[Ffmpeg-devel] cropping + rescaling broken?
Tue Mar 7 12:11:13 CET 2006
Luca Abeni said:
> Hi M?ns,
> On Tue, 2006-03-07 at 10:54 +0000, M?ns Rullg?rd wrote:
>> > Anyway, the result looks bogus again... But now I am beginning to
>> > understand... I was expecting ffmpeg to rescale first and crop after
>> > rescaling, but it looks like it does the opposite...
>> Cropping is supposed to happen first. After that, what remains should be
>> scaled to the requested size.
> Ok, thanks. At least now I know how things are supposed to work ;-)
If anything behaves differently, it would be great if you fixed that first,
before replacing the scaler.
>> Think about common usage. Typically, you
>> know how much of the source you want to crop (e.g. black borders), and you
>> know what final size you want.
> Yes, this makes sense. So, I do not understand why cropping changes the
> output size...
I'm not sure I understand what you mean. Cropping should obviously change the
size; that's what it's all about, no?
mru at inprovide.com
More information about the ffmpeg-devel