[FFmpeg-soc] expand filter (alternative to pad syntax)
vmrsss at gmail.com
Sat May 17 12:46:15 CEST 2008
On 17 May 2008, at 00:56, Michael Niedermayer wrote:
> Dont you think that pad=::::16/9:16 is clumsy as well ...
Yes, it is clumsy to count the :, but not as clumsy as the previous
one, because as a user I have to remember that -1 (rather than say 0
or -2) is the thing to write if I want to let the filter come up with
the value for me.
> what about:
> (here the number of arguments seperates the variants)
Good idea, but I think there are more variants (eg specifying a
padcolor can be used in all the forms, and things like
pad=-32::::16:16/9:white -- pad with a white box 32 bits horizontally
and then extend vertically to get a 16/9 frame, all mod16, etc).
Anyway, at the moment I have modified the code and got the ::: form to
work robustly enough. Perhaps some better idea will come.
> Direct rendering is a key requirement for av filter, filters not
> it properly are not interresting to me and you will have to find
> else to review the patch
> That said i dont care if its commited to soc. To ffmpeg-svn it will
> not be.
Fair enough. I just meant that direct rendering is a problem for
avfilter as a whole, not of this specific filter.
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