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Old 15th February 2016, 22:30   #13  |  Link
asaleo
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Join Date: Mar 2013
Posts: 27
ffmpeg, virtualdub and histogram

Quote:
Originally Posted by shekh View Post
Maybe I get you wrong, but for me the process is two steps like this:
1) Get picture (this is the work for input driver). Here its enough that picture is preserved without any extra loss
2) Improve picture with filters

So yes having (1) done right does not mean it cannot benefit from levels and other filters. What problem do you want to solve?

Normally without any filters applied both panes must be identical.
You talk about pictures, I do not understand.
I open a mp4-file with virtualdub and get it in two windows.
Comparing the videos in window 1 and 2 shows the same video as long as no filter is applied.
When I apply AutoLevel v1.2 filter I can see that my video in window 2 changes. I my case the window 2 then shows better quality, fresher and better colours.
What effect can you see applying the AutoLevel v1.2 filter.
Regards
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