The VideoLAN Forums

I am running VLC for Android v3.0.13 on a Fire TV Stick 4K on a LG B8 TV which is standard 4K. Videos with 3840x2160 resolution play perfectly with a correctly displayed aspect ratio / they take up the entire screen without any specific scaling needed, but videos with 3840x1600 OR 3840x1608 resolution play distorted being stretched vertically to 2160, when they should have letter boxing in order to display with their correct aspect ratio that is lower than 2160 vertically.

The Aspect Ratio button in VLC for android toggles between these options: Best Fit> Fit Screen> Fill> 16:9> 4:3> Center - however none of them make the video display correctly with letter boxing. When playing the same file on VLC on windows 10 it plays correctly with letter boxing, the aspect ratio display issue only seems to be issue for vlc for android which is odd. And it only impacts videos that are vertically lower than 2160. All these videos files are H.265/HEVC .mkv files, most are with HDR10, and they are streaming over LAN from a NAS. I should note that when I play these same files from the Fire TV Stick 4K on a TV with 1080p resolution the same issue exists as well. I see a few other people appear to see the same behavior wanted to see if there were any ideas on this. Thanks,

From looking at another thread I tested disabling hardware acceleration and when doing that the videos display as they should with letter boxing, but without hardware acceleration the H.265/HEVC videos are too much for the Fire Stick 4K to handle and it barely plays / just studders. So appears issue may be with the hardware acceleration implementation?

This is a limitation of the Fire TV Stick 4K, that has a bug. We do not have access to one, so we cannot fix that yet.

This is a limitation of the Fire TV Stick 4K, that has a bug. We do not have access to one, so we cannot fix that yet.

Thanks for the update, just let me know if there is anything I can do to help you guys test this.