[FFmpeg-devel] [PATCH 1/2] lavfi: remove mp=ilpack filter

[Clément Bœsch]

On Mon, Jan 19, 2015 at 02:06:52PM +0000, Paul B Mahol wrote:
> On 5/4/13, Stefano Sabatini <stefasab at gmail.com> wrote:
> > On date Monday 2013-04-29 10:29:33 +0000, Paul B Mahol encoded:
> >> On 4/29/13, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> >> > Paul B Mahol <onemda <at> gmail.com> writes:
> >> >
> >> >> The filter does not work, asserts here.
> >> >
> >> > Isn't the only thing missing setting the
> >> > correct output pixel format?
> >>
> >> Science when this filter was broken, and nobody complained?
> >>
> >> Also its not needed any more as similar funcionality is already
> >> available in native filter.
> >
> > I'm not an user of the filter, so can't say even what is useful
> > for. Can someone comment on it?
> >
> > Is it possible emulate it with the native filters?
> >
> > From mplayer:
> >
> >   ilpack=mode
> >
> >   When interlaced video is stored in YUV 4:2:0 formats, chroma
> >   interlacing does not line up properly due to vertical downsampling
> >   of the chroma channels.  This filter packs the planar 4:2:0 data
> >   into YUY2 (4:2:2) format with the chroma lines in their proper
> >   locations, so that in any given scanline, the luma and chroma data
> >   both come from the same field.
> >                  <mode>
> >                       Select the sampling mode.
> >                          0: nearest-neighbor sampling, fast but incorrect
> >                          1: linear interpolation (default)
> 
> Filter still asserts here and so I will remove it in next 24 hours.
> 
> scale filter probably can be used instead of ilpack.

13:44:12 <@ubitux> so mmh... -vf format=yuv422p will work as expected?
13:44:27 <+kierank> with forced interlaced scaling yes
13:45:41 <@ubitux> kierank: -vf scale=interl=1,format=yuv422p ?
13:45:52 <+kierank> ubitux: i believe yes

[...]

I didn't test, but apparently ilpack can be dropped.

-- 
Clément B.
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