[FFmpeg-devel] [PATCH] lavfi/mp: remove some pp filters.

Loren Merritt lorenm at u.washington.edu
Fri Jun 14 06:20:58 CEST 2013

On Fri, 14 Jun 2013, Clément Bsch wrote:

>  - fspp seems to be a 1d version of spp; users seem to prefer spp
>    (denouncement: michaelni, iive, microchip).

Anyone know why fspp is worse? I thought its point was to exploit
separability of 2d dct to get the same output as spp in slightly more than
half the time. If that's what it's trying to do, then any quality
difference is just a bug, not a tradeoff.
And if I misunderstood fspp, then someone should implement that
optimization, because it's definitely possible. Or rather, I have
implemented an spp with that optimization, but mine is part of a
jpeg decoder, not a libavfilter.

--Loren Merritt

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