[MPlayer-users] Re: tmpgenc is better!?!?!?

[Nico]

your bitrate is so high because you use so low vqmax.

As far as I can tell (after much encodings) if you use
vhq:vqmax=8:keyint=12:vcodec=mpeg1video
for both passes and don't rescale you have an almost perfect copy of the 
first, (I assume that since you are comparing mencoder with tmpg you 
want to make mpeg1 videos).
The price is high bitrate: roughly 1500 kb/s.

Hope it helps.

		Nico

Wendy Tromp wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> 
> 
>>--------------------------------------------------------------------
>>vbitrate=1200
>>sharpness=20
>>vqmin=2
>>vqmax=4
>>vbitrate=820
>>denoise="10:8:8"
>>
>>cropw=688
>>croph=534
>>scalew=688
>>scaleh=400
>>
>>mp3bitrate=128
>>mp3accel=0
>>
>>lavcopts="vcodec=mpeg4:vbitrate=${vbitrate}:vhq:v4mv:vmax_b_frames=2"
>>lavcopts="$lavcopts:vb_strategy=1:vqmin=${vqmin}:vqmax=${vqmax}"
>>lavcopts="$lavcopts:vlelim=-4:vcelim=3:lumi_mask=0.05:dark_mask=0.1"
>>lavcopts="$lavcopts:scplx_mask=0.02:tcplx_mask=0.05:naq:qpel"
>>
>>filters="hqdn3d=${denoise}"
>>filters="$filters,scale=${scalew}:${scaleh}:0:${sharpness}"
>>filters="$filters,crop=${cropw}:${croph}"
>>
>>lameopts="cbr:br=${mp3bitrate}:aq=${mp3accel}"
>>
>>mencoder -ovc lavc -oac mp3lame \
>>    -lameopts "$lameopts" -lavcopts "$lavcopts" \
>>    -vop $filters -sws 7 -o $outputfile $inputfile
>>--------------------------------------------------------------------
>>
>>If you still have problems with quality, switch b-frames off, make
>>vlelim and vcelim closer to zero.  Did you have a look at
>>DOCS/tech/encoding-tips.txt?
>>
> 
> 
> yes I read that, and for as far as I can see it is only about the options
> under Encoding.
> The parameters above arereally helpful, and with these I can encode a minute
> in around 18 mb. I'd like to see it a bit smaller because my videos are 1
> hour and i want to fit one hour of video on one cd. I played with scalew and
> scaleh and that affects the size, but it seems to me that vbitrate has no
> onfluence at all.
> If i am correct, during encoding you can see the bitrate for video and
> sound, and for the sound it is 128 all the time but the bitrate for the
> video is around 4000, even though it is specified at 820 above. Why is that?
> I tried to change it to a very low value (20) and it had no influence
> whatsoever......
> Are there other parameters that I can vary to change the size of the encoded
> video?
> 
> Wendy Tromp
> 
>>David Kühling
>>--
>>GnuPG public key: http://user.cs.tu-berlin.de/~dvdkhlng/dk.gpg
>>Fingerprint: B17A DC95 D293 657B 4205  D016 7DEF 5323 C174 7D40
>>
>>_______________________________________________
>>RTFM!!!  http://www.MPlayerHQ.hu/DOCS
>>Search:  http://www.MPlayerHQ.hu/cgi-bin/htsearch
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>>
> 
> 
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