Is there any way use this to create an image larger than the one uploaded?
I mean, let´s say you have this:
add_image_size('featured', 968, 309, true);
And the user uploads images smaller than 968 px width.
In this case, images will be less width than 968px, will take the original width value only, since the internal wp engine don´t resize the image more than the original (i guess).