[FFmpeg-user] DOWN CONVERSION ISSUE: From MXF (1080i AVC Intra) - MBAFF "interlacing" to DVCPRO

[Iban Garcia]

Umm... it does not work for me. The output.dv is still "progressive"
(de-interlaced): both fields of output.dv file are equal. The interlacing
has been lost...

I have download and installed "ffmbc". I am doing some test now with it.
But, by the moment, all of the tests has the same "de-interlaced" output...
:-(((


2012/3/26 Tim Nicholson <nichot20 at yahoo.com>

> On 25/03/12 15:43, Iban Garcia wrote:
> > Hi,
> >
> > I have taken from git the last version of ffmpeg. And I have made next
> > test. The output.dv fields are not interlaced. The interlaced information
> > has been lost in the process.
> >
> > # ffmpeg -y -threads 8 -i input.mxf -s 720x576 -pix_fmt yuv411p -aspect
> > 16:9 -an -r 25 -vf "setfield=1, fieldorder=bff" output.dv
>
> > [..]
>
> > sws_param:
> > [fieldorder @ 0x646e80] output field order: bff
> > [scale @ 0x6283a0] w:1920 h:1080 fmt:yuv422p10le sar:1/1 -> w:720 h:576
> > fmt:yuv411p sar:64/45 flags:0x4
> >
>
> As your source is HD and you wish to output SD, you should really scale the
> material properly using the "scale" filter with interlacing turned on.
>
> Something like:-
>
> ffmpeg -y -threads 8 -i input.mxf \
> -vf "setfield=1, scale=720:576:1, fieldorder=bff" \
> -pix_fmt yuv411p -aspect 16:9 -an -r 25 output.dv
>
> --
> Tim
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