[FFmpeg-devel] [RFC] avfilter/yadif: Check more fields for the spatial/temporal decission

Sal Kennedy mugfunky at gmail.com
Fri Sep 20 05:44:59 CEST 2013

tried it.  love it.

did a side-by-side on the old yadif, sharper in static textures, moire is
eliminated on grilles and tweed jackets... these are things that were
dealbreakers in our QC pipeline, so i'm quite happy.  this should be

On Fri, Sep 20, 2013 at 12:13 PM, Sal Kennedy <mugfunky at gmail.com> wrote:

> >so noone cares about deinterlacing ?
> i'm just about to attempt to apply this and try it out.  i'm a bit noob
> with anything but "git pull make install", but i'm very much interested in
> this change.
> i definitely care about deinterlacing - even though most people would
> rather it never existed, i have to deal with it all the time (i'm thinking
> specifically of HD->SD downrezzing here) and interlace must be dealt with.
> more motion-checking is essential for HD downrezzing as the detail (esp on
> motion graphics) is just so much higher than SD world, and current yadif
> gets thrown off a little.
> i'll post back with my thoughts, but so long as there's no extra false
> negatives with this approach, i think it'll be a great change.
> On Fri, Sep 20, 2013 at 8:21 AM, compn <tempn at twmi.rr.com> wrote:
>> On Thu, 19 Sep 2013 23:43:51 +0200, Michael Niedermayer wrote:
>> >On Thu, Sep 05, 2013 at 09:01:05PM +0200, Michael Niedermayer wrote:
>> >> Hi
>> >>
>> >> this patch uses 2 additional fields to check if things are unchanging
>> before
>> >> applying temporal deinterlacing, This reduces artifacts in the sample
>> i tested
>> >>
>> >> The X86 code is not updated yet because i first like to get some
>> feedback on
>> >> this
>> >> That is does it look better ? worse ? do people consider an extra
>> frame delay
>> >> a problem? Also if you want to test this, please make sure you do
>> proper
>> >> blind tests so you dont know which is which before you decide which
>> looks
>> >> better
>> >
>> >so noone cares about deinterlacing ?
>> >
>> >its a simple question, Does A look better than B, does B look better
>> >than A does they look equally good/bad ?
>> post it on doom9 , they love filters and deinterlacing over there.
>> this is a user question, and you're on the dev list. :)
>> a lot of people are very interested in (and use) your yadif filter.
>> they just all dont follow ffmpeg-devel.
>> maybe post it on your blog too! or the news page!
>> you know how many subscribers are on this list vs how many hits the
>> news page gets.
>> -compn
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