[MPlayer-users] segfault while trying to telecine

[mplayer at interlinx.bc.ca]

Well, some experimentation later, I have discovered that whatever is
causing this segfault, it's the same one as Richard mentions in this
message:

http://mplayerhq.hu/pipermail/mplayer-users/2003-February/030435.html

Adding the scale filter to the filter chain when using telecine seems
to correct (or rather, work around) that segfault.

So now on to the results I got.  I am trying to telecine this file:

http://a772.g.akamai.net/5/772/51/54ac95559cce9a/1a1a1aaa2198c627970773d80669d84574a8d80d3cb12453c02589f25382f668c9329e0375e8177ae955ca3799026392f361c82d9ffe6bcc3a9b0267d439a71b/anger_management-tlr_480.mov

The resulting file only seemed to have the left half of the picture
telecined.  The right half remained progressive.

When I tried -ofps 29.97 on the mencoder command line, I got a 29.97
fps file, but it had 6 frames out of 4, not 5.  The first 3
progressive frames, then two interlaced frames, then 1 more
progressive frame (not sure which one it was, but I can figure that
out if necessary) then back to the 3 progressive followed by 2
interlaced, and so on.

I suspected that the extra frame is a duplication because mencoder
detected that I requested an output fps that was 20% higher than the
input fps, but didn't account for the extrac frame that vf_telecine
was creating.

So I tried no -ofps command on the mencoder command line and I did get
5 telecined frames out of 4, but the fps in the file was 23.97 and the
a/v sync was out, not surprisingly.

Incidentally, I tried to simply play (with mplayer of course) the .mov
(24fps) file with -fps 29.97, hoping it would just duplicate 1 out of
4 frames and keep a/v sync, but there was no success in that.  A/v
drifted within seconds of the clip starting.

Thots?

b.

-- 
Brian J. Murrell
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