[MEncoder-users] JPG to AVI solved by me for friends

[Nick Marinho]

 Anyone here would can explain me this line.

 I want to know what are all settings in this line, one to one.

 vcodec=mpeg4:mbd=2:mv0:trell
:v4mv:cbp:last_pred=3:predia=2:dia=2:vb_strategy=1:precmp=2:cmp=2:subcmp=2:preme=2:vme=5:naq:qns=2

 Thanks


2007/6/9, DaveG <mplayer01 at dgmm.net>:
>
> On Saturday 09 June 2007, Nick Marinho wrote:
> >  If you want to make a avi file from jpg files that you have in a
> > directory, this is the code to do.
> >
> > mencoder 'mf://*.jpg' -mf w=352:h=240:fps=2:type=jpeg -o output.avi -of
> avi
> > \
> > -oac copy \
> > -ovc xvid \
> > -xvidencopts bitrate=800 -vf
> > scale=352:240,harddup,lavcdeint,scale,expand=:-42:::1 -zoom -xy 352
> -ofps 2
> >
> >  Was the only form that i could make this.
> >
> >  If anyone have a script like this please share.
>
> I put together a little script a while back to capture images from a
> webcam at
> 30 second intervals and create an avi from the files.  Cron runs it at a
> specified time and the script stops itself at a pre-determined time.  As
> each
> raw image is captured it's named by time, timestamped on the image with
> the
> date/time by ImageMagik and the raw source frame deleted.
>
> Once the timed grab sequence is ended, mplayer creates a video from the
> jpg
> images.
>
> If/when I get time, it'd be nice to compare the images and only save it if
> it's different from the previous image, ie do a crude motion detection and
> bin the image where nothing is happening. (And find a better camera which
> allows better quality image grabs too!)
>
> #!/bin/sh
> ####################################################################
> #  grabpic v0.1 - 03/06/06                                         #
> #                                                                  #
> #  Started by cron at specified time and grabs images continuously #
> #  (subject to "sleep" delay) until the hour returned by date      #
> #   equals ${stoptime} then create XViD avi movie file from frames #
> ####################################################################
> # Set up variables
> fpath=/home/dave/temp/
> stoptime=23
> # Main Loop
> while [ "`date "+%H"`" != ${stoptime} ] ; do
> # set base filename to date/time
>   fname=`date "+%y%m%d%H%M%S"`
> # Grab raw "preview" from from webcam
>   /usr/local/bin/gphoto2  --quiet \
>                           --filename `echo ${fpath}${fname}` \
>                           --capture-preview
> # Use ImageMagick to timestamp the frame and convert to jpg
>    line="/usr/local/bin/convert
>         -font helvetica -fill white -pointsize 20
>         -stroke black -strokewidth 3
>         -draw 'text 190,230 \"${fname}\"'
>         -stroke none -draw 'text 190,230 \"${fname}\"'
>         -quality 100
>         ${fpath}${fname} ${fpath}${fname}.jpg"
>   eval $line
> #delete the raw frame
>   rm ${fpath}${fname}
>   sleep 27
> done
> # Encode JPeG sequence to XViD avi video (2 pass high quality) saving
> # the file as mmdd.avi
> cd ${fpath}
> audio="-oac copy"
>
> #all one line
> video="-ovc lavc -lavcopts
>
> vcodec=mpeg4:mbd=2:mv0:trell:v4mv:cbp:last_pred=3:predia=2:dia=2:vb_strategy=1:precmp=2:cmp=2:subcmp=2:preme=2:vme=5:naq:qns=2"
>
> bitrate="vbitrate=500"
> for pass in "turbo:vpass=1 -nosound" "vpass=2 ${audio}"; do
>   /usr/local/bin/mencoder "mf://*.jpg" -mf fps=25:type=jpg \
>            ${video}:${bitrate}:${pass} ${audio} \
>            -o ${fpath}`date "+%y%m%d"`.avi
> done
> # clean up
> find ${fpath} -name "*.jpg" -delete
> rm ${fpath}*.log
>
>
> --
> Dave
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>



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