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• Runtime.getRuntime().exec() is not running the ffmpeg command on centos

  19 juin 2018, par Karn_way

  I am doing as below on centos machine

  String fileName = "ffmpeg -i file:///home/xyz %d.png";
  
  Runtime.getRuntime().exec(fileName);

  xyz is mp4 file and i want that to create number of different Image frames

  when i am running by java application as above it is not working however if i try to do so directly on terminal it is working, please suggest as what might be wrong ?

• list txt file of ffmpeg concat demuxer

  6 septembre 2018, par Sinan Güler

  I wanted to concat 10 files of mp4 of the same format/size/bitrate....
  I had my files and the txt file under the same directory :

  Macbook Pro>Macintosh HD>Users>my username>downloads
  The txt file I created looks like this :
  https://i.imgur.com/LP7HgSS.jpg
  I entered the following command in terminal :

  ffmpeg -f concat -i mylist.txt -c copy output
  but always got the same result : no such directory
  Maybe somebody could help point out my mistakes, appreciated !

• python3.6 ffmpeg call MacOSX (closed)

  10 avril 2017, par Awazleon

  I’m using Python 3.6 on MacOSX. I would like to use FFmpeg as Python sub-process. Everything works fine when using the OSX embedded Python 2.7 but using 3.6, this doesn’t work.
  I’ve got an error message because it doesn’t find FFmepg.

  raise FFExecutableNotFoundError("Executable ’0’ not found".format(self.executable))
  ffmpy.FFExecutableNotFoundError : Executable ’ffmpeg’ not found

  As you can se I tried with ffmpy but I also got the same result by invoking FFmpeg directly

  from subprocess import call
  call(["ffmpeg"])
  Traceback (most recent call last) :
  File "", line 1, in
  call(["ffmpeg"])
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 267, in call
  with Popen(*popenargs, **kwargs) as p :
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 707, in init
  restore_signals, start_new_session)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1326, in _execute_child
  raise child_exception_type(errno_num, err_msg)
  FileNotFoundError : [Errno 2] No such file or directory : ’ffmpeg’

  I installed the FFmpeg lib. by using Brew through Terminal. It was well installed but only visible by Python 2.7, not 3.6.

  Calling it from terminal is working :

  iMac-de-xxxxx : utilisateur$ ffmpeg

  ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
  built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
  configuration : —prefix=/usr/local/Cellar/ffmpeg/3.2.4 —enable-shared —enable-pthreads —enable-gpl —enable-version3 —enable-hardcoded-tables —enable-avresample —cc=clang —host-cflags= —host-ldflags= —enable-libmp3lame —enable-libx264 —enable-libxvid —enable-opencl —disable-lzma —enable-vda

  I’m not (yet) a Linux specialist but I think that a path is missing for 3.6 to find FFmpeg.
  Any clue to solve this annoying issue ?