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• how do I only run ffmpeg if not currently running

  6 juin 2019, par RobertW

  I have a script that runs every 10 minutes which causes ffmpeg to run over and over and really slows it down. I’d like to only run one instance at a time so the movies will appear quicker on my website (And not crash my server).

  Here is my code :

  for i in MovieCategories/Category1/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  
  
  for i in MovieCategories/Category2/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  for i in MovieCategories/Category3/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  for i in MovieCategories/Category4/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  
  
  for i in MovieCategories/Category5/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  for i in MovieCategories/Category6/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  for i in MovieCategories/Category7/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  
  
  for i in MovieCategories/Category8/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  for i in MovieCategories/Category9/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  for i in MovieCategories/Category10/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done
  
  
  
  for i in MovieCategories/Category11/*/*.mkv;
  
    do name=`echo $i | cut -d'.' -f1`;
  
    echo $name;
  
    ffmpeg -n -i "$i" "${name}.mp4"; rm -v "${name}.mkv";
  
  done

  I attempted to consolidate them into one command to help a bit but for some reason it mismatched the names from different directories and failed. Overall my main goal is to only run one movie at a time. If you could help consolidate this that would be a bonus. The movies are listed as follow :

  MovieCategories/

  • Category1/

    • Movie1/
      • Movie1.mp4
    • Movie2/
      • Movie2.mkv
    • Movie3/
      • Movie3.mp4
  • Category2/
    • Movie4/
      • Movie4.mp4
    • Movie5/
      • Movie5.mkv
    • Movie6/
      • Movie6.mp4

  And on...

• How to add a fake microphone to android emulator running on linux headless

  2 juin, par Red

  Trying to add a microphone to the android emulator running on Linux headless. Host as no microphone so I need to create fake one and simulate playing some random music for my android test.

  


  In emulator command there is a option to use the host audio as input, by passing
-allow-host-audio but it is not working on the phone.

  


  How to create virtual microphone
Start the pusleaudio

  


  pulseaudio -D --exit-idel-time=-1


  


  Create the fake mic

  


  pactl load-module module-null-sink sink_name=FakeSink


  


  pactl load-module module-remap-source master=FakeSink.monitor source_name=FakeMic

  


  And set to default

  


  pactl sets default FakeSink.monitor


  


  Microphone test

  


  $ffmpeg -f pulse -i default out.wav


$ sox out.wav -n stat

Samples read:            579654

Length (seconds):      6.038062

Scaled by:         2147483647.0

Maximum amplitude:     0.533081

Minimum amplitude:    -0.585297

Midline amplitude:    -0.026108

Mean    norm:          0.067096

Mean    amplitude:     0.003363

RMS     amplitude:     0.093545

Maximum delta:         0.603760

Minimum delta:         0.000000

Mean    delta:         0.073738

RMS     delta:         0.105326

Rough   frequency:         8601

Volume adjustment:        1.709


  


  Run the emulator

  


  emulator -avd and_1 -allow-host-audio -no_window


  


  There was no audio on the phone.

  


• Inotifywait giving wrong file path after running ffmpeg

  23 mars 2019, par Morpheus

  So im running a little inotifywait script to monitor a folder for new files and transcode them if they are mxf and contain a video stream. But for some weird reason if the script does call ffmpeg the next fileevent by inotify is giving me a wrong path seemingly random cutting the filepath at any position.

  So far i tried moving the call to an external script, resetting the file variable which shouldnt matter anyway and adding a sleep to the script. I also tried using normal filepaths without whitespaces or - which shouldnt matter but that also didnt help.

  inotifywait -m -r -e close_write -e moved_to --format "%w%f"  "$dir" | while read f 
  
  
  
  do
  
              if ffprobe "$file" 2>&1 | egrep 'Stream #0:0: Video' && ffprobe "$file" 2>&1 | egrep 'MXF' ; then
  
                  mkdir -vp "$movepath" && mkdir -vp "$trans$path3"  && mkdir -vp "$trans2$path3" && mv -fu "$f" "$trans2$path" && \
  
                  ffmpeg -y -i "$file" -map_metadata 0 -c:v h264_nvenc -b:v 2m -bufsize 2m -profile:v baseline -level:v 3.0 -pix_fmt yuv420p -vf yadif,scale="iw/4:ih/4" -an "$transpath" 2>> copy_ffmpeg_log.txt
  
  done

  expected :

  /media/raid/TMO_Media/INGEST-HP.1/WacinS1_19V01.5C935C93A3B4V.mxf

  example for an result after transcode :

  cinS1_19A06.5C935C93A088A.mxf

  do while normal mv commands work and inotify does work as expected when stopped for transcoding a file the next path given by inotify is getting messed up

  link to the entire script : https://pastebin.com/aRNG4rqz