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View Full Version : How to correct compression artefacts ?


gt13013
30th December 2012, 19:22
Hello,
I would like to compress the videos coming from my digital camera, and by the same way try to correct the compression artefacts that they already have when they come out from the camera.
Here is a preview of these compression artefacts (see around the heads of the birds): http://www.mediafire.com/view/?1434g6wu527psy2
There are probably AviSynth filters that can help to reduce these artefacts, but I was not able to find them.
Who can help me to find a solution?

For more information:
The camera is a Canon PowerShot SX40 HS.
The videos are made in 640x480 resolution, 120 fps (slowed down 4 times).
Original video (2 minutes, 134 MB): http://www.mediafire.com/file/950qquina9wlr68/MVI_1301.MOV
Here is a compressed video (3 MB), almost identical to the original one: http://www.mediafire.com/?x60pffy42d22a0q
I have made this compression with MeGUI, and the following script (I am not sure that the filters are relevant. I use them to compress the others videos from my cameras, and I am generally satisfied with them):
DirectShowSource("D:\MVI_1301.MOV", fps=29.97, convertfps=true)
ConvertToYV12()
Undot()
Tweak(sat=1.25, bright=0, cont=1.0)
Asharp(1,4,-1,hqbf=true)
Thanks for your help.