[MPlayer-users] mencoder extremely slow creating mpegs

[belcampo]

Tony Smolar wrote:
> Greetings,
> 
> I have used mencoder for a long time to create DVD-compatible mpegs.   I 
> had been using 1.0pre7try2 and was getting over 70-100fps while encoding.
> 
> Then I upgraded to a more recent Linux distribution, and 1.0pre7try2 no 
> longer worked.   I built 1.0rc2 and the most recent version from svn (as 
> of 2 days ago)
> 
> Now, I get a really slow 6 or 7fps while encoding with both of those 
> versions, it takes forever to encode anything.
> 
> I'm not able to compile 1.0pre7try2,  but I was able to compile 
> 1.0pre8,   that version does encode fast again.  1.0rc1 seems to be the 
> first version to have this problem for me.
> 
> I've tried searching the lists,  but I haven't been able to find anyone 
> having the same problem.
> 
> The command line I'm using looks something like this: (the input is an 
> mpg because it's from a Tivo, and I'm converting it to a dvd-friendly 
> format)
> 
> /opt2/mplayer-1.0pre8/bin/mencoder somevid.mpg -of mpeg -oac lavc -ovc 
> lavc -lavcopts 
> acodec=ac3:vcodec=mpeg2video:vrc_buf_size=1835:vbitrate=2500:keyint=18:aspect=4/3:vpass=1:threads=2 
> -mpegopts format=dvd -vf lavcdeint,scale=704:480,harddup -af volume=+5dB 
> -mc 0 -srate 48000 -ofps 30000/1001 -o /dev/null
notation has changed, vbitrate used to be in kb, not anymore, so 
changing vrc_buf_size=1835 to vrc_buf_size=1835000 and
vbitrate=2500 to vbitrate=2500000
will probably solve your problem.
You did get a lot of this messages

rc buffer underflow

didn't you
> 
> If anyone has any ideas or things for me to try to get more 
> information,  let me know.   My processor is an AMD X2 3800+,  and I am 
> running Fedora.
> 
> Thanks,
> Tony Smolar
> 
> 
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