VLC for iOS can't recognise files with names containing Japanese characters over FTP
I can reprodude this every time using these steps:
1 - run OS X's (I'm using Yosemite) FTP server with sudo -s launchctl load -w /System/Library/LaunchDaemons/ftp.plist
2 - use any file VLC can recognize, I used a downloaded YouTube AVCHD mp4 video at 720p
3 - duplicate the video file in the same directory
4 - name one "English video" and the other "日本語ビデオ"
4 - open VLC on iOS, connect and browse to the folder with both the files
It'll see both, but the files with the correct size, but the one containing Japanese characters will have no title and will fail to open saying that the format isn't supported. This happens with names containing Latin and Japanese characters together too.