Source of thumbails/logos for channels ?

[MaTheRyS]

Hello.

I wondered where the thumbails/logos of channels are coming from ?
Is there a way to configure the source for these pictures ?

Because most of times they do not show correctly.
Manytimes there are only a few channels with thumbail/logo and the rest with the default logo of vlc. Like the two following images :


I would be cool to be able to change it via the interface but while this is not possible, is there any tricks to do this anyway ?
These pictures are included into vlc or they come from a distant server ?

If they are coming from a distant server, is this possible to find the url of each ? In order to play with host and to point them another place...

Thanks by advance.

[Jean-Baptiste Kempf]

It comes from Google Image, most of the time.

[MaTheRyS]

Ok, thanks for your answer

I was just trying to find it by my way by using Wireshark and i saw that most of french channels logos come from http://cyril.bourreau.free.fr/Vectoriel/ ,but sadly not all the channels are present on this web server.
The url of the logos are hard coded into vlc or vlc use a search engine or something like ?