TServo2049 said:

Also, a word about aspect ratio correction - as I said before, this is a raw telecine of an anamorphic print with no aspect ratio correction, so it is both squeezed by 50% (approx. 1.20:1) and cropped by the telecine operator to fit the 1.33:1 aspect ratio of the video realm. Thus, the image needs to be horizontally stretched 2x, to an aspect ratio of approx. 2.66:1. Unfortunately, VLC doesn't have such an option.

When you do finish v1.0, could you do an alternative 2x stretched version as well? It would have to be horizontally stretched to 1440x480 to preserve the full vertical resolution.

Have you experimented with "force aspect ratio" you enter in a value 266:100 in video preferences and save, and it plays it like that on restart. This is how it looks doing that.

However, if thats not right another thing that might work is use an aspect ratio calculator counting the number of pixels and try to find the correct force aspect ratio numbers to output that number of pixels.