[MEncoder-users] yadif: what does "spatial interlacing check" mean?

[Peter]

Christian Ebert wrote:
> Hi,
> 
> TFM say about the 2 and 3 options for yadif that they "skip
> spatial interlacing check". What does this mean exactly? What's
> the better way to go if I want better quality regardless of
> encoding time? And would recommendations differ if I use yadif in
> connection with mcdeint?
> 

I'm sorry you didn't get an answer to this, because I need it too. I normally 
see, when I google for this stuff, that YADIF=3 is chosen. I THINK that is 
because whatever the 'spatial interlacing check' that YADIF=1 would do, would 
create interpolated data that mcdeint would then overwrite, wasting effort... 
but I'm only guessing!

Would it be correct to say that

YADIF=3 would give the fastest/worst result
YADIF=1 would give a slower/better result
YADIF=3,MCDEINT would give an evenslower/evenbetter result

and that it would not be sane to use YADIF=1 with MCdeint?

Is it also true that if you choose a 'bob' type of mode for YADIF, that outputs 
a frame for each field, that 'framestep=2' will get things working properly by 
telling mencoder that the frame rate is now double what it thought based on the 
input fps?



-- 
Peter

____________________________________________________________
Publish your photos in seconds for FREE
TRY IM TOOLPACK at http://www.imtoolpack.com/default.aspx?rc=if4