I'm still working on my setup and haven't gotten anywhere. Maybe
simplifying my question will help.
Is there any way to read a single pixel value from a video on the
commandline that can be used as a variable in other filters (ie to
If not, would there be generic template code for a function or filter in
ffmpeg so that I could write one? I know c/c++ but have very little
experience with ffmpeg. Would someone be able to steer me in the right
direction to add this functionality?
Also, to write a function/filter do you have to compile all of ffmpeg, or
is there a plugin system?
Thanks for the suggestion. Those look pretty close, but from what I can
see in the docs, they can't read a single pixel. Am I missing something or
are you suggesting I can modify the code of that filter for my needs?
> 2017-10-05 17:52 GMT+02:00 Joshua Grauman <[hidden email]>:
>> Also, to write a function/filter do you have to compile all of
>> ffmpeg, or is there a plugin system?
> There is no plugin system, you have to add new filters
> to the source code.
> Did you already see the lookup table and equation filters?
> Carl Eugen
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