[MPlayer-DOCS] r21861 - trunk/DOCS/xml/en/encoding-guide.xml

Guillaume Poirier gpoirier at mplayerhq.hu
Thu Jan 11 09:13:18 CET 2007


Hi,

Andrew Savchenko wrote:
> On 10 Jan 2007 03:08 gpoirier wrote:
> 
>>To shave off +  some encoding time, you can specify the
>><option>turbo</option> option +  on the first pass;
> 
> 
> But below:
> 
> 
>>+  The second pass is the same, except that you specify the
>>output file +  and set <option>pass=2</option>.
>>+
>>+  <screen>mencoder dvd://1 <emphasis role="bold">-o
>>narnia.avi</emphasis> -ss 32 -ovc x264 \ +-x264encopts <emphasis
>>role="bold">pass=2</emphasis>:turbo:bitrate=900:frameref=5:bfram
>>es=1:\
>>+me=umh:4x4mv:trellis=1:qp_step=4:qcomp=0.7:direct_pred=3:keyint
>>=300 \ +-vf crop=720:352:0:62,scale=-10:-1,harddup \
>>+-oac faac -faacopts br=192:mpeg=4:object=1 -channels 2 -srate
>>48000 \ +-ofps 24000/1001</screen>
> 
> 
> So,
> 1) It is not the same: 
> 2) "turbo" option should be removed from the second pass. 
> Perhaps a typo.

This should be fixed, yes.

In fact, this typo isn't too bad because "turbo" kicks in only when
pass=1 is specified. With other values of pass, turbo is just ignored.

Guillaume



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