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Sur d’autres sites (13356)

  • Python 3 subprocess.popen() doesn't work on linux. Works on windows [closed]

    30 avril 2021, par user2628458
    process = subprocess.Popen(
    cmd, shell=True,
    stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
     universal_newlines=True)
for line in process.stdout:
    # ...


    


    I have this line that executes an FFmpeg job and throws out every line in the output to a variable. It works fine on Windows, but doesn't work at all on Linux. The for loop never gets executed. I can't find anything about this, or the difference between Windows and Linux subprocess.Popen(). Can you please point me the right way to fix this ?

    


  • avconv : make -aspect work with streamcopy

    26 mai 2013, par Anton Khirnov
    avconv : make -aspect work with streamcopy
    • [DH] avconv.c
    • [DH] avconv_opt.c

  • %a and %%a suddenly don't work in Win 10 cmd and batch file respectively ?

    14 janvier 2017, par cobaltB12

    I was trying to batch convert a folder of .flac to .mp3 using FFMPEG, but when i ran my batch file I got the "%F is unexpected at this time" error, even though i used "%%F" in the batch file. To test what was really the problem, i proceeded to type variations of %F into cmd directly, but could not get it to work either. Did something change in windows 10 regarding the use of variable names in the for loop ?

    cmd commands I tried :

    C:\Users\yt\Music\Joe Hisaishi (Classical Guitar) - Copy>for "%F" in     (*.flac) echo %F
    
"%F" was unexpected at this time.
    

    
C:\Users\yt\Music\Joe Hisaishi (Classical Guitar) - Copy>for %F in     (*.flac) echo %F
    
echo was unexpected at this time.
    

    
C:\Users\yt\Music\Joe Hisaishi (Classical Guitar) - Copy>for "%%F" in     (*.flac) echo %%F
    
"%%F" was unexpected at this time.
    

    
C:\Users\yt\Music\Joe Hisaishi (Classical Guitar) - Copy>for "%f" in     (*.flac) echo %f
    
"%f" was unexpected at this time.
    

    
C:\Users\yt\Music\Joe Hisaishi (Classical Guitar) - Copy>for "%g" in     (*.flac) echo %g
    
"%g" was unexpected at this time.
    

    
C:\Users\yt\Music\Joe Hisaishi (Classical Guitar) - Copy>for "%g" in     ("*.*") echo %g
    
"%g" was unexpected at this time.
    

    
C:\Users\yt\Music\Joe Hisaishi (Classical Guitar) - Copy>for "%g" in     ("*.*") do echo %g
    
"%g" was unexpected at this time.

    original batch file for FFMPEG

    cd "\Users\yt\Music\Joe Hisaishi (Classical Guitar) - Copy"
    
echo in directory "%cd%"
    
pause
    
for "%%F" in ("*.flac") do (
    
echo converting "%%F"
    
"C:\Users\yt\Downloads\OtherApps\FFMPEG\bin\ffmpeg.exe" -i "%%F"     -codec:a libmp3lame -qscale:a 2 "%%~nF.mp3"
    
echo del "%%F"
    
)
    
cd "%~dp0"

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