[MEncoder-users] to crop or not to crop for DVB sources, aspect ratio issues?

[Nico Sabbi]

Pierre Catello wrote:

> Hi everyone,
>
> I would like to use Mencoder to archive my DVB recording (MPEG2
> transport streams)...
> Keeping the original format is the no brainer option, but of obviously
> it isn't optimal for space saving (black borders).
>
> The problem is that format are often different for TV programs:
> normal 4:3
> 4:3 anamorphic (544x576 -> 720x576)
> 16:9 anamorphic in a 544x576 source
> 16:9 anamoprhic in a PAL source
> 2:35 anamorphic in a 544x576 source
> 2:35 anamorphic in a PAL source
>
> and then all imaginable hybrid formats when the program has been
> already cropped by the broadcaster...
>
> If I crop before encoding, is there a safe way to compute the aspect
> ratio for the player?

-vf crop=...,scale=x:-10
 
 
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