Do you really know what aspect ratio is?
It is simple calculation from video's length and width division.
To enlarge a 1920 x 1080 (16:9) Blu-ray video to fit in a 2560 x 1440 (16:9) monitor, the video aspect ratio is 100% identical to your monitor's aspect ratio.
Selecting Keep aspect ratio, or not select keep aspect ratio won't cause any differences in full screen playback.
Why there should be any black bars in playback when the video's aspect ratio is identical to the monitor's aspect ratio?
---
Theorectically, there is NO non-16:9 commercial Blu-ray movies existed in the world because the standard specification of a Blu-ray video is in 1920 x 1080 pixels and 16:9 aspect ratio.
For some of 2.35:1 produced movies, to avoid any video distortion and correctly meet the Blu-ray video specification, the movie manufacturers will put the "2.35:1" video with black bars on top and bottom sides into the standard "16:9" Blu-ray video frame.
So, are the Blu-ray movies you played in powerdvd 2.35:1 produced?
This information will be printed on your Blu-ray movie box back.
If there is no 2.35:1 logo on the box, this movie should be encoded with a normal 16:9 video without putting any additional black bars.
--
VLC and MPC-HC does NOT support commercial Blu-ray movie playback.
If they play a "16:9" video by keeping video aspect ratio on a "16:9" monitor in full screen mode, and the black bars are displayed during the playback, the black bars are program bugs that need developers to fix.
Take out your pen and paper that has already disposed in your campus life, and use a ruler to draw a 16:9 square to emulate how the video will be enlarged to fit in full screen on a 16:9 monior.
This message was edited 1 time. Last update was at Jul 11. 2019 06:51