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Old 15th February 2016, 22:18   #12  |  Link
asaleo
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Join Date: Mar 2013
Posts: 27
ffmpeg, virtualdub and histogram

Quote:
Originally Posted by raffriff42 View Post
What is this "Tateau-plugin" and where can I get it? It looks interesting.


Did you try VirtualDub's Alias Format filter, Color space=(same), Range=Limited.
This tells VirtualDub to expand the range when converting to RGB internally, without an extra levels conversion step.

Use VirtualDub's Levels filter, Show preview, Sample frame to view a histogram within VirtualDub.

How are you exporting frames - with PNG or TIFF images I assume?
Nice to hear from you raffriff.
I didnīt know of the filters that you proposed.
You are wright of course. I found them and tested them.
Nice to be able to see the histogram within Virtualdub, thanks for that.
I have up till now exported a frame from virtualdub to jpg and opened it in Photoshop Element 12.
I tried your suggested settings but did not get a better video in window 2. I also tried other combinations without getting a better video in window 2
Now it was easier to check the histogram within virtualdub.
Whatever setting I used together with alias format, I did not get a histogram which filled the whole span from 0 to 255.

Histogram for AutoLevel v1.2 however showed a full histogram.
Video in window 2 was also different from window 1
I used another video this time and the difference between window 1 and 2 are too much in this case I think. Have to consider what has happen.
Regards
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