Convert and Split Video fiel in Linux

1. Convert Video file
1) To convert mp4 video to avi:

mencoder video.mp4 -ovc lavc -vf scale=352:288 -oac lavc -o video.avi

2) To convert avi to mpeg video:

ffmpeg -i video.avi -target pal-vcd video.mpg

or

ffmpeg -i video.avi -target pal-vcd -s 352x192 -padtop 32 -padbottom 32 video.mpg

Note: -target pal-vcd is for PAL. For NTSC, use -target ntsc-vcd. -padtop 32 and -padbottom 32 will add black padding at the top and bottom.

In certain cases, if you have problem with de-sync audio for the resulted mpeg, try using mencoder like this for PAL format VCD:

mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=xvcd -vf \
scale=352:288,harddup -srate 44100 -af lavcresample=44100 -lavcopts \
vcodec=mpeg1video:keyint=15:vrc_buf_size=327:vrc_minrate=1152:\
vbitrate=1152:vrc_maxrate=1152:acodec=mp2:abitrate=224 -ofps 25 \
-o movie.mpg movie.avi

3) To convert avi to SVCD format:

ffmpeg -i video.avi -target pal-svcd video.mpg

Note: -target pal-svcd is for PAL. For NTSC, use -target ntsc-svcd.

see details in http://muhdzamri.blogspot.com/search/label/ffmpeg

4) To convert wmv to avi format

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

5) To convert mov to avi format

mencoder -ovc copy -oac pcm -o output.avi

2. Split Video file
1) To split avi

avisplit -s 700 -i my_file.avi

will split the file my_file.avi into chunks which's maximum size will not exceed 700 MB, i.e. they will fit onto a CD, each. The created chunks will be named my_file.avi-0000, my_file.avi-0001, etc.

see details in http://www.transcoding.org/cgi-bin/transcode?Avisplit

2. To split mpeg

mpgtx -166 matrix-trailer.mpg -b mychunk

will split matrix-trailer.mpg into 166 playable chunks with the basename mychunk

see details in http://mpgtx.sourceforge.net/#Examples