[MEncoder-users] High quality MPEG4 encoding of interlaced DV source

[Loren Merritt]

On Mon, 27 Nov 2006, Mike Hodson wrote:

>> Both files are about the same size,
>> - as expected, tfields yields to *much* more smoothness in the motion 
>> (kayak
>> gliding and the rider paddling)
>> - yadif *seems* a bit sharper (or with apparent more resolution) than the
>> frames from tfields upscaled to 576 lines. I was surprised by yadif default
>> results, as yadif=3:1,mcdeint=2 wasn't as good (left combing artifacts)
>> 
>> the two versions are here (temporary storage) :
>> http://dl-1.free.fr/52616e646f6d4956ccde8c6063ef06dde6ef5c8284874c2c3bd1fb834eaae4c1/132-xvid-vbr4000-tfields4.avi
>> http://dl-3.free.fr/52616e646f6d49561f2350dc346d040d2ff2d1dd9125f2195db2e1be173b5c06/132-xvid-vbr4000-yadif.avi
>> 
>
> I took a look at these files, compared to your original DV and as a
> very frequent user of the yadif commandline to actually deinterlace
> realtime TV viewing, I can tell you that Pepe left out a crucial
> option to the yadif filter to make it properly give you the framerate
> you desire.
>
> The options to get things looking better:
> -fps 50 -ofps 50 -vf yadif=3

-fps 25 -ofps 50 -vf yadif=3
though the only difference is in A-V sync.

--Loren Merritt