It takes some time to transcode e.g. for a 3.5GB VOB file that contains a 01:16 hour duration video, processing with an AMD Athlon™ II X3 455 Processor (@3,30Ghz),
Make sure those are installed,
dpkg -l mplayer mencoder ogmtools vorbis-tools x264 ffmpeg transcode #libvo-aacenc0 libvo-aacenc-dev #libavcodec-extra
Make sure FFmpeg is x264, VP8 & libvorbis capable,
ffmpeg -codecs 2>&1| grep -i vp8 ffmpeg -codecs 2>&1| grep -i x264 ffmpeg -codecs 2>&1| grep -i vorbis
Look at what presets you got for e.g. x264,
ffmpeg -f lavfi -i nullsrc -c:v libx264 -preset help -f mp4 - 2>&1 | grep Possible
Find out which title number, audio stream and subtitles you wanna RIP from the DVD,
#mplayer -nocache dvdnav:// #mplayer dvd:// mplayer dvd://3 ffmpeg -i /dev/dvd
Note. against an image e.g. add,
mplayer -dvd-device ../file.iso dvd://3
if that’s a protected DVD you might have to install that (two step process),
sudo apt install libdvd-pkg regionset sudo dpkg-reconfigure libdvd-pkg
e.g. to RIP title 3,
dvdxchap -t 3 /dev/dvd > chapters.txt time mplayer -dvd-device iso_or_dvd -dumpstream dvd://3 -dumpfile video.vob #time mplayer -nocache -dumpstream dvdnav://3 -dumpfile video.vob
Find out which streams you want,
ffmpeg -i video.vob
Find out about the delays (look at diff between video PTS & audio PTS),
tcprobe -i video.vob
if there is a difference, you might have to play with -itsoffset and it may become painful.
Then proceed with the transcoding, preferably in a gnu/screen session (so you don’t loose the terminal in case anything goes wrong with your graphical user interface). Here with video no-preset and audio vorbis quality 6,
screen time ffmpeg -i video.vob -acodec libvorbis -aq 6 -vcodec libx264 video.mkv #time ffmpeg -i video.vob -acodec libvorbis -aq 6 -vcodec libx264 -preset ultrafast videoufast.mkv #time ffmpeg -i video.vob -acodec libvorbis -aq 6 -vcodec libx264 -preset veryslow videovslow.mkv
If there is no difference, proceed with the transcoding (first -map points to the video stream and second -map points to the audio stream),
ffmpeg -i video.vob -threads 0 -map 0.0 -map 0.1 -sn -vcodec libx264 -vpre veryslow -crf 20 -acodec libvorbis -ac 2 -aq 4 final.mkv
If e.g. video is 0.1 and audio is 1.1, you need to add -1 offset to the ffmpeg command line,
ffmpeg -i video.vob -itsoffset -1 -i video.vob -map 1.0 -map 0.1 -sn -vcodec libx264 -vpre veryslow -crf 20 -acodec libvorbis -ac 2 -aq 4 final.mkv
Note. libvo-aacenc / libvo_aacenc nor even libfdk-aac / libfdk_aac are available on ubuntu-provided ffmpeg so I’m using libvorbis for the MKV.
#time ffmpeg -i video.vob -an -vcodec libx264 -pass 1 -preset veryslow -threads 0 -b 3000k -x264opts frameref=15:fast_pskip=0 -f rawvideo -y /dev/null #time ffmpeg -i video.vob -acodec libvo-aacenc -ab 256k -ar 96000 -vcodec libx264 -pass 2 -preset veryslow -threads 0 -b 3000k -x264opts frameref=15:fast_pskip=0 video.mkv #time ffmpeg -i video.vob -acodec libvorbis -aq 6 -vcodec libx264 -pass 2 -preset veryslow -threads 0 -b 3000k -x264opts frameref=15:fast_pskip=0 video.mkv ffmpeg -i video.vob -vcodec libvpx -crf 10 -acodec libvorbis -aq 6 video.webm
Proceed with a two pass transcoding to x264 & AAC,
date; time ffmpeg -i video.vob -an -vcodec libx264 -pass 1 -preset veryslow -threads 0 -crf 20 -f rawvideo -y /dev/null; date ls -lhF ffmpeg2pass*log* date; time ffmpeg -i video.vob -acodec libvorbis -aq 6 -vcodec libx264 -pass 2 -preset veryslow -threads 0 video.mkv; date