[FFmpeg-user] Best way to scale interlaced video

Massimo Battistel battistel at gmail.com
Wed Feb 26 17:33:38 CET 2014

> Please test the following, if it works you can
> try to remove some of the flags, I think some
> should be unnecessary:
> $ ffmpeg -i sample1080i.mp4 -vcodec rawvideo
> -sws_flags lanczos+accurate_rnd+full_chroma_int+full_chroma_inp
> -vf scale=w=720:h=432:interl=1 -an out_interl.avi

No luck. Result is the same.

> Just to make sure:
> This has nothing to do with your original request
> (scaling interlaced video) and it should never be
> used (except to test negative effects of a
> deinterlacer).
I used the deinterlacer (solution #2) because scale with interl=1 (solution
#1) gave me some issues. I would not completely exclude this approach by
now because for still images image quality (you can see it with your eyes
if you run the scripts I provided) is better.

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