[MEncoder-users] decryption speed problem (& apology)

[James Hastings-Trew]

fake name wrote:
> Hi all,
>
> First off, I'd like to apologize for the cross-posting with the mplayer users list.  I realized after I sent it that the mencoders users list is probably the more appropriate place for my question.
>
> I'm having a problem (I believe) with the decryption and/or DVD drive read speed with mencoder.
>
> Is it possible to decrypt and/or transcode faster than real time (i.e. faster than 1x drive speed)?
>
> I
> noticed the problem when trying to transcode directly from DVD to x264
> but have the same problem with a simple dumpfile dumpstream with
> mplayer.
>
> This is definitely an I/O limitation and not a CPU
> limitation.  Other programs (including some that use mencoder) can
> accomplish this much faster than real time.  When using those programs
> my cpu (both cores) are maxed out but with mencoder it is only using ~
> 30%.
>
> I would just use an already existing program, but I'm
> trying to use this as a learning experience for video transcoding,
> mencoder and the x264 codec.
>
> Pertinent info:
>
> core 2 duo @ 2.13GHz, 2 gigs
>  RAM, XP SP 2.
>
> Here is my mencoder command:
>
> "C:\Program
> Files\mencoder\mencoder.exe"  dvd://1 -dvd-device D: -sws 9 -of lavf
> -lavfopts format=ipod -vf scale=480:-2,dsize=480:320:0,harddup -ovc
> x264 -x264encopts
> bitrate=896:vbv_maxrate=896:vbv_bufsize=2000:nocabac:me=umh:subq=6:frameref=6:trellis=1:level_idc=30:global_header:threads=auto
> -oac faac -aid 128 -faacopts mpeg=4:object=2:br=160:raw -channels 2
> -srate 48000 -o "C:\Program Files\mencoder\test.m4v" 
>
> Here is the log:
>   
Try dvd://1 -dvd-device d:\VIDEO_TS

It will go much faster. :)