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• Comparing two similar videos of different run time length

  5 décembre 2016, par Sachin Bansal

  I have two videos of a single selenium automation script. One is a baseline video and I want to compare the second video with this baseline video. In comparison I want to capture the screenshots of the frames that are not matching.

  The problem is that the videos might not be of same size and run time as the running of scripts depends on network.

  I have tried ffmpeg for this, but that didn’t result in any fruitful result. Can anyone guide me in a right direction on how to get a head-start in this.

  Thanks

• FFmpeg conversion to mp3 works in terminal, not in script

  19 juillet 2013, par user2598172

  I can run

  ffmpeg -i test.m4a -vn -acodec libmp3lame -ab 256k test.mp3

  And it works perfectly. However, when I have the line :

  ./ffmpeg -i "$SONG_SAVE.m4a" -vn -acodec libmp3lame -ab 256k "$SONG_SAVE$EXT" &> /dev/null

  running in a .sh script (downloading the same file that I was able to successfully convert through the terminal), it returns an mp3 file with no audio data. Does anyone have any idea what could be causing this ? Thanks !

  EDIT : here is the whole script :

   #!/bin/bash
  
  
  
  TITLE="$(echo "$1" | ./recode html..ascii | tr -d '\' | tr -s ' ' | sed 's|\ *$||')"
  
  TAG_TITLE="$2"
  
  ARTIST="$(echo "$3" | ./recode html..ascii | tr -d '\' | tr -s ' ')"
  
  ALBUM="$(echo "$4" | ./recode html..ascii | tr -d '\' | tr -s ' ')"
  
  IMG="$5"
  
  TRACK_NUMBER="$6"
  
  TOTAL_TRACKS="$7"
  
  URL="$8"
  
  MIX_TITLE="$9"
  
  CONVERT="${10}"
  
  RECURSIVE="${11}"
  
  SESSION_ID="${12}"
  
  DOWNLOAD_ID="${13}"
  
  SONG_ID="${14}"
  
  
  
  SONG_SAVE="songs/$SONG_ID"
  
  ZIP_SAVE="$SESSION_ID-$DOWNLOAD_ID.zip"
  
  ZIP_DIR="$MIX_TITLE/"
  
  ARTWORK_SAVE="artwork/$MIX_TITLE.png"
  
  SAVE_TITLE="$(echo "$TITLE" | sed 's|/|-|g;s|^\.||g')"
  
  
  
  [ "$TAG_TITLE" == "false" ] && unset TITLE
  
  [ "$ARTIST" == "false" ] && unset ARTIST
  
  [ "$ALBUM" == "false" ] && unset ALBUM
  
  [ "$IMG" == "false" ] && unset IMG
  
  [ "$TRACK_NUMBER" == "false" ] && unset TRACK_NUMBER TOTAL_TRACKS
  
  [ "$CONVERT" == "false" ] && unset CONVERT
  
  [ "$RECURSIVE" == "false" ] && unset RECURSIVE
  
  
  
  while [ -f "SONG_SAVE".part ]; do
  
      sleep 2
  
  done
  
  
  
  if [ -f "$SONG_SAVE".m4a ]; then
  
      EXT=".m4a"
  
      touch "$SONG_SAVE$EXT"
  
  elif [ -f "$SONG_SAVE".mp3 ]; then
  
      EXT=".mp3"
  
      touch "$SONG_SAVE$EXT"
  
  else
  
      curl -Lso "$SONG_SAVE".part "$URL"
  
  
  
      if [ -n "$(file -b "$SONG_SAVE".part | grep "MPEG ADTS")" ]; then
  
          EXT=".mp3"
  
      elif [ -n "$(file -b "$SONG_SAVE".part | grep "MPEG v4")" ]; then
  
      EXT=".m4a"
  
  else
  
      EXT=".txt"
  
      echo "Unable to download: $URL. Sorry ):" > "$SONG_SAVE".part
  
  fi
  
  
  
  mv "$SONG_SAVE".part "$SONG_SAVE$EXT"
  
  fi
  
  
  
  if [ -n "$CONVERT" ] && [ "$EXT" == ".m4a" ]; then
  
  EXT=".mp3"
  
  if [ ! -f "$SONG_SAVE$EXT" ]; then
  
      ./ffmpeg -i "$SONG_SAVE.m4a" -vn -acodec libmp3lame -ab 256k "$SONG_SAVE$EXT"         &> /dev/null
  
      fi
  
  fi
  
  
  
  if [ "$EXT" == ".mp3" ]; then
  
      ./eyeD3 --remove-images -t "$TITLE" -a "$ARTIST" -A "$ALBUM" -n "$TRACK_NUMBER" -N     "$TOTAL_TRACKS" "$SONG_SAVE$EXT" &> /dev/null
  
      if [ -n "$IMG" ]; then
  
      [ ! -f "$ARTWORK_SAVE" ] && curl -Lso "$ARTWORK_SAVE" "$IMG"
  
          ./eyeD3 --add-image="$ARTWORK_SAVE":FRONT_COVER "$SONG_SAVE$EXT" &> /dev/null
  
      fi
  
  elif [ "$EXT" == ".m4a" ]; then
  
  if [ -n "$IMG" ]; then
  
      [ ! -f "$ARTWORK_SAVE" ] && curl -Lso "$ARTWORK_SAVE" "$IMG"
  
      if [ -n "$TRACK_NUMBER" ]; then
  
          ./mp4tags -P "$ARTWORK_SAVE" -s "$TITLE" -a "$ARTIST" -R "" -A "$ALBUM" -t "$TRACK_NUMBER" -T "$TOTAL_TRACKS" "$SONG_SAVE$EXT" &> /dev/null
  
      else
  
          ./mp4tags -P "$ARTWORK_SAVE" -s "$TITLE" -a "$ARTIST" -R "" -A "$ALBUM" "$SONG_SAVE$EXT" &> /dev/null
  
      fi
  
  else
  
      if [ -n "$TRACK_NUMBER" ]; then
  
          ./mp4tags -r P -s "$TITLE" -a "$ARTIST" -R "" -A "$ALBUM" -t "$TRACK_NUMBER" -T "$TOTAL_TRACKS" "$SONG_SAVE$EXT" &> /dev/null
  
      else
  
          ./mp4tags -r P -s "$TITLE" -a "$ARTIST" -R "" -A "$ALBUM" "$SONG_SAVE$EXT" &> /dev/null
  
          fi
  
      fi
  
  fi
  
  
  
  if [ -n "$RECURSIVE" ]; then
  
      cd archives
  
      mkdir -p "$ZIP_DIR"
  
      chmod 777 "$ZIP_DIR"
  
      cp "../$SONG_SAVE$EXT" "$ZIP_DIR$SAVE_TITLE$EXT"
  
      ./zip -q -0 -D -r "$ZIP_DIR$ZIP_SAVE" "$ZIP_DIR$SAVE_TITLE$EXT" &> /dev/null
  
      rm -f "$ZIP_DIR$SAVE_TITLE$EXT"
  
      printf "archives/$ZIP_DIR$ZIP_SAVE\n$MIX_TITLE.zip\n$EXT\n"
  
      echo "$(du -h "$ZIP_DIR$ZIP_SAVE" | tr '\t' '\n' | head -1)"
  
  else
  
      printf "$SONG_SAVE$EXT\n$SAVE_TITLE$EXT\n$EXT"
  
  fi

• python ff-mpeg not working on VM

  2 août 2013, par Bob

  I have two Windows 2008 R2 64 bit servers with two different host providers (GoDaddy and company B). My python script runs successfully on GoDaddy's server. It doesn't run successfully on the server with company B.

  I installed the same software on both servers :

  • Python 2.7 for Windows 32 bit
  • NumPY module
  • SetupTools
  • EchoNest API for Windows

  The company B server is giving me an error related to an executable called en-ffmpeg.exe that uses the python ff-mpeg module. The exact error message is

  [dv @ 0x1449690]Can't determine profile of DV input stream.
  C :\Music\song1.mp3 : Error while opening file

  The song.mp3 file exists. I installed the latest Windows updates on the server with Company B but still I get the error. I believe the error is because something is not configured properly on this server (missing libraries or drivers ?). However, I don't know what that is !

  Please help :)

  UPDATED TO INCLUDE COMMAND AND ERROR OUTPUT FROM FFMPEG

  COMMAND :

  c :\Python27>en-ffmpeg -i "C :\Music\song1.mp3" -y -ac 2 -ar 44100
  "c :\users\x07 dmini 1\x07ppdata\local\temp\x02\tmpax82jf.wav"

  FULL ERROR :

  FFmpeg version SVN-r17988-Komeil, Copyright (c) 2000-2009 Fabrice Bellard, et al
  
  .
  
    configuration: --enable-memalign-hack --extra-cflags=-fno-common --enable-stat
  
  ic --disable-shared --disable-debug --enable-gpl --enable-nonfree --enable-avfil
  
  ter --enable-avfilter-lavf --enable-avisynth --enable-postproc --enable-pthreads
  
   --enable-libamr-nb --enable-libamr-wb --enable-libgsm --enable-libfaac --enable
  
  -libfaad --enable-libmp3lame --enable-libschroedinger --enable-libspeex --enable
  
  -libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
  
    libavutil     50. 0. 0 / 50. 0. 0
  
    libavcodec    52.21. 0 / 52.21. 0
  
    libavformat   52.31. 1 / 52.31. 1
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    libavfilter    0. 4. 0 /  0. 4. 0
  
    libswscale     0. 7. 1 /  0. 7. 1
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
    built on Mar 15 2009 18:16:31, gcc: 4.3.0 20080305 (alpha-testing) mingw-20080
  
  502
  
  [dv @ 0x1449690]Can't determine profile of DV input stream.
  
  C:\\Music\\song1.mp3: Error while opening file

  I also tried removing the double back slashes from the command but got the same error.