For what it's worth, here on Ubuntu 21.04 : ldd /usr/bin/ffmpeg |igrep rubber: librubberband.so.2 => /lib/x86_64-linux-gnu/librubberband.so.2
dpkg -l ffmpeg: Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-==============-========================-============-================================================================ ii ffmpeg 7:4.3.2-0+deb11u1ubuntu1 amd64 Tools for transcoding, streaming and playing of multimedia files On Sat, Jun 19, 2021 at 4:28 PM Andrew Randrianasulu via Cin < [email protected]> wrote: > > > On Saturday, June 19, 2021, Andrew Randrianasulu <[email protected]> > wrote: > >> >> >> On Saturday, June 19, 2021, Phyllis Smith via Cin < >> [email protected]> wrote: >> >>> Gorge, >>> About crashing: >>> >>> That's odd, it's a tweaked version >>>> >>> Not the main.cpp program but the F_atempo plugin inside of Cinelerra. >>> Andrea is much more expert at testing the >>> ffmpeg plugins and it did not crash for him as stated in his email. I >>> did get the plugin to not crash but I do not know >>> what it is doing. >>> >> >> >> random internet search says: >> >> The parameter for atempo must be between 0.5 and 2.0. If you want to slow >> it down even more, you can use the atempo filter more than once. >> Eg. to slow it down by 4: >> ffmpeg -i input.mp4 -filter:a "atempo=0.5,atempo=0.5" -vn output.aac >> >> >> >> https://muzso.hu/2015/04/25/how-to-speed-up-slow-down-an-audio-stream-with-ffmpeg >> >> > more random internet search unearth those finds: > > > > https://patchwork.ffmpeg.org/project/ffmpeg/patch/[email protected]/#21029 > > adds scaletempo filter, probably not in mainstream due to discussion about > how useful or not this new filter might be. > > for rubberband apparently you need librubberband installed and pass > configuration flag to ffmpeg (cingg's build system allow this) > ---- > Apply time-stretching and pitch-shifting with librubberband. > > To enable compilation of this filter, you need to configure FFmpeg with > --enable-librubberband. > ---- > > >> >> >> >> >>> >>>> When it runs , a terminal comes up to show you the technical info. But >>>> the outfile is created. >>>> >>> I am still trying to compile the program because I have to put the >>> include <libavcodec/avcodec.h> in the right place. >>> Then I will test it. ...Phyllis >>> >> -- > Cin mailing list > [email protected] > https://lists.cinelerra-gg.org/mailman/listinfo/cin >
-- Cin mailing list [email protected] https://lists.cinelerra-gg.org/mailman/listinfo/cin
