Re: [MPlayer-users] Encoding "dark" movies

[D Richard Felker III <dalias@xxxxxxxxxx>]

On Sat, Dec 07, 2002 at 11:31:40AM +0100, Stephan André Schmidt wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hello,
> 
> when encoding "dark" movies like "Panic Room" or "From Hell", the assumed 
> bitrate to end up in a divx about 1400 MB, i.e. about 1390 for "From 
> Hell", does end in an avi of around only 900 MB (3-pass encoding). Giving 
> the bitrate of about 1200 to mencoder does not make any difference to the 
> file size of the avi; it is also around 900 MB. Are there any special 
> filters or options to libavcodec handling this kind of "dark" movies, so 
> that the "calculated" avi size will be reached after encoding?
> 
> The command line for mencoder has been:
> 
> (have encoded the audio first), then -->
> 
> nice -+19 mencoder -dvd 1 -dvd-device $DVD_DEV -oac copy -o /dev/null -ovc 
> lavc -lavcopts vcodec=mpeg4:vbitrate=1386:vhq:vpass=1:vqmin=2:vqmax=31 
> -vop scale=640:352,crop=720:434:0:74
> 
> wait
> 
> nice -+19 mencoder -dvd 1 -dvd-device $DVD_DEV -oac copy -o from_hell.avi 
> -ovc lavc -lavcopts 
> vcodec=mpeg4:vbitrate=1386:vhq:vpass=2:vqmin=2:vqmax=31 -vop 
> scale=640:352,crop=720:434:0:74
> 
> Thanks for hints,

Hmm, isn't the whole idea of a two-cd dvd rip that you want to keep
the video bitrate reasonable and use -oac copy to get 5.1 ac3 audio??
Using insanely high bitrates like 1200+ will not generally improve
quality (unless you're using a crappy encoder like divx3/4, or HUGE
resolution).

Rich