On Wed, Sep 16, 2009 at 10:03 PM, Carl Karsten <c...@personnelware.com> wrote: > On Wed, Sep 16, 2009 at 9:35 PM, Carl Karsten <c...@personnelware.com> wrote: >> I have about 30 30 min dv files (talks from djangocon) that need the >> audio boosted. >> >> here is a sample: >> >> http://blip.tv/file/get/CarlFK-URDOINGITWRONG524.ogg (made from dv >> with ffmpeg2theora) >> >> http://carlfk.blip.tv/file/2594394/ (flash made from ogg) >> >> What are my options? >> >> I am not too worried about re-encoding it, especially if that's the only way. >> > > http://normalize.nongnu.org/README.html > > http://cis.potsdam.edu/cgi-bin/man/man2html?normalize-audio+1 > > I think I want > > --peak > Adjust using peak levels instead of RMS levels. Each file will be > adjusted so that its maximum sample is at full scale. This just gives > a file the maximum volume possible without clipping; no normalization > is done. >
I also need to drop the left audio chan. This gets me a good audio file: ffmpeg t2.dv -vn t2.wav sox t2.wav -c 1 t2r.wav mixer -r normalize-audio t2r.wav Now I need to mux it back into t2.dv and encode to either ogg or 264. -- Carl K
