[FFmpeg-user] Converting from HD (720p) to SD (576i)

[Carl Eugen Hoyos]

Iban Garcia <ibantxo28 <at> gmail.com> writes:

> The process complains two main "to do"s:
> 1) RESIZE (from 1080x720 to 720x576)
> 2) INTERLACE: Creating an interlace content from a 
> progressive content (but with double frame rate [?])

(This should be "half frame rate" in my understanding, 
and that is what you use below.

> 
> The command I have used is the next one:
> 
> *ffmpeg -i original_video.mxf -threads 8  -pix_fmt -pix_fmt yuv411p 
> -aspect 16:9 -vf "scale=720:576,tinterlace=interleave_bottom,
> fieldorder=bff" -ac 2 -y -r 25 output_file.dv*

(Isn't there a copy-paste error in the first line?)

I may be wrong (and I did not test), but it may make 
a difference at what time the colour space conversion 
happens.
(This should be visible with some -loglevel, it may 
have been a bad idea that the filter system stopped 
to be verbose about what exact filters are used.)

Perhaps try filter "format=yuv411p" instead of -pix_fmt?

Carl Eugen