existing photos and videos (only accessible via apple-provided picker dialog)
Are you sure about that? I was under the impression that the Asset Library framework (https://developer.apple.com/library/ios/#documentation/Asset...) would allow one to build their own picker and thus access the existing photos and videos. But I didn't go far enough into iOS yet to try it and see what it really does…
That being said, I can't find an app that allows me to select multiple pictures at once. (you'd think the Facebook app would let you do that) Which is weird because I'm fairly certain that Picasa Web Albums allowed that at some point. (http://itunes.apple.com/us/app/web-albums-a-picasa-photo/id3...) I remember because I specifically bought the app to upload a couple of folders at a time and I don't see myself choosing them one by one… In any case, while the description implies it can, the current version won't let me.
Are you sure about that? I was under the impression that the Asset Library framework (https://developer.apple.com/library/ios/#documentation/Asset...) would allow one to build their own picker and thus access the existing photos and videos. But I didn't go far enough into iOS yet to try it and see what it really does…
That being said, I can't find an app that allows me to select multiple pictures at once. (you'd think the Facebook app would let you do that) Which is weird because I'm fairly certain that Picasa Web Albums allowed that at some point. (http://itunes.apple.com/us/app/web-albums-a-picasa-photo/id3...) I remember because I specifically bought the app to upload a couple of folders at a time and I don't see myself choosing them one by one… In any case, while the description implies it can, the current version won't let me.