Me & 3M

My Mundane Musings

Media conversion in Linux: Using mencoder/ffmpeg/transcode and other media related scripts

Fedora doesn’t provide any ready to use media player or converted. But installing mplayer and xmms will fill that gap.
Here I will blog some scripts that eased my Any to XVid conversion and other media related stuff


Mencoder/ffmpeg/transcode other media relared scripts
Ref: http://www.mplayerhq.hu/DOCS/HTML/en/mencoder.html

Capturing images from PTP camera (Canon)
Use gnocam, gtkam or digicam
Use gphoto2 –get-all-files

AVI to Mpeg4
mencoder input.avi -ovc lavc -lavcopts vcodec=mpeg4 -o output.mpg4 -oac lavc -af lavcresample=48000:srate=48000

mencoder -ovc lavc -oac lavc -o

mencoder source.mpg -of avi -oac mp3lame -o file.avi -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1400:vhq:vpass=1
mencoder source.mpg -of avi -oac mp3lame -o file.avi -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1400:vhq:vpass=2

mencoder source.mpg -of avi -oac mp3lame -lameopts abr:br=128 -o /dev/null -ovc xvid -xvidencopts vhq=4:pass=1
mencoder source.mpg -of avi -oac mp3lame -lameopts abr:br=128 -o file.avi -ovc xvid -xvidencopts vhq=4:bitrate=1100:pass=2

One pass
mencoder -ovc xvid -oac mp3lame -xvidencopts bitrate=687 -o
mencoder -ovc xvid -oac mp3lame -lameopts abr:br=92 -xvidencopts bitrate=150 -o
mencoder -ovc xvid -oac mp3lame -xvidencopts bitrate=-700000 -o
mencoder -ovc xvid -oac mp3lame -xvidencopts fixed_quant=4 -o

mencoder infile.wmv -ofps 23.976 -ovc lavc -oac copy -o outfile.avi’

Two pass
nice -n 19 mencoder file.wmx -ofps 23.976 -oac mp3lame -lameopts abr:br=92 -ovc xvid -xvidencopts pass=2:bitrate=150 -o audiofix-150bit-xvid.avi

mencoder file.wmx -ofps 23.976 -oac mp3lame -ovc xvid -xvidencopts pass=1 -o /dev/null
mencoder file.wmx -ofps 23.976 -oac mp3lame -ovc xvid -xvidencopts pass=2:bitrate=250 -o 250bit-xvid.avi

DVD2Divx
To get an idea of bitrate # mencoder -ovc frameno -o frameno.avi -oac mp3lame -lameopts abr:br=128 vts_19_1.vob
single file # mencoder -oac mp3lame -o 6in1.avi -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1000:vhq:vqmin=2:vqmax=31 vts_19_1.vob
Multiple VOB files
# nice -+19 cat /media/cdrom/*vob | nice-+19 mencoder -ovc frameno -o $1 -oac mp3lame -lameopts abr:br=128 -
# cat /space/*vob | nice -+19 mencoder -oac copy -o /dev/null -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1000:vhq:vpass=1:vqmin=2:vqmax=31 -npp lb -
# cat /space/*vob | nice -+19 mencoder -oac copy -o $1 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1000:vhq:vpass=2:vqmin=2:vqmax=31 -npp lb -

http://smorgasbord.net/convert_video_linux
FFMPEG on the command line:
Values for -target “vcd”, “svcd”, “dvd”, “dv”, “pal-vcd”, “ntsc-svcd”
ffmpeg -i “$movie” -f avi -vcodec xvid -b 800 -g 300 -bf 2 -acodec mp3 -ab 128 -y “$xvid_file”

Following is working fine for me (all encompassed in dat2divx script)
Use cdxa2mpeg (from GNUVcdImager) to convert DAT to mpg
$ cdxa2mpeg -v AVSEQ01.DAT AVSEQ01.mpg
A sample XVid conf file was copied from /usr/lib/transcode/xvid4.cfg to ~/.transcode/, modifiy it to taste
$ transcode -i AVSEQ01.mpg -o AVSEQ01.avi -y xvid -R1
$ transcode -i AVSEQ01.mpg -o AVSEQ01.avi -y xvid -R2

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September 25, 2006 - Posted by | Tech Babble

8 Comments »

  1. Very useful snippets here. Although I believe your ffmpeg command uses the bitrate as defined “-b 800″ which is actually 800 BITS and not 800KBits, Unless thats what you wanted to do.
    my 2 cents.

    Comment by vangel | May 15, 2007 | Reply

  2. sorry for the typo above , I meant bits and kbits. Not to be confused with the B and KB which translates to bytes.

    Comment by vangel | May 15, 2007 | Reply

  3. hmmmm…very interesting!
    Thanks google

    Comment by endeapono | January 17, 2008 | Reply

  4. good afternoon,,,
    my name’s rerey..
    i want to ask you, Sir…
    how do we can convert .DAT to .MPEG with ffmpeg in Slackware 12.0???

    I need your reply as soon as possible..
    i hope, you’ll send a reply to my e-mail rerey3@gmail.com

    thank you so mch for your attention..

    Comment by rereynanda | May 28, 2008 | Reply

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    Comment by Kristine | May 8, 2013 | Reply


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