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• Build failed in step 'Retrieving needed toolchain components' tarballs

  31 mars 2016, par VaFancy

  I tried to build crosstool in my raspberry pi, and the procedure I followed was from How to compile FFmpeg for Raspberry Pi (Raspbian). When I finished ct-ng build(which took a very long time), an error occurred. It shows that Build failed in step 'Retrieving needed toolchain components' tarballs called in step '{top-level}'

  Here is the error I copied from build.log.

  [ERROR]  
  
  [ERROR]  >>
  
  [ERROR]  >>  Build failed in step 'Retrieving needed toolchain components' tarballs'
  
  [ERROR]  >>        called in step '(top-level)'
  
  [ERROR]  >>
  
  [ERROR]  >>  Error happened in: do_kernel_get[scripts/build/kernel/linux.sh@735]
  
  [ERROR]  >>        called from: main[scripts/crosstool-NG.sh@576]
  
  [ERROR]  >>
  
  [ERROR]  >>  For more info on this error, look at the file: 'build.log'
  
  [ERROR]  >>  There is a list of known issues, some with workarounds, in:
  
  [ERROR]  >>      '/opt/cross/share/doc/crosstool-ng/ct-ng.1.19.0/B - Known issues.txt'
  
  [ERROR] 

  How can I solve this ? Please help me, I’ve already wasted 2 days on it.

• SNAP : Simulation and Neuroscience Application Platform

  2 décembre 2014, par Sumit

  Is there any documentation/help manual on how to use SNAP (Simulation and Neuroscience Application Platform)1.

  I wanted to run the Motor Imagery sample scenario with a .avi file for the stimulus instead of the image. How can that be done ?

  The following error is obtained when using the AlphaCalibration scenario which gives code to play an avi file.Any help appreciated

  :movies:ffmpeg(warning): parser not found for codec indeo4, packets or times may be invalid.
  
  :movies:ffmpeg(warning): max_analyze_duration 5000000 reached at 5000000
  
  :movies(error): Could not open /e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi
  
  :audio(error): Cannot open file: /e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi
  
  :audio(error): Could not open audio /e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi
  
  :movies:ffmpeg(warning): parser not found for codec indeo4, packets or times may be invalid.
  
  :movies:ffmpeg(warning): max_analyze_duration 5000000 reached at 5000000
  
  :movies(error): Could not open /e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi
  
  :gobj(error): Texture "/e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi" exists but cannot be read.
  
  Traceback (most recent call last):
  
    File "E:\BCI_Feb2014\SNAP-master\src\framework\latentmodule.py", line 458, in _run_wrap
  
      self.run()
  
    File "modules\BCI\AlphaCalibration.py", line 30, in run
  
  Exception during run():
  
      m = self.movie(self.moviefile, block=False, scale=[0.7,0.4],aspect=1.125,contentoffset=[0,0],volume=0.3,timeoffset=self.begintime+t*self.awake_duration,looping=True)
  
  Could not load texture: bird.avi
  
    File "E:\BCI_Feb2014\SNAP-master\src\framework\basicstimuli.py", line 348, in movie
  
      tex = self._engine.base.loader.loadTexture(filename)
  
    File "E:\BCI_Feb2014\Panda3D-1.8.0\direct\showbase\Loader.py", line 554, in loadTexture
  
      raise IOError, message
  
  IOError: Could not load texture: bird.avi

• Using FFMPEG on Google Cloud Platform

  27 mars 2021, par itsSLO

  I'm storing audio files on Google Cloud Storage (through Firebase storage).

  



  I need to use FFMPEG to convert the audio file from stereo (two channels) to mono (one channel).

  



  How can I perform the above conversion on Google Cloud Platform ?

  



  Update :
I suspect one possibility is to use Google Compute Engine to create a virtual machine, install ffmpeg, and somehow gain access to the audio files.

  



  I'm not sure if this is the best way or even possible. So I'm still investigating.