Using version 0.9.581

1) I adjusted JD settings to download best video quality. But low quality videos (360p, 240p) are displayed as both flv and mp4. I wish JD just show MP4 (I don't remove flv from the settings, because 480p videos are just FLV) instead of both FLV and MP4.
Example videos:
**External links are only visible to Support Staff****External links are only visible to Support Staff**
**External links are only visible to Support Staff****External links are only visible to Support Staff**

2) This is a rare problem, but still exists. Some videos in YT can not be downloaded with JD, it says "offline not available".
Example videos:
**External links are only visible to Support Staff****External links are only visible to Support Staff**
**External links are only visible to Support Staff****External links are only visible to Support Staff**