title: How to save video to custom album?
body: <p>I'm trying to save a video made in an app to a custom album. 
  I've tried the solution proposed on <a href="https://stackoverflow.com/questions/17569505/saving-video-in-an-album-created">Saving Video in an Album Created</a>, however, these blocks are executed asynchronously resulting in my asset in the result block being nil.</p>
  
  <p>I've succeeded in creating the album, writing a video to it doesn't seem to work with the above methods. I have no clue what's going on. Can someone give me a heads up on this?</p>