[FFmpeg-devel] [PATCH] avfilter: add framerate video filter
Carl Eugen Hoyos
cehoyos at ag.or.at
Sat Aug 29 18:32:23 CEST 2015
Marton Balint <cus <at> passwd.hu> writes:
> Consider you have a 25i source, and you want 30i (60p for display)
> Are you referring to this filter chain for deinterleaving?
> -vf il=l=d:c=d,framerate=30,il=l=i:c=i,yadif=1
> And this for deinterlacing?
> -vf yadif=1,framerate=60,interlace,yadif=1
The original task afaiu was not to provide a progressive
output stream (in that case, deinterlacing first is of
course correct) but to provide an interlaced stream.
(I don't care about the reason.)
I thought - and it seems that Robert agrees now - that
apart from being faster, deinterleaving has a good
chance of providing better quality.
> The second is much, much better.
Why do you think so?
(Apart from the fact that I don't understand the
filterchain "interlace,yadif": It never makes sense imo.)
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