[HELP] How do I change the display aspect ratio?

[Selur]

I wanted to resize a 720x480 video (from an NTSC DVD) to 720x576, to make it match my PAL DVD video footage.

• Read [INFO] About pixel aspect ratios,.. Ideally you also read the linked websites if you don't understand the connection between display and pixel aspect ratio. Since you clearly lack in understanding the difference between PAR and DAR.
  
• load your content
  
• Open Vapoursynth Preview, if your content was properly flagged the preview should look correct.
  
• If the content is no not displayed correctly adjust 'Crop/Resize->Base->Pixel Aspect Ratio (PAR)->Input PAR' until it does.
  
• Properly crop all black bars using 'Crop/Resize->Base->Picture Crop'
  
• Enable 'Crop/Resize->Base->Pixel Aspect Ratio (PAR)->Convert output PAR to' and set it to 'MPEG-2 PAR 4:3 (16/15)' or 'MPEG-2 PAL 16:9 (64/45)' depending on your PAL DVD.
  
• Set 'Crop/Resize->Base->Picture Resize->Target resolution->width' to 720.
  
• Enable 'Crop/Resize->Base->Letterbox' and set Width to 720 and Height 576.
  

This would be the way you convert NTSC to PAL for DVD content while maintaining a proper PAR and get the proper DAR (display aspect ratio).

Cu Selur