[FFmpeg-user] Noise generator for 360° video

[Michael Koch]

Am 06.07.2024 um 10:44 schrieb Paul B Mahol:
> On Sat, Jul 6, 2024 at 10:40 AM Michael Koch <astroelectronic at t-online.de>
> wrote:
>
>> Does anybody have an idea how to make a noise generator for 360° video?
>> I mean noise (clouds, waves) that looks similar in all directions of the
>> sphere. If I use the new "perlin" source for making an equirectangular
>> video, there are two problems:
>> 1. The left edge doesn't fit to the right edge.
>> 2. There are singularities at the poles.
>>
>>
> Sure there is a way.
> just not using perlin ultra slow filter.

Can you point me to an algorithm? I don't need high speed. Even a very 
slow solution with geq filter would be fine.

Michael