[MEncoder-users] pullup question

[Gilles Hamel]

Matyas Sustik <mplayer.list <at> sustik.com> writes:

> I used -vf pullup,softskip,harddup -ofps 24000/1001 -fps 30000/1001 on a
> 29.97 fps source that appears to be telecined.  The result is a 23.97 fps
> but stepping through the frames I see the following repeat pattern:
> 1-2 3 4 5-6 7 8 9-10 ...
> That is frames 1 and 2 are the same, 5 and 6 are the same etc.  I expected
> all different progressive frames.

Hello,

I had the same problem. After trying all inverse telecine filters with different
options, only filmdint works in my case. I had to set sad_thres=512 (default is
64) otherwise I saw your pattern, slow scroll motions were jerky and got lots of
messages '@@@@@@@@ Bottom-first field??? @@@@@@@@' during encoding.

It's very tedious to find out the right combination of options and values, many
attempts must be done on typical excerpts. 

I was trying to figure out how these options works, man pages are not very clear.
The howto doesn't help more :  

=======
-vf filmdint is similar to -vf pullup: both filters attempt to match a pair of
fields to form a complete frame. filmdint will deinterlace individual fields
that it cannot match, however, whereas pullup will simply drop them. Also, the
two filters have separate detection code, and filmdint may tend to match fields
a bit less often. Which filter works better may depend on the input video and
personal taste; feel free to experiment with fine-tuning the filters' options if
you encounter problems with either one (see the man page for details). For most
well-mastered input video, however, both filters work quite well, so either one
is a safe choice to start with. 
=======

Please, anybody can explain how to use *_thresh filmdint options.