[FFmpeg-user] How to set interlaced encoding for interlcaed DNxHD formats (220x/185x/220/145/120)?

[Andy Furniss]

Christoph Gerstbauer wrote:
> Hello,
>
> I have the problem that I cannot set interlaced as encoding format for
> DNxHD 220x/185x/220/145/120
> I think I use the wrong syntax for setting the field order:
>
> -vf "setfield=1"
> or
> -top 1
>
> both are not working.

May not be any help with dnxhd but I made some x264 recently and had to 
"say" twice like -

-i infile -vf setfield=tff .... -x264-params "...:tff=1:..." ...