[MEncoder-users] Noise reduction and interlacing: (hq)denoise3d vs. nr

[Nico Sabbi]

Pierre Catello wrote:

> Hi Levente,


please, don't top post

>
> I'm not an expert but I think that denoise3d hqdn3d are likely
> dangerous for interlaced content as they work both temporally and
> spatially. The spatial filter will be harmful unless you separate the
> fields before applying the filter and then weave them to
> reinterlace... Something like :
>
> -vf tfield=0,hqdn3d,tinterlace
>  
>

bad idea, better use -vf il=d,hqdn3d,il=i

> or slower but better: -vf yadif=1,mcdeint,hqdn3d,tinterlace
>  
>

a simple -vf yadif=1,softskip produces very good results (for me)