Il giovedì, 13 gennaio, 2005 at 11:53:25 +0100, Mattia Scrisse:
> Ciao a tutti,
>
> qualcuno sa come calcolare i paramentri per il clip e lo zoom
> da passare a transcode? Un po' come fa dvdrip.
> Non c'è qualcosa di automatico come il filtro cropdetect di mplayer?
>
>
> --
> Saluti
> Mattia
transcode ... -J detectclipping ....
man transcode
...
detectclipping ‐ detect clipping parameters (‐j or ‐Y) detectclipping was written by Tilmann Bitterberg, A’rpi. The
version documented here is v0.1.0 (2003‐11‐01).
This is a video filter. It can handle RGB and YUV mode. It can be used as a pre‐processing or as a post‐pro‐
cessing filter.
· range = %u‐%u/%d [default 0‐4294967295/1]
apply filter to [start‐end]/step frames
· limit = %d [default 24]
the sum of a line must be below this limit to be considered as black
· post (bool)
run as a POST filter (calc ‐Y instead of the default ‐j)
Detect black regions on top, bottom, left and right of an image. It is suggested that the filter is
run for around 100 frames. It will print its detected parameters every frame. If you don’t notice any
change in the printout for a while, the filter probably won’t find any other values. The filter con‐
verges, meaning it will learn.
...
dai un'occhiata anche agli altri filtri: ci sono delle chicche interessanti
e utili da scoprire :-)))
--
Ciao Umberto
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