[FFmpeg-user] Question about dvdsub

[Mark Filipak]

Preface: I turn smpte170m-in-720x480-as-H.262-in-vob, into BT709-in-1920x1080-as-x264-in-mp4.

Question: When I up-scale video to 1920x1080, are the dvdsubs also up-scaled?

Rationale: I'd like to know a way to see a dvdsub, as a jpg for example, both before and after 
scaling the video.

Rationale: I'm looking for ways to edit the dvdsubs in advance of SubtitleEdit's OCR so as to make 
the OCR job both easier (i.e. 'cleaner' and with wider spaces) and more consistent (i.e. uniformly 
sized character bitmaps across all dvdsubs, and eventually, across pgssubs, too).

Thanks--Mark.