[FFmpeg-devel] [PATCH] [PATCH] lavfi: add inverse telecine filter

[Carl Eugen Hoyos]

Timothy Gu <timothygu99 <at> gmail.com> writes:

> > This is an exact inverse of the telecine filter 
> > unlike previously existing pullup and fieldmatch 
> > ones.
> 
> What's the difference between the three seemingly 
> similar filters?

The other two are similar (speed and license are 
different): They try to detect the telecined 
frames and reconstruct the original progressive 
stream even if cuts were made. They sometimes miss 
telecined frames.
This filter does not detect anything, it applies a 
fixed pattern to the input stream: It fails very 
badly if the input was cut (and the pattern 
changed), it works perfectly for streams that 
contain a constant pattern.

Carl Eugen