[MEncoder-users] yadif: what does "spatial interlacing check" mean?
pscientist at inbox.com
Tue Jun 29 07:10:43 CEST 2010
Christian Ebert wrote:
> 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
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