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• How to get ffmpeg to run on Heroku ? (libpulsecommon-15.99.so error)

  10 octobre 2023, par Fabien Snauwaert

  I'm trying to run ffmpeg on Heroku using an Aptfile (for use in a Flask app where I want to be able to perform audio conversions using pydub, which works fine locally.)

  


  # Aptfile
libsndfile1
libsndfile1-dev
ffmpeg
libvpx7
libpulse0
pulseaudio


  


  I've got these buildpacks :

  


  # Output from `heroku buildpacks`
1. heroku-community/apt
2. heroku/python


  


  And I keep getting this error with a simple heroku run 'ffmpeg --version' :

  


  


  ffmpeg : error while loading shared libraries : libpulsecommon-15.99.so : cannot open shared object file : No such file or directory

  


  


  This is on Heroku-22, but I was getting the same error on Heroku-20.

  


  Now I've spent hours on this and I'm still confused as to...

  


  

  1. What is libpulsecommon-15.99.so even part of ?

  


  2. Is it a case of the library not being installed ? Or being installed but not found ?

  


  


  

  • ls $HOME/.apt/usr/lib/x86_64-linux-gnu | grep libpulse (where $HOME is /app/) gives :

  


  


  libpulse-simple.so.0
libpulse-simple.so.0.1.1
libpulse.so.0
libpulse.so.0.24.1


  


  

  • echo $LD_LIBRARY_PATH returns /app/.heroku/vendor/lib:/app/.heroku/python/lib:/app/.apt/usr/lib/x86_64-linux-gnu:/app/.apt/usr/lib/i386-linux-gnu:/app/.apt/usr/lib:

  


  


  I'm lost and these are hours of my life I'm not going to get back 🤔😅

  


  ---

  


  I'm also wondering if there's much a point trying to get ffmpeg to work on Heroku this way : with the dependencies listed above (in the Aptfile), I'm already at 487 MB in slug size (out of a 300 MB soft limit, 500 MB hard limit), for a codebase under 1 MB.

  


  Any help welcome. I'll update the question as needed.

  


• What's the proper way to use Docker multi-stage builds to copy a package installed with apt ?

  25 décembre 2023, par Leo Jiang

  I have apt-get -y install ffmpeg --no-install-recommends in my dockerfile and it's taking up more than half the image size (500MB). I read somewhere that I can try using Docker multi-stage build to reduce the file size.

  


  Am I supposed to do something like :

  


  FROM node:20.9.0-slim
RUN apt-get -y update \
  && apt-get -y install ffmpeg --no-install-recommends \
  && apt-get clean

FROM node:20.9.0-slim
COPY --from=0 /usr/bin/ffmpeg
COPY --from=0 /usr/bin/ffplay
COPY --from=0 /usr/share/ffmpeg/ffprobe.xsd
COPY --from=0 /usr/share/lintian/overrides/ffmpeg


  


  I ran dpkg -L ffmpeg to see that ffmpeg has 30 files. Am I supposed to copy over all of the files or is just /usr/bin/ffmpeg enough ? If I have to copy all of them, it seems like it'll break easily.

  


• ffmpeg taking so much time to extract frames from mpeg-ts file

  19 septembre 2016, par Syed Azaruddin

  I got a problem from one mpeg-ts video. Actually it was created by some one else and even I don’t know how they are created. The problem is that, ffmpeg is taking so much time to decode all frames from the mpeg-ts video. The command I used for this operation is...

  ffmpeg -i shame-run.mov -r 24/1 test/output%d.jpg

  Actually my application is integrated with ffmpeg v2.1.1. and I had a code for detecting black frames in a mpeg-ts video. Here, my code is not able to detect all black frames from ffmpeg for this mpeg-ts video. So, I taken standalone ffmpeg of same version as mentioned above and decoded standalone. But, it is taking so much time i.e., it is taken half an hour for decoding 1 min duration video.

  So, is there any reason is that ffmpeg not able to extract as fast as required, and is there any reason that video got some errors.