[MEncoder-users] VHS capturing 2 avi

[M Daniel R M]

Hi again 

RC, many thanks for your corrections, I discovered later that you hit on
the target; They oblied me to review the mencoder DOCS (html) and the
man page again..., since I didn't know really what you all were talking
about; Actually, there are lots of things that can easily go unnoticed
at a first (or second...) reading. 
After all yours mail responses, I realized that I'd need to have a look
deeper to the DOC available in /usr/share/... I did it. It took me a
considerable amount of time. Now, I'm here again; And again..., please,
help.

El jue, 15-12-2005 a las 16:39 -0800, RC escribió:
> On Thu, 15 Dec 2005 21:43:46 +0100
> M Daniel R M <4.mdr.magarzo at gmail.com> wrote:
> 
> > -lavcopts vcodec=mpeg4:vhq:vbitrate=2800:keyint=45:scplx_mask=0.2 -vf
> 
> vhq has been obsoleted by mbd=2, 

Sorry, you probably mean vhq is = to mbd=1 (accordingly with the man
page)
All in all, what I need would be probably mbd=2, right?


> and you might want to use "trell" also.
>  

Yep. You're right.


> Are you sure you want a keyint value that low?
> 

There were no special reason for that; Just, I was afraid then about
possible a/v sync problems. 
Anyway, I'll choose something like 132 or a bit higher in the future.

> You are generally better off using vqscale instead of vbitrate for
> single-pass encoding.
> 

I think (after DOCS reading) you're right again. Maybe vqscale=3 (good
quality/compression) would be a good try to begin. If file sizes raise
too much, I'd have to try vqscale=4 or higher, according with the
DOC's. 

> > crop=720:540,denoise3d,pp=de,scale=352:288 
> 
> You really need to use a deinterlacer (before cropping).  
> 

What you maybe mean is that it isn't recommended cropping with
interlaced content, is it? 
Otherwise, I do not want to deinterlace, that's not into my intentions,
since I'm watching those stuff in the TV.


> I suggest trying the lavcopts "nr=" option rather than denoise3d filter,
> for both speed (and, IMHO, quality).  Start around "nr=400" and raise it
> a bit if you still get too much noise, and lower it if the video gets
> noticably blocky.
> 

I also take note about that; I think maybe nr=320 would be nice
considering the note of the next post in this thread. 

> Using pp for encoding isn't recomended at all.
> 

I take note again... Do you mean pp would be, _if used_, _after_ get
your desired file, and separately, in a subsequent command order?

> ______

Regards, 

Daniel