how to let VideoFrame paint from (0,0) when scale

[Quiccz]

When I try to play a video with a resolution of 640x360 and set my video frame's painter rectangle to (0, 0, 512, 384) while using the aspect ratio mode 'KeepAspectRatio,' it appears to be centered. How can I make it start from (0, 0)?

[ChrisW67]

@Quiccz Compute the size that the video should scale to with aspect ratio preserved then paint it (without Qt::KeepAspectRatio) using that size and not the frame dimension.