[FFmpeg-devel] [PATCH] Change default behaviour of scale filter from 'progressive' to 'auto'

Carl Eugen Hoyos cehoyos at ag.or.at
Sat Mar 31 02:40:02 CEST 2012

Reimar Döffinger <Reimar.Doeffinger <at> gmx.de> writes:

> Which of course is generally related to any kind of 
> "interlaced content" flag being really, really unreliable.

Which is why I am slightly against this patch:
Afaict, on DVB-T (SD), all material is signalled as being 
interlaced, although all movies and series are progressive 
(because 24Hz stretched and "interlaced" to 50Hz does not 
produce visible fields).
I suspect who works with interlaced material knows it 
and can set the scaling correctly.

Unrelated: Is a filter possible that detects by 
inspection if frames are interlaced?

Carl Eugen

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