How To Increase Volume Until 400% and Play Video in Full Screen Without Black Frame

1) Download VLC Player


Increase the volume :

2) Open any video or music

3) Roll mouse roller up to increase the volume to 400%

4) Roll down to decrease the volume

Play in full screen :

2) Right click at the playing video

3) Video -> Aspect Ratio -> Try all the ratio until you find the perfect one

4) My video default ratio is 16:9

5) The full screen ratio for my video is 16:10 and it perfect

You can see the different after you try it.