[FFmpeg-user] free software for lut3d filter files?

[Paul B Mahol]

On 12/5/18, Michael Koch <astroelectronic at t-online.de> wrote:
> Am 02.12.2018 um 14:08 schrieb Michael Koch:
>> Is there any free software for creating or editing files for the lut3d
>> filter?
>
> In the meantime I found a nice *.cube generator tool here:
> https://generator.iwltbap.com/
>
> My next question is about the lut1d filter. Unfortunately I didn't find
> much documentation about it.
> Does it use the same *.cube files as the lut3d filter, or does it use
> different files?

Same extension but different content.

> Where can I find a sample or a generator for these files?

On the web.

> How does lut1d work? Are there three different look-up-tables for the R
> G B channels? Or is the same look-up-table used for all three channels?
> Or is there a fourth look-up-table for luminance?

Sorry, but use web search. lut1d filter works similar like lutrgb
filter except its
values are set instead of expression via file.