Are there filters that can simulate macroblocks and mosquito noise?

[orion44]

Are there filters for AviSynth that can simulate macroblocks and mosquito noise,
to intentionally add video artifacts to the video?

[SaurusX]

There is a filter. It's called MPEG-2.

[DTL]

For realtime solution without intermediate files it may be tested with DirectShow and DirectShowSource to get output of MPEG decoder filter into AVS.

Create required MPEG encoder and decoder DirectShow graph in the GraphEdit/GraphStudioNext (may be FFDSHOW can serve as MPEG-2 encoder and decoder ?) and save as .grf file and load it in the DirectShowSource to build and run graph.

[orion44]

If a video looks too clean, are there filters that can make it look more 'dirty', or that can add texture to the video?

[DTL]

AddGrain() plugin http://avisynth.nl/index.php/AddGrainC

[Selur]

F2QSharp might be worth a look,...

[kedautinh12]

You can try FilmGrain+ (https://github.com/Dogway/Avisynth-Scripts/blob/master/FilmGrain%2B.avsi)

[orion44]

You can try FilmGrain+ (https://github.com/Dogway/Avisynth-Scripts/blob/master/FilmGrain%2B.avsi)

Wow, this looks like an advanced high-quality filter.

Can this filter be used on DVD movies, or is it only suitable for 1080p and UHD videos?