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• Remove obsolete progress apply call. Closes #3416

  25 août 2015, par blueimp

  Remove obsolete progress apply call. Closes #3416

• FFmpeg - Interrupted System Call

  26 juin 2022, par Bruno Gallego

  I am trying to use FFMPEG HLS Streaming. The code works fine in console application in Linux and Windows. I also load this code (inside a library) dinamically using "dlopen" in Linux and it also works.
The problem raises when I load dinamically from Dart FFI code.
It seems like Dart runs in another thread with another Thread Context without permissions or something like this.

  


  The FFMPEG log output is :

  


  [tcp @ 0x7f00a4084f80] Starting connection attempt to 179.184.214.178 port 80
[tcp @ 0x7f00a4084f80] Connection to tcp://qthttp.apple.com.edgesuite.net:80 failed: Interrupted system call
cannot open input: -4
Interrupted system call


  


  The Code is below :

  


   AVDictionary* options = NULL;
 int err = avformat_open_input(&stream->streamContext, url, nullptr, &options);

 if (err < 0) 
 {
     std::cerr << "cannot open input: " << err << std::endl;

     char errorDescription[1024];
     av_strerror(err, errorDescription, 1024);
     std::cerr << errorDescription << std::endl;

     avformat_free_context(stream->streamContext);
 }


  


• 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 ?