[MEncoder-users] Encoding a 4:3 XviD video

[James Hastings-Trew]

the bcpino wrote:
> Hello!
>
> My old personal videos were transfered to DVD a couple of years ago,
> all of them have 4:3 aspect ratio.
>
> 1. When I do:
>
> mplayer dvd://1 -nosound -vo null -benchmark
>
> I get this line: demux_mpg: 24000/1001 fps progressive NTSC content
> detected, switching framerate.
>
> Which means that all the video is progressive.
>
> Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> VO: [xv] 720x480 => 720x540 Planar YV12
>
> Which means that the video was originally encoded to a 720x480
> resolution with a 4:3 aspect ratio.
>
> 2. I use the following commands to make a 2-pass XviD video:
>
> mencoder dvd://1 -dvd-device /dev/dvd -oac mp3lame -lameopts abr:br=128  \
> -ovc xvid -xvidencopts
> bitrate=1100:chroma_opt:vhq=4:bvhq=1:quant_type=mpeg:pass=1 \
> -o "/dev/null" -ofps 24000/1001
>
> mencoder dvd://1 -dvd-device /dev/dvd -oac mp3lame -lameopts abr:br=128  \
> -ovc xvid -xvidencopts
> bitrate=1100:chroma_opt:vhq=4:bvhq=1:quant_type=mpeg:pass=2 \
> -o "wedding.avi" -ofps 24000/1001
>
> The video under MPlayer (Linux) looks fine. However, under Totem Movie
> Player (Linux) or Windows Media Player (Vista), the video looks
> stretch with another ratio.
>
> I added an option: -aspect 4/3, the encoding took longer, but the
> result was the same.
>
> How can I keep the 4:3 aspect ratio?
>
>   
-vf scale:720:540

Also, unless it was filmed progressive and converted to video 
professionally, chances are it is actually interlaced. Just a guess.