On Saturday, June 19, 2021, gorge rankin via Cin <[email protected]> wrote:
> 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 > > then setting those variables before CinGG compilation hopefully will enable rubberband EXTRA_LIBS=" -lrubberband" \ FFMPEG_EXTRA_CFG=" --enable-librubberband" \ you can put any interesting/useful for you switches and libs here.... > > 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 >> >
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