea and some exclusive forms of video codecs and video boxes at the side of their variations.
what’s video codec?
a codec is a software program used to compress or decompress a digital media report for transmission over a records community. in truth,
a pair of encoding and interpreting algorithms that paintings together is referred to as a video codec,
in order that encoder uses these algorithms to efficiently compress the scale of the video record, after which decoder decompress
it when wanted. some formats include each of those components and others encompass certainly one of them. furthermore, formats are divided into two classes: lossless and lossy codec. in lossless codec all of the records is kept in the original circulation, for this reason the video nice is preserved. on the other hand,
in lossy codec due to the usage of lower data bandwidth and missing some of the original statistics to obtain the first-class compression, the quality could be reduced.
there are extraordinary standards of codec which use specific technologies to encode and decode
the video file related to supposed application. considering that video content that is compressed using one fashionable can’t be decompressed with other standard, exceptional
implementation of video codecs are usually not well matched with each different. due to the fact, one algorithm can not successfully decode the output from another set of rules.
however, imposing many exceptional algorithms in the same software or hardware is possible, so a couple of codecs may be compressed. utilizing exceptional methods
of compressing facts results in variant bitrate, pleasant and latency. the time it takes to compress, send, decompress and display a file, called latency.
how video compression can assist video surveillance?
video compression methods use a codec to lessen or get rid of needless files or frames from video files, without any big degradation in very last video. this makes the video report smaller,
so greater video may be saved on nvr tough drives or files may be kept for longer periods of time.