I have integrated the ECL( External Content library) to the Tridion. Here i have three basic ECL item named as Image,Video,Document.
Now for every ECL item we have created the External metadata by overriding the MetadataXMl property from IContentLibraryMultimediaItem Interface. so every time when we access the item we can have meta data from the External Library.
I have scenario where author want to have different meta data of same ecl item. say for example one image call product.jpg is used on the product list page as thumbnail and on the detail page as large image.
As ecl item is same on both the place.but they have render as different rendition on the page with diffrent purpose. so alt text for both place for same ecl item can be diffrent.
so how we can have different metadata for one ecl item placed on the page in the different section.