What Is the Difference Between CRC and FCS?

Difference between Inter and Intra Frame Compression

Last Updated : 24 Nov, 2021

In Compression, we reduce the size of our data to achieve high efficiency and easy storage. It is quite cumbersome to transfer files having large size so we need to compress it. Compressed file takes less time for data transmission and reduce the cost of storage.

Compression Ratio = B1 / B2

where,
B1 = Total Numbers of bits required to represent data before compression
B2 = Total Numbers of bits required to represent data after compression

There are 2 main types of compression:

Inter Frame Compression
Intra Frame Compression

Difference between Inter and Intra Frame Compression :

Inter Frame Compression	Intra Frame Compression
In this, Data Reduction takes place between the frames. It Exploits redundancy between successive frames.	In this, Data Reduction takes place within the frames. It exploits redundancy within the frames.
It is also known as Temporal redundancy where the image transition is abrupt	It is also known as Spatial redundancy where the image transition is block based.
It requires more Processing time because the computer needs to look at several frames.	It requires less processing time because the computer is dealing with single frame,
A few popular inter frame codec are: H.264-A variant of MPEG-4 MPEG-4 MPEG-2 AVCHD-A variant of H.264 AVC XDCAM-Sony’s baby XAVC-Sony’s new baby	A few popular intra frame codec are: MJPEG-JPEGS bunched together Prores-Apple’s favorite DN*HD-Avid’s baby ALL-I-Found in the newer DSLRs Cinema DNG-Adobe’s baby for raw image sequences.

What Is the Difference Between CRC and FCS?

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