[FFmpeg-user] exposure filter

[Michael Koch]

Am 10.02.2021 um 20:20 schrieb Paul B Mahol:
> On Wed, Feb 10, 2021 at 8:14 PM Michael Koch <astroelectronic at t-online.de>
> wrote:
>
>> Hello,
>>
>> in the new "exposure" filter it's unclear in which order the operations
>> are applied. First exposure, then black level? Or first black level,
>> then exposure? Does the filter have a limiter if the result is out of
>> range? These infos should be added to the documentation.
>>
>
> At same time. Doubt that internal stuff is interesting to average joe,
> filter works with floats only. Limiter is not needed.

You can't multiply and add "at the same time". Either you first add and 
then multiply, or you first multiply and then add. That gives two 
different results. The order is important.

Michael