[FFmpeg-user] Order for Filters
nickrobbins at yahoo.com
Thu Apr 14 16:23:12 CEST 2016
> On Thursday, April 14, 2016 9:22 AM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> > Nicholas Robbins <nickrobbins-at-yahoo.com <at> ffmpeg.org> writes:
>> I have some MKV's from a DVD that are telecined and
>> letterboxed. I would normally use
>> "-vf fieldmatch,decimate"
>> however, I want to add a crop filter. Which order would be
>> better? Crop before fieldmatch or fieldmatch before crop?
> While it generally doesn't matter and it would speed up the
> process to first crop, I wanted to suggest to do the cropping
> later so fieldmatch has more data to decide if a frame is
> But if the input is letterboxed, you should definitely crop
The input definitely appears to be letterboxed. Is there some difference between "appearing" to be letterboxed and actually being letterboxed that I should check for?
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