[FFmpeg-devel] [PATCH] added reitnerlace filter

Nicolas George george at nsup.org
Thu Dec 28 15:41:29 EET 2017

Vasile Toncu (2017-12-28):
> There are some features that tinterlace has and reinterlace does not.
> Tinterlace has some more flags, reinterlace has only simple low pass filter.
> Also, in a newer version, tinterlace does support input formats on 16 bit.
> Expecting these two, there are no other special features.

Thanks for that. I suspect that tinterlace is also faster. I suggest you
run some benchmarks.

> Can one simply change the tinterlace from GPL to LGPL?

Of course not. There are two non-simple courses of action to achieve it:

- Get the approval of all copyright holders. It has been done in the
  past for other filters.

- Remove the GPL tinterlace and at the same time add a new LGPL filter
  that does the same thing and is also called tinterlace.

The second is probably only acceptable if the new filter has all the
features and performance of the old one.


  Nicolas George
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