VLC Android 2:1 aspect ratio always incorrect and video is stretched / without black bars

I am using VLC for Android on an Android TV-Box X98 mini with Amlogic S905W2 SoC. It works in general, but in some videos the aspect ratio is wrong and the image looks stretched. The aspect ratio button is unable to display the correct aspect ratio.

Expected behavior

The video file has a resolution of 1920x960px (2:1 ratio), also called Univisium (https://en.wikipedia.org/wiki/Univisium), and on a 1920x1080p Full HD screen there should thus be small black bars at the top and bottom of the screen so that the aspect ratio is kept.

Actual behavior

The image is stretched. The aspect ratio button only shows a visible difference for 4:3 and center but all other modes don't do anything. It works on VLC on my PC, but not with VLC for Android. It works with other players e.g. KD Player on the Android Box which shows the correct aspect ratio with small black bars.

Steps to reproduce

Just play any 1920x960px (2:1) file which cannot be played back with the correct aspect ratio on VLC Android. It seems like the minimum width shown is just not the actual width of the video.

Screenshot / video

Context

I don't know what else to write here.

App version

VLC for Android 3.4.4

Android version

Android 11

IMG_20220305_214644962_HDR

Device model

Android TV-Box X98 mini with Amlogic S905W2 SoC

App mode

TV I guess?

I tried to reproduce on an nvidia shield with both "Nest fit" and "center" scales and found no issue.

Could you please share a sample?

added Needs more info label

I also tried a 1920x800px file now and it's the same. The image is stretched and no black bars are visible. The aspec ratio button is not able to scale the picture properly.

Could this be a but in relation to the Amlogic S905W2 SoC?

I have exactly the same problem on Chromecast HD. Movies in this format are stretched to 16:9. With square pixels, shouldn't VLC calculate the aspect ratio based on the resolution of the file?

regards, Simon

Could you please share a sample?

mentioned in merge request !2118