Aozora Bunko (http://www.aozora.gr.jp/) is the only legitimate source I know of for ebooks (and they are free). Long term it would be really great to get some Japanese publishers to commit to ebooks, but I know that historically they have been strongly, publicly resistant.
The Wakaru app does allow ebooks reading with a dictionary, but I always found it clunky and I don't think it allows easily generating cards from a book, the dictionary was less useful than yours looks, and it doesn't learn your vocab over time.
For audiovisual context, I'm really thinking of:
- images to match vocab items (potentially auto-sourced from a Creative Commons licensed image search engine)
- images from articles to match sentences from articles
- sound clips to match text taken from audio captions
- video clips OR audio clips + screenshots to match sentences from video subtitles
Regarding image rights, I would say that there is a huge amount of stuff in the public domain or liberally licensed (e.g. on Mediawiki). But you could also allow the user to add their own images, where they take responsibility for making sure they have the rights.
Yeah, unfortunately I find the content in Aozora Bunko not all that interesting. Or at least, I don't know how to find good content in it. I actually built a proof-of-concept of a "Books" tab in Nihongo using Aozora Bunko, but I found it sort of unsatisfying, so I never pursued it further. I haven't used Wakaru before, I'll have to check that out.
I'll explore the audiovisual ideas more, that's pretty interesting, thanks. I'd love to have user-generated content in the app, like the ability to share decks. Seems like that could be a good way to handle image rights as well.
I've got the same problem with finding decent content in Aozora Bunko. For me, the main issue is how to find content which matches my level (actually being interesting being the other problem, but seemingly harder to solve).
I set up a really hacky "grader" algorithm and run it on a bunch of the Aozora Bunko books, then put them online [1]. The very "easiest" books are kinda boring, but it is certainly easier finding usable material in that list than looking in Aozora Bunko itself. The one I've found most interesting so far is 銀河鉄道の夜 [2]
I've heard of Memrise, but haven't really spent any time playing with it. In fact, I just checked my phone and it looks like I downloaded it at some point and never opened it. Adding it to my list to check out, thanks!
The Wakaru app does allow ebooks reading with a dictionary, but I always found it clunky and I don't think it allows easily generating cards from a book, the dictionary was less useful than yours looks, and it doesn't learn your vocab over time.
For audiovisual context, I'm really thinking of:
Regarding image rights, I would say that there is a huge amount of stuff in the public domain or liberally licensed (e.g. on Mediawiki). But you could also allow the user to add their own images, where they take responsibility for making sure they have the rights.