[MEncoder-users] Weird DVD with shifting framerates
lists at eastcheap.org
Thu Jun 13 17:24:01 CEST 2013
On Wed, 12 Jun 2013, Carl Eugen Hoyos wrote:
> R.L. Horn <lists <at> eastcheap.org> writes:
>> ...does ffmpeg have a telecine-aware deinterlacer?
> I am not sure if I understand the question:
A lot of NTSC DVD streams go back and forth between soft telecine and "60"
field/sec interlaced. Sometimes, the best way to deal with it (e.g. for
short interlaced bursts from sloppy editing) is to constrain the whole
thing to 24000/1001 fps, discarding frames when necessary, and smoothing
over the interlaced frames, while leaving progressive frames untouched.
> The inverse telecine filter is able to call a deinterlacer for frames
> that could not be inverse-telecined,
If it's smart enough to leave existing progressive content alone, then,
yeah, that would be what I was describing. My (possibly faulty)
recollection is that mencoder would detect soft pulldown early on and
blindly feed a mix of progressive and interlaced content into the filter
chain, which made dealing with NTSC weirdness problematic. I don't know
if that's the case with ffmpeg.
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