> Subject: [FFmpeg-user] Shift videoframe for 1 pixel in vertical to change
> field order
> Hello,
>
> how can I shift a videoframe 1 pixel up or down (to change the field order)?
>
> Best Regards
>
> Christoph
From the manual
-----------------------------------------------------------------------------------------------
10.53 fieldorder
Transform the field order of the input video.
It accepts the following parameters:
order
The output field order.
Valid values are tff for top field first or bff for bottom field first.
The default value is ‘tff’.
The transformation is done by shifting the picture content up or down by one
line,
and filling the remaining line with appropriate picture content.
This method is consistent with most broadcast field order converters.
If the input video is not flagged as being interlaced, or it is already
flagged as being of the required output field order, then this filter does not
alter the incoming video.
It is very useful when converting to or from PAL DV material, which is bottom
field first.
For example:
ffmpeg -i in.vob -vf "fieldorder=bff" out.dv
Rens
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