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• avcodec/nvenc : Remove always-true check

  31 juillet 2023, par Andreas Rheinhardt

  avcodec/nvenc : Remove always-true check
  nvenc_store_frame_data() is always called with frame != NULL
  
  (checked at the beginning of nvenc_send_frame()) ;
  
  in fact, frame is dereferenced unconditionally after the block
  
  guarded by the check for frame. Therefore Coverity complains
  
  about this in issue #1538295.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/nvenc.c

• avcodec/error_resilience, mpeg12dec : Remove always-true checks

  1er août 2023, par Andreas Rheinhardt

  avcodec/error_resilience, mpeg12dec : Remove always-true checks
  Having a decode_slice callback is mandatory for HWAccels ;
  
  the only exception to this (and the reason why these checks
  
  were added) was XvMC, but it is no more since commit
  
  be95df12bb06b183c8d2aea3b0831fdf05466cf3.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/error_resilience.c
  • [DH] libavcodec/mpeg12dec.c

• subprocess.Popen can't find the file when shell=False and doesn't know ffmpeg when shell=True [duplicate]

  26 novembre 2023, par Waschbrettwade

  I am trying to get an offline speech-to-text library called "vosk" running following this tutorial : https://medium.com/@johnidouglasmarangon/automatic-speech-recognition-with-vosk-828569219f2b

  


  In this, subprocess.Popen is being used like this :

  


  ffmpeg_command = [
            "ffmpeg",
            "-nostdin",
            "-loglevel",
            "quiet",
            "-i",
            filename,
            "-ar",
            str(SAMPLE_RATE),
            "-ac",
            "1",
            "-f",
            "s16le",
            "-",
        ]

    with subprocess.Popen(ffmpeg_command, stdout=subprocess.PIPE) as process:


  


  When running this in Jupyter Notebook, no problem at all. But whenever I run this in VSCode, it produces the error :

  


  FileNotFoundError: [WinError 2] The system couldn't find the specified file (translated to English by me)


  


  When using shell=True as in

  


  with subprocess.Popen(ffmpeg_command, stdout=subprocess.PIPE, shell=True) as process:


  


  it tells me in the terminal (translated) :

  


  The command "ffmpeg" ist either written wrong or couldn't be found. 


  


  Do you have any idea what's causing these issues and how to fix them ?