[MEncoder-users] qp_constant does not work?

Guillaume POIRIER poirierg at gmail.com
Thu Feb 23 13:20:46 CET 2006


On 2/23/06, Kris.Struyve at alcatel.be <Kris.Struyve at alcatel.be> wrote:
> Hello,
> I am trying to encode video into x264 with constant QP.
> However, when using the qp_constant option as below I see in the log fil
> that the QP varies from one frame to another. Do you happen to know why?
> Is this a bug?

I guess QP varies from one frame type from the other. P frames should
have a higher QP, and an B even lower QP.

> mencoder dvd://7 -o test.264 -ovc x264 -x264encopts qp_constant=26:log=3
> Furthremore the encoder option -idrint is not recognised?

not like that, you must specify it along with other x264encopts options:


Reinventing the wheel certainly is annoying, but as long as all other
wheels are square...

Reimar Döffinger

More information about the MEncoder-users mailing list