I know that from the publisher template all data is copied to a new publisher. But once created, each publisher has its own player. If now I want to modify the player in all existing publishers (I want to add logo for example) How do I do it?
The same thing happens to me if I want to copy the configuration of one publisher in all the others.
You can use the API to update the player’s UI conf. See https://developer.kaltura.com/workflows/Engage_and_Publish/Player_UI_conf;step=1.
So, for each partner, you should first call uiConf.list(), passing a
KalturaUiConfFilter object (here’s an example using the PHP client):
$filter = new KalturaUiConfFilter();
$filter->objTypeEqual = KalturaUiConfObjType::PLAYER;
then, iterate over all the returned objects and call uiConf.update() on each, passing the object ID and the new config.