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• FFMPEG "Could find no file with path" and "No such file or directory"

  4 May 2020, by bmw_58

  I try to convert a sequence of pictures to video file. 
But I get from ffmpeg the response, that no such file or directory

  



  Does someone have a solution for it?

  



  My command line:

  



  ffmpeg -r 1/5 -start_number 0 -i "C:\Users\USER\Desktop\Pictures\%3d.png" -c:v libx264 -r 30 -pix_fmt yuv420p C:\Users\USER\Desktop\Pictures\out.mp4


  



  The error:

  



          C:\Users\USER>ffmpeg -r 1/5 -start_number 0 -i "C:\Users\USER\Desktop\Pictures\%3d.png" -c:v libx264 -r 30 -pix_fmt yuv420p C:\Users\USER\Desktop\Pictures\out.mp4
    ffmpeg version git-2020-05-01-39fb1e9 Copyright (c) 2000-2020 the FFmpeg developers
      built with gcc 9.3.1 (GCC) 20200328
      configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
      libavutil      56. 43.100 / 56. 43.100
      libavcodec     58. 82.100 / 58. 82.100
      libavformat    58. 42.101 / 58. 42.101
      libavdevice    58.  9.103 / 58.  9.103
      libavfilter     7. 80.100 /  7. 80.100
      libswscale      5.  6.101 /  5.  6.101
      libswresample   3.  6.100 /  3.  6.100
      libpostproc    55.  6.100 / 55.  6.100
    [image2 @ 000002169186c440] Could find no file with path 'C:\Users\USER\Desktop\Pictures\%3d.png' and index in the range 0-4
    C:\Users\USER\Desktop\Pictures\%3d.png: No such file or directory


  



  

  


• pydub cannot find ffprobe despite whatever solutions I tried

  18 April 2020, by Wei

  This is a very similar question to this Pydub unable to locte ffprobe however after following the solution, it still doesn't work :|

  



  I have FFmpeg in path for environment variables as well.

  



  my current code is just a simple one to let myself familiarise with pydub.

  



  from pydub import AudioSegment
import os

directory = r"C:\Users\Wei's PC\Music\Files\Relaxing"

AudioSegment.converter = 'C:\\FFmpeg\\bin\\ffmpeg.exe'
AudioSegment.ffmpeg = "C:\\FFmpeg\\bin\\ffmpeg.exe"
AudioSegment.ffprobe = "C:\\FFmpeg\\bin\\ffprobe.exe"

os.chdir(directory)
file = AudioSegment.from_file(rf'{directory}\test.flac', 'flac')
file.export(f'River Flows in You.mp3', format = 'mp3')


  



  but I keep getting this error

  



  Warning (from warnings module):&#xA;  File "C:\Users\Wei&#x27;s PC\AppData\Local\Programs\Python\Python37\lib\site-packages\pydub\utils.py", line 193&#xA;    warn("Couldn&#x27;t find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning)&#xA;RuntimeWarning: Couldn&#x27;t find ffprobe or avprobe - defaulting to ffprobe, but may not work&#xA;Traceback (most recent call last):&#xA;  File "C:\Users\Wei&#x27;s PC\Documents\Python\testing pydub.py", line 11, in <module>&#xA;    file = AudioSegment.from_file(rf&#x27;{directory}\test.flac&#x27;, &#x27;flac&#x27;)&#xA;  File "C:\Users\Wei&#x27;s PC\AppData\Local\Programs\Python\Python37\lib\site-packages\pydub\audio_segment.py", line 665, in from_file&#xA;    info = mediainfo_json(orig_file)&#xA;  File "C:\Users\Wei&#x27;s PC\AppData\Local\Programs\Python\Python37\lib\site-packages\pydub\utils.py", line 263, in mediainfo_json&#xA;    res = Popen(command, stdin=stdin_parameter, stdout=PIPE, stderr=PIPE)&#xA;  File "C:\Users\Wei&#x27;s PC\AppData\Local\Programs\Python\Python37\lib\subprocess.py", line 800, in __init__&#xA;    restore_signals, start_new_session)&#xA;  File "C:\Users\Wei&#x27;s PC\AppData\Local\Programs\Python\Python37\lib\subprocess.py", line 1207, in _execute_child&#xA;    startupinfo)&#xA;FileNotFoundError: [WinError 2] The system cannot find the file specified&#xA;</module>

  


• What libraries to install, or what package in cmake so that cmake can find synch?

  6 April 2020, by Dov

  Trying to build a video displayer under OpenGL:

  



  Building on Ubuntu19.04, but I would like to build the libraries into the package so there are no external dependencies if at all possible.

  



  https://github.com/Golim4r/OpenGL-Video-Player

  



  Line 26 is

  



  find_package(synch REQUIRED)

Make Error at CMakeLists.txt:26 (find_package):
  By not providing "Findsynch.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "synch", but
  CMake did not find one.


  



  Incidentally, if there is a better c source code for a video displayer under OpenGL, that would be great as well. I have no idea how good this one is.