What is media translation? is this for example image translation? Im running a real estate website, and i see that some images (in mediatranslation) have + and other "pencil". If it is about images, i dont want to translate image, i dont need it, image is an image, i just need to tanslate text. What should i do? (some images have + other pencil, why is that?) Tell us what you are trying to do?
Through the WPML Media plugin, WPML allows you to translate images and other media. You will also be able to provide replacement images for content in different languages and translate the meta texts of those images.
The options for translating media can be found at the bottom of the WPML -> Settings page.
Regarding your questions, by default, WPML uses duplication to make media files available in all languages.
If you use the same posts/pages/property listings (in your case), you will practically need to show the same property image on all languages so you would not need to do anything about this, just let WPML do it's own thing.
This plugin is especially useful for people who want to show different images per language.
I hope I was able to answer your questions.
Please let me know if you need more help with this.