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• Raspberry Pi : Playing multiple video files in mkfifo pipe

  19 janvier 2017, par user3246167

  I have 2 files, test.mp4 and test2.mp4 that I want to play concurrently with no noticeable break in the middle. Currently I’m using

  mkfifo test
  
  cat test.mp4 > test &
  
  cat test2.mp4 > test &
  
  omxplayer test

  However, when I do this, omxplayer just returns data and doesn’t play the file. But if I just put a single file into the pipe, omxplayer shows it normally. I’ve also tried using the copy command in ffmpeg, and that also just returns data, doesn’t play the file.

  I understand that I can just concatenate the 2 files together, but that will not work for my purposes, because I will need to be able to feed files to the pipe while omxplayer is running

• Windows Batch - Change the beginning of a path but keep the rest

  21 juin 2014, par o_ren

  I’m running FFMPEG for video encoding.
  I have a batch file which will encode files you drop on it, keeping the file’s original name and copy the encoded files to a specific directory.
  I would like that script to "know" the original’s file path and copy the encoded file to a path relative to it, meaning :
  original file dropped on batch file is in C :\some\folder\show\season\episode\file.mov
  encoded file should be encoded to D :\different\directory\show\season\episode\file.mp4
  The part of the path up until \show is fixed.

  This is what I have so far :
  

  @echo on
  
  
  
  set count=0
  
  for %%a in (%*) do (<br />
  
    if exist %%a (
  
  
  
          md \\specific\path\"%%~na"
  
  
  
          %MYFILES%\ffmpeg.exe -i "%%~a" -vcodec libx264 -preset medium -vprofile baseline -level 3.0 -b 500k -vf scale=640:-1 -acodec aac -strict -2 -ac 2 -ab 64k -ar 48000 "%%~na_500.mp4"
  
          copy "%%~na_500.mp4" "\\specific\path\"%%~na"\%%~na_500.mp4"
  
          copy "%%~na_500.mp4" "\\specific\path\"%%~na"\%%~na_500.mp4"
  
          del "%%~na_500.mp4"

  set /a count+=1

  ) else (
  echo Skipping non-existent %% a
  
  

  Thank you,
  Oren

• how to fix ffmpeg error on android python [duplicate]

  15 août 2022, par Davidazad

  I want to port my app for android. I need to import VideoFileClip but this error will show :
No ffmpeg exe could be found . Install ffmpeg on your system , or set the IMAGEIO_FFMPEG_EXE environment variable .
I used this :
os.environ["IMAGEIO_FFMPEG_EXE"] = "/usr/bin/ffmpeg"
but this error will show :
  
no such file or directory: '/usr/bin/ffmpeg'
Note : on pydroid3 with using os.environ["IMAGEIO_FFMPEG_EXE"] = "/usr/bin/ffmpeg" the problem will fix.
please help me