Reply To: Capture Sizing and Aspect Ratio


If you want to record 720×480 in 4:3 then the scene should be 640×480. But why record in such a low resolution? You should at least let OBS upscale it before encoding if your capture card does not support the higher line modes.

The optimized modes are a special case. The correct aspect ratio for 256×240 in Line2x is 256×2 x 8/7 = 585×480.

For best quality capture you should set your capture card to XRGB format. The default is NV12 which is 4:2:0 so the video is already being chroma subsampled before it reaches OBS.