 | This article has multiple issues. Please help improve it or discuss these issues on the talk page . (Learn how and when to remove these messages)
|
A video filter is a software component that performs some operation on a multimedia stream. [1] Multiple filters can be used in a chain, known as a filter graph , in which each filter receives input from its upstream filter, processes the input and outputs the processed video to its downstream filter.
Contents
With regard to video encoding three categories of filters can be distinguished:
- prefilters: used before encoding
- intrafilters: used while encoding (and are thus an integral part of a video codec)
- postfilters: used after decoding
