Playing and Encoding Video files on Linux

DVD tracks and Chapters info

mplayer -identify dvd:// -dvd-device /media/DVD_FOLDER/

MPlayer 29092-4.4.0 (C) 2000-2009 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing dvd://.
libdvdread: Encrypted DVD support unavailable.
libdvdread: Couldn't find device name.
ID_DVD_TITLES=2
ID_DVD_TITLE_1_CHAPTERS=51
ID_DVD_TITLE_1_ANGLES=1
ID_DVD_TITLE_2_CHAPTERS=50
ID_DVD_TITLE_2_ANGLES=1
ID_DVD_TITLE_1_LENGTH=13653.600
ID_DVD_TITLE_2_LENGTH=13150.166

PLAYING OPTIONS:
If the DVD video is downloaded on the harddisk, following are the various options to run videos from that DVD folder.

1) To open the DVD folder as a DVD. It will present all the menus of DVD. (note the dvdnav option)

mplayer -mouse-movements dvdnav:// -dvd-device /media/DVD_FOLDER/

2) To run the only chapter 2 from the DVD

mplayer dvd:// -chapter 2-2 -dvd-device /media/DVD_FOLDER/

3) To run the only chapter 5 to 7 from the DVD

mplayer dvd:// -chapter 5-7 -dvd-device /media/DVD_FOLDER/

4) To run 1st track of DVD

mplayer dvd://1 -dvd-device /media/DVD_FOLDER/

5) To view only the specific portion of a video file (based on time slice)

mplayer -ss 00:00:30 -endpos 30 dvdnav://1 -dvd-device /media/DVD_FOLDER/

CONVERSION OPTIONS:

mencoder dvd:// -chapter 2-2 -vf scale=320:240 -o /tmp/test.mp4 -oac faac -faacopts object=2 -ovc lavc -lavcopts vcodec=mpeg4 -of lavf -lavfopts format=mp4 -dvd-device /media/DVD_FOLDER/

mencoder dvd:// -chapter 2-2 -af-add lavcresample=44100 -vf-add harddup -vf-add scale=320:240 -o /tmp/test.mp4 -oac faac -faacopts object=2 -ovc lavc -lavcopts aglobal=1:vglobal=1:vcodec=mpeg4:vbitrate=512:keyint=25 -of lavf -lavfopts format=mp4 -dvd-device /media/DVD_FOLDER/


mencoder dvd:// -chapter 2-2 -af lavcresample=44100 -srate 44100 -vf scale=320:240 -o yahoo.mp4 -mc 0 -oac mp3lame -lameopts vbr=3:br=128:q=9 -ovc lavc -lavcopts aglobal=1:vglobal=1:vcodec=mpeg4:vbitrate=512:keyint=25:vpass=1 -of lavf -dvd-device /media/DVD_FOLDER/

mencoder dvd:// -chapter 2-2 -af lavcresample=44100 -srate 44100 -ovc frameno -oac mp3lame -lameopts vbr=0:br=96 -o frame.mp3 -of lavf -lavfopts format=mp3 -dvd-device /media/DVD_FOLDER/

Extracting RAW audio AUDIO from a Video File (in PCM format i.e. wav)

mplayer /media/Video.avi -vo null -vc null -ao pcm:fast:file=/tmp/audio.wav

Conversion using ffmpeg

/opt/ffmpeg/bin/ffmpeg -i /media/video.avi -i /tmp/audio.mp3 -map 0:0 -map 1:0 -vcodec msmpeg4v2 -s qvga -b 512k -r 30 -acodec copy /tmp/last.mp4

Cutting a scene from a video file

In mplayer , when file is being played, press "o" to see the current position in (time format).
use this information to know how long scene needs to be cut.


mencoder -ss 00:07:20 -endpos 190 -o /tmp/blue.avi -oac faac -faacopts object=2 -ovc lavc -lavcopts vcodec=mpeg4 -of lavf -lavfopts format=mp4 input_vdo_file.avi

Extracting DVD information using HandBrake

./HandBrakeCLI --scan  -i /Volumes/VDO_FOLDER

Extracting Chapter From a DVD dump on a disk using HandBrake

./HandBrakeCLI -i /Volumes/DVD_FOLDER/  -e x264  -q 20.0 -a 1,1 -E faac,copy:ac3 -B 320,160 -6 dpl2,none -R Auto,Auto -D 0.0,0.0 --audio-copy-mask aac,ac3,dtshd,dts,mp3 --audio-fallback ffac3 -f mp4 -4 --decomb --loose-anamorphic --modulus 2 -m --x264-preset medium --h264-profile high --h264-level 4.1 -c 1 -o $HOME/chap1mod.mp4

Note:  “-c 1” in above command is extracting 1st chapter from DVD.