ffmpeg examples

#webm, flac and speex
ffmpeg -i <infile>.??? -quality best|good|realtime|0-10 -crf 0-10 -b:v ???k -b:a ???k <outfile>.webm
ffmpeg -i <infile>.??? -quality best|good|realtime|0-10 -crf 0-10 -b:v ???k -an <outfile>.webm
ffmpeg -i <infile>.??? -vn -b:a ???k <outfile>.webm
ffmpeg -i <infile>.??? -b:a ???k <outfile>.flac
ffmpeg -i <infile>.??? -cbr_quality 0-10 -b:a ???k <outfile>.spx
#ogv
ffmpeg -i <infile>.??? -vcodec libtheora -b:v ???k -acodec libvorbis -b:a ???k <outfile>.ogv
ffmpeg -i <infile>.??? -vcodec libtheora -b:v ???k -acodec flac -b:a ???k <outfile>.ogv
ffmpeg -i <infile>.??? -vcodec libtheora -b:v ???k -cbr_quality 0-10 -acodec libspeex -b:a ???k <outfile>.ogv
ffmpeg -i <infile>.??? -vcodec libtheora -b:v ???k -an <outfile>.ogv
ffmpeg -i <infile>.??? -vcodec libschroedinger -b:v ???k -acodec libvorbis -b:a ???k <outfile>.ogv
ffmpeg -i <infile>.??? -vcodec libschroedinger -b:v ???k -acodec flac -b:a ???k <outfile>.ogv
ffmpeg -i <infile>.??? -vcodec libschroedinger -b:v ???k -cbr_quality 0-10 -acodec libspeex -b:a ???k <outfile>.ogv
ffmpeg -i <infile>.??? -vcodec libschroedinger -b:v ???k -an <outfile>.ogv
#oga
ffmpeg -i <infile>.??? -vn -acodec libvorbis -b:a ???k <outfile>.oga
ffmpeg -i <infile>.??? -vn -acodec flac -b:a ???k <outfile>.oga
ffmpeg -i <infile>.??? -vn -cbr_quality 0-10 -acodec libspeex -b:a ???k <outfile>.oga
#theora+vorbis
ffmpeg2theora -v 10 -V ??? --optimize --soft-target -a 10 -A ??? <infile>
ffmpeg2theora -v 10 -V ??? --optimize --soft-target --noaudio <infile>
ffmpeg2theora --novideo -a 10 -A ??? <infile>