[MEncoder-users] encoding multimedia files to dvd video

[Nico Sabbi]

Dave wrote:

>Hello,
>    I hope this is the right place to ask this if not please redirect me 
>appropriately. I've got some multimedia files, some .avi, some .wmv, some 
>.mpg files that i'd like to encode in to ntsc-compliant dvd video so i can 
>play them on my standard dvd player. These video files are in a variety of 
>formats, pal mostly so i'm going to need to convert them, and ideally during 
>the conversion i'd like to take the audio from stereo to 5.1 surround sound. 
>I'm running FreeBSD 6.2 and i have installed from ports mplayer version 
>0.99.10_13, mencoder version 0.99.10, and ffmpeg ffmpeg-2007.07.12_3, in 
>addition to their dependencies. I've also got dvdauthor because i want to 
>make menus on this dvd so i can select what item to watch, but that's for 
>another list.
>    I've had success though not made totally dvd compliant videos with the 
>following shell script wrappers:
>
>makedvd original:
>#!/bin/sh
>mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd \
>-vf scale=720:480,harddup -srate 48000 -af lavcresample=48000 -lavcopts \
>vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=9800:keyint=15:aspect=4/3 
> -ofps 25 -o Today1.mpg Today.avi
>
>This one did not give me the surround sound, nor totally dvd compliant 
>video, i wanted aspect 4:3 for full screen and 30000/1001 or 24 can't 
>remember the other numbers for frame rate, so i dug a little more, reworked 
>it and came up with this script:
>
>makedvd new:
>#!/bin/sh
>mencoder -channels 6 -oac lavc -lavcopts acodec=ac3:abitrate=384 \
>-ovc lavc -of mpeg -mpegopts format=dvd:tsaf:telecine -ofps 24000/1001 \
>-vf scale=720:480,harddup -srate 48000 -af lavcresample=48000 -lavcopts 
>aspect=4/3 \
>vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=9800:keyint=15:vstrict=0:acodec=ac3 
> -ofps 25 -o Today1.mpg Today.avi
>
>this one still isn't right.
>  
>
ntsc dvds should have keyint=18 (that anyway is quite irrelevant);
what's totally wrong is the aspect ratio: you are rescaling the frame to 
720:480
without keeping into account the A/R of the original movie. Read the man 
page
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