[MEncoder-users] How much filtering before low-bitrate H.264

[Reimar Döffinger]

On Mon, Mar 17, 2008 at 02:23:36AM -0300, Jorge Peixoto de Morais Neto wrote:
> If A is true, then should I use nr, hqdn3d, pp=ac or what?
> Maybe both pp=ac and hqdn3d?

In theory, nr would be most efficient, since the encoder can decide to
throw away exactly that noise which is hardest to encode.
In practice, you will just have to test as you have already done, though
a visual comparison is more important than PSNR, noise filtering can in
some cases decrease PSNR sharply with basically no visual difference
(esp. if you add a noise filter on playback).

Greetings,
Reimar Döffinger