[MEncoder-users] No scaling, only crop: Still need x16 dimensions?

[Sebastian]

Rich Felker schrieb:
> On Sun, May 22, 2005 at 10:25:02PM +0200, Sebastian wrote:
> 
>>Hi all,
>>
>>up till now I cropped and then scaled every movie. Scaling was done like
>>640:272, so both x and y are multiples of 16. Now I don't want to scale
>>but only crop, so that the hardware does the scaling during playback,
>>but the optimal cropping dimension is like 702:386, so x and y are no
>>longer multiples of 16. Is this ok or should I overcrop to 688:384?
> 
> 
> In general, overcrop. However, cropping 14 extra pixels is a big loss.
> Personally I would rescale from 702 to 704 on the horizontal. By the
> way, both your crop offsets (x and y) must be even numbers, so make
> sure this holds too.
> 
> In the longer term, I'm planning to make a filter that can clean up a
> little bit of crap near the image borders, to handle cases like this
> where you don't want to crop a whole 16 pixels but need to get rid of
> one or two bad pixels.. But it won't be done very soon..
> 
> Rich
> 
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> 
Thanks Rich!

Cheers

Sebastian