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• How do you apply filters to ffmpeg in one sentence and put music in the ffmpeg ?

  9 septembre 2017, par 이상우

  I want to put music on a photo with a filter applied.
  However, music will not be inserted and only the video will be played.
  What should I do ?

  "C:/Users/SCITMaster/Desktop/ffmpeg-20170827-ef0c6d9-win64-static/bin/ffmpeg",
  
  "-loop","1","-t","5","-i","photo1.jpg",
  
  "-loop","1","-t","5","-i","photo2.jpg",
  
  "-loop","1","-t","5","-i","photo3.jpg",
  
  "-loop","1","-t","5","-i","photo4.jpg",
  
  "-loop","1","-t","5","-i","photo5.jpg",
  
  "-filter_complex",
  
  "[1:v][0:v]blend=all_expr='A*(if(gte(T,2),1,T/2))+B*(1-(if(gte(T,3),1,T/3)))'[b1v];"
  
  + " [2:v][1:v]blend=all_expr='A*(if(gte(T,0.5),1,T/0.5))+B*(1-(if(gte(T,0.5),1,T/0.5)))'[b2v];"
  
  + " [3:v][2:v]blend=all_expr='A*(if(gte(T,0.5),1,T/0.5))+B*(1-(if(gte(T,0.5),1,T/0.5)))'[b3v];"
  
  + " [4:v][3:v]blend=all_expr='A*(if(gte(T,0.5),1,T/0.5))+B*(1-(if(gte(T,0.5),1,T/0.5)))'[b4v];"
  
  + " [0:v][b1v][1:v][b2v][2:v][b3v][3:v][b4v][4:v]concat=n=9:v=1:a=0,format=yuv420p[v]",
  
  "-map",
  
  "[v]","-i","Test.mp3","-s","1280x960","-vcodec","libx264","-crf","25","-acodec","copy",
  
  "crossfade.mp4"

• How to adjust the background music volume according to the main audio volume ?

  31 juillet 2017, par harishkumar329

  I am using the following ffmpeg "amerge" command to mix two audio files,

  ffmpeg -i voice.mp3 -i music.mp3 -filter_complex "[0:a]volume=1dB[a0];[1:a]volume=0.5[a1];[a0][a1]amerge=inputs=2[a]" -map "[a]" -strict -2 -y output.mp3

  voice.mp3 file also includes the silences in the middle of the audio, the positions of silence is completely dynamic.

  Currently, the voice volume is set as 1db and the music volume is set as 0.5. Because of this when there is no voice, the audio volume sounds low, if I increase the background music volume, it will spoil the voice clarity.

  Is there a way where the volume for the voice and music gets adjusted dynamically while mixing using "ffmpeg" or any such tool ?

  I know that it is possible by writing the code to separate silence and voice and mix individually with the music and then merge everything together, in that method getting the music flow without any jerks is difficult, also it requires a lot of coding and testing.

• Can i insert music in this application ?

  22 juin 2017, par Rem

  i’m having the text code to adjust video like this :

  // no crop:
  
  
  
  ffmpeg -y -i "input.flv" -i "Monitor.png" -filter_complex "[0:v]scale=870:536 [v1]; movie=MonitorBG.avi:loop=999,setpts=N/(FRAME_RATE*TB) [v2]; [v2][v1]overlay=shortest=1:x=422:y=9 [v3]; [v3][1:v]overlay=0:0,setdar=16/9;    [0:a]volume=3" -vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b:v 1000k -minrate 1000k -maxrate 1000k -profile:v main -level 3.1 -acodec libmp3lame -b:a 128k -ar 44100 -preset fast "output.avi"
  
  cmd
  
  
  
  
  
  //crop:
  
  
  
  ffmpeg -y -i "input.flv" -i "Monitor.png" -filter_complex "[0:v]scale=-1:720,crop=1025:510:135:113,scale=870:536 [v1]; movie=MonitorBG.avi:loop=999,setpts=N/(FRAME_RATE*TB) [v2]; [v2][v1]overlay=shortest=1:x=422:y=9 [v3]; [v3][1:v]overlay=0:0,setdar=16/9;    [0:a]volume=3" -vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b:v 1000k -minrate 1000k -maxrate 1000k -profile:v main -level 3.1 -acodec libmp3lame -b:a 128k -ar 44100 -preset fast "output.avi"
  
  cmd
  
  
  
  
  
  // the added Code in MyRenderTools v1004:
  
  
  
  ffmpeg -y -i "{input}.*" -i "Monitor.png" -filter_complex "[0:v]scale=870:536 [v1]; movie=MonitorBG.avi:loop=999,setpts=N/(FRAME_RATE*TB) [v2]; [v2][v1]overlay=shortest=1:x=422:y=9 [v3]; [v3][1:v]overlay=0:0,setdar=16/9;    [0:a]volume=3" -vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b:v 1000k -minrate 1000k -maxrate 1000k -profile:v main -level 3.1 -acodec libmp3lame -b:a 128k -ar 44100 -preset fast "{output}.avi"
  
  cmd

  is there anyway can i insert the music through the video that i adjusted ??Can anyone help me.Thank you