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• Crontab starts again before the process of conversion in ffmpeg ends (depending on time suppose /2 minutes) How to Control that ?

  4 février 2018, par A Sahra

  I am running a bash .sh file every two minutes with crontab. the problem is that when crontab runs bash file the process of ffmpeg video conversion starts,the conversion time varies depending on length of videos, i have set the crontab to run every two minutes. crontab runs again after two minutes before end of ffmpeg conversion.

  How to Figure out :

  control of crontab and conversion process so the crontab doesn’t starts again until process of conversion is not completed.

  #!/bin/bash
  
  # set PATH to check existance of video file in this directory
  
  checkfiles=/home/webuser/public_html/shareportal/convert_Up_videos/*
  
  checkforfiles=/home/webuser/public_html/shareportal/convert_Up_videos
  
  movetodire=/home/webuser/public_html/shareportal/uploaded_videos/
  
  conversionprocessdir=/home/webuser/public_html/shareportal/conversion_process/
  
  movetoArchive=/home/webuser/public_html/shareportal/Video_Archive/
  
  blockpath=/home/webuser/public_html/shareportal/block.txt
  
  processid=/home/webuser/public_html/shareportal/processid.txt
  
  #format of output video file
  
  webm='webm'
  
  if [ "$(ls -A $checkforfiles)" ]
  
  then 
  
  #check directory for files to convert
  
  for f in $checkfiles
  
      do  
  
          fullfilename="$f"
  
          filename=$(basename "$f")
  
          filewithoutextforimage="${filename%.*}"
  
          nametofile=$filewithoutextforimage | cut -c1-10;
  
          echo $filewithoutextforimage | cut -c1-10 1> $blockpath 2>&1
  
      filewithoutext="${f%.*}"
  
      fileextention="${f##*.}"
  
      image_path='/home/webuser/public_html/shareportal/video_images/'$filewithoutextforimage'.png'
  
      outputfilename=$conversionprocessdir"$filewithoutextforimage.webm"
  
      #ffmpeg conversion process starts here
  
      if (ffmpeg -i "$f" "$outputfilename" 1>> $blockpath 2>&1) 
  
      then 
  
          #Extract Image of video file on provided time stamp
  
          if (ffmpeg -ss 00:00:06 -i "$f" -vframes:v 1 "$image_path") 
  
          then
  
              echo "Image Extracted"
  
          else
  
              echo "Could not Extract Image"
  
          fi
  
          echo "Video Converted";
  
      else
  
          echo "Could Not Convert Video"
  
      fi
  
      #conversion Ends!!
  
      mv "$outputfilename" $movetodire
  
      mv "$fullfilename" $movetoArchive
  
  done
  
  else
  
  echo "File Not Found Directory is empty!!!-----"
  
  fi

• ffmpeg minimal linux build with only one filter [closed]

  31 juillet 2024, par at8993

  I am aiming to compile a minimal build of ffmpeg for Ubuntu 22.04. The application requires only the concat filter for .mp4s using H.264 video encoder.

  


  I have followed this guide and used the following commands to include libx264 only :

  


  sudo apt-get update -qq && sudo apt-get -y install \
  autoconf \
  automake \
  build-essential \
  cmake \
  git-core \
  libass-dev \
  libfreetype6-dev \
  libgnutls28-dev \
  libmp3lame-dev \
  libsdl2-dev \
  libtool \
  libva-dev \
  libvdpau-dev \
  libvorbis-dev \
  libxcb1-dev \
  libxcb-shm0-dev \
  libxcb-xfixes0-dev \
  meson \
  ninja-build \
  pkg-config \
  texinfo \
  wget \
  yasm \
  zlib1g-dev

mkdir -p ~/ffmpeg_sources ~/bin

sudo apt-get install libx264-dev


  


  and for the configure command I have used the following options with a view to only enable what's necessary for concat.

  


  cd ~/ffmpeg_sources && \
wget -O ffmpeg-snapshot.tar.bz2 https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2 && \
tar xjvf ffmpeg-snapshot.tar.bz2 && \
cd ffmpeg && \

PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
  --prefix="$HOME/ffmpeg_build" \
  --pkg-config-flags="--static" \
  --extra-cflags="-I$HOME/ffmpeg_build/include" \
  --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
  --extra-libs="-lpthread -lm" \
  --ld="g++" \
  --bindir="$HOME/bin" \
  --disable-everything \
  --enable-filter=concat \
  --enable-avformat \
  --enable-avdevice \
  --enable-avcodec \
  --enable-decoder=h264 
  --enable-libx264 
  --enable-muxer=mp4 
  --enable-gpl

PATH="$HOME/bin:$PATH" make && \
make install && \
hash -r


  


  However running

  


  ffmpeg -f concat -i files_to_merge.txt -c copy output.mp4


  


  returns error

  


  ffmpeg -f concat -i files_to_merge.txt -c copy output.mp4
ffmpeg version N-116445-gb1d410716b Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
  configuration: --prefix=/home/user/ffmpeg_build 
--extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib 
--extra-libs='-lpthread -lm' 
--ld=g++ --bindir=/home/user/bin --disable-everything 
--enable-filter=concat --enable-avformat 
--enable-avdevice --enable-avcodec --enable-decoder=h264
 --enable-libx264 --enable-muxer=mp4 
--enable-gpl
  libavutil      59. 30.100 / 59. 30.100
  libavcodec     61. 10.100 / 61. 10.100
  libavformat    61.  5.101 / 61.  5.101
  libavdevice    61.  2.100 / 61.  2.100
  libavfilter    10.  2.102 / 10.  2.102
  libswscale      8.  2.100 /  8.  2.100
  libswresample   5.  2.100 /  5.  2.100
  libpostproc    58.  2.100 / 58.  2.100
[in#0 @ 0x555605fab640] Unknown input format: 'concat'


  


  I assume this is due to the omission of an enable option in the configure command.

  


  Thanks !

  


• pip requesting package future which is already installed

  27 juin 2019, par grunt2

  Although future is installed, pip is still trying to collect it. This is an offline machine so packages cannot be auto-fetched. Using pip3 instead of python3 -m pip will give same result.

  $ python3 -m pip install ~/future-0.17.1.tar.gz
  
  Processing /home/vader/future-0.17.1.tar.gz
  
  Building wheels for collected packages: future
  
    Running setup.py bdist_wheel for future ... done
  
    Stored in directory: /home/vader/.cache/pip/wheels/c5/09/3a/1433ca68e4b2b77cd517ad0ef03182174a8f2c5fd0a8a89b1f
  
  Successfully built future
  
  Installing collected packages: future
  
  Successfully installed future-0.17.1
  
  $ python3 -m pip install ~/ffmpeg-python-0.1.18.tar.gz
  
  Processing /home/vader/ffmpeg-python-0.1.18.tar.gz
  
  Collecting future (from ffmpeg-python==0.1.18)
  
    Retrying...NewConnectionError...Failed to establish a new connection

  How can I resolve ?