[MPlayer-users] Need help with deblocking (-vf pp)

[RC]

On Mon, 02 Jan 2006 12:03:07 -0500
"John Brown" <johnbrown105 at hotmail.com> wrote:

>    :vrc_buf_size=1835:keyint=12:trell:mv0:mbd=2:dia=-10:predia=-10:cm
>    p=2 :precmp=2:subcmp=2:cbp:vqmin=1:lmin=1:dc=10:vpass=1:turbo
>    -ofps 30000/1001 -srate 48000 -af lavcresample=48000 -o %2
>    -passlogfile stats.log -quiet >> log.txt 2>>&1

*cmp=2 options tend to make things blocky in my experience.  You can try
*cmp=3 or just leave them all out and try the default.

A larger keyint would help a lot, if you're willing to stretch the
standard a bit.

You generally shouldn't encode with postprocessing.  For deblocking, try
options like scplx_mask=0.2.  Also, denoising (nr/hqdn3d) may help (or
it may make things worse).

> I would like to remove the blocks without using a higher bitrate. 

Wouldn't we all?  

> When I encode at 352x240 with otherwise identical parameters at 1645
> Kbps, then play the result at twice the size, I don't get the
> blocking, even without -vf pp, so I am assuming that I don't need more
> bits. Is that a valid assumption?

Not at all, and I can't imagine how you could possibly reach that
conclusion.