how to upscale and encode ass subtitle at the same time？

[Selur]

I want to upscale to 1920*1080 like this picture,

Add borders by:

• enabling "Crop/Resize->Base->Letterbox" and setting Width&Height to 1920x1080
  

and encode the ass subtitle out of movie screen at the same time

Assuming you want to embed / hard-code the subtitle:

• enable "Base->Subtitle"
  
• select the subtitle file under "Subtitle->Import->Subtitle Import->Load external subtitle"
  
• enable "Subtitle->Import->Subtitle Import->Embed subtitle in frame"
  
• press "Subtitle->Subtitle Queue->add current subtitle ..."
  

Cu Selur