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• ffmpeg : How to concat audio files and add background music in a single command ?

  7 décembre 2016, par harishkumar329

  Need to concat audio files and add background music in a single command.

  Right now I use the following commands to do so,

  To concat :

  ffmpeg -i 1.mp4 -i 2.mp4 -i 3.mp4 -i 4.mp4 -i 5.mp4 -i 6.mp4 -i 7.mp4 -i 8.mp4 -i 9.mp4 -i 10.mp4  -filter_complex '[0:0][1:0]concat=n=10:v=0:a=1[out]'  -map '[out]' -strict -2 -y 10_final.mp4

  To add background music :

  ffmpeg -i 10_final.mp4 -i music.mp4 -filter_complex "[0:a]volume=1dB[a0];[1:a]volume=0.5[a1];[a0][a1]amerge=inputs=2[a]" -map "[a]" -ac 1 -ab 32000 -ar 22050 -strict -2 -y 10_with_music.mp4

  But his process is a quite time-consuming process as every time the file read/write happening to the output.

  Is there a way I can merge these two above commands to a single so that the command should be optimized.

• ffmpeg : How to concat audio files and add background music in a single command ?

  1er mai 2018, par harishkumar329

  Need to concat audio files and add background music in a single command.

  Right now I use the following commands to do so,

  To concat :

  ffmpeg -i 1.mp4 -i 2.mp4 -i 3.mp4 -i 4.mp4 -i 5.mp4 -i 6.mp4 -i 7.mp4 -i 8.mp4 -i 9.mp4 -i 10.mp4  -filter_complex '[0:0][1:0]concat=n=10:v=0:a=1[out]'  -map '[out]' -strict -2 -y 10_final.mp4

  To add background music :

  ffmpeg -i 10_final.mp4 -i music.mp4 -filter_complex "[0:a]volume=1dB[a0];[1:a]volume=0.5[a1];[a0][a1]amerge=inputs=2[a]" -map "[a]" -ac 1 -ab 32000 -ar 22050 -strict -2 -y 10_with_music.mp4

  But his process is a quite time-consuming process as every time the file read/write happening to the output.

  Is there a way I can merge these two above commands to a single so that the command should be optimized.

• Display two videos together then output as a merged video on a single screen

  15 décembre 2014, par Anil

  This question may sound a little bit complex or ambiguous, but I’ll try to make it as clear as I can. I have done lots of Googling and spent lots of time but didn’t find anything relevant for windows.

  I want to play two videos on a single screen. One as full screen in background and one on top of it in a small window or small width/height in the right corner. Then I want an output which consists of both videos playing together on a single screen.

  So basically one video overlays another and then I want that streamed as output so the user can play that stream later.

  I am not asking you to write the whole code, just tell me what to do or how to do it or which tool or third party SDK I have to use to make it happen.

  update :
  Tried a lots of solution.

  1.Xuggler- doesn’t support Android.

  2.JavaCV or JJMPEG- not able to find any tutorial which suggested how to do it ?

  Now looking for FFMPEG- searched for a long time but not able to find any tutorial which suggest the coding way to do it. I found command line way to how to fix it.
  So can anyone suggest or point the tutorial of FFMPEG or tell any other way to