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• Incorporating ffmpeg in a bash script

  12 septembre 2014, par Voprosnik

  I have a very large audio mp4 file that contains several songs.

  I have generated a script which reads a text file with the times and the song names and successfully assigns starttime, endtime and songtitle in 3 variables. The script successfully echoes the variables and returns the following format :

  00:00:00 00:10:15 Song1
  
  00:10:15 00:14:20 Song2

  and so on...

  Now I am intending to use this script with ffmpeg and crop each part of the big file into smaller audio files.

  The script thus, after feeding the variables in a while loop, it reaches to the command

  ffmpeg -ss $START -t $END -i ${1} -acodec copy $SONGNAME.mp4

  Once I run the script, the first two songs are cropped, but then the whole process stops with

  Press [q] to stop, [?] for help
  
  error parsing debug value
  
  debug=0

  I checked the generated files and they play ok, but there is no way for me to know why the script stopped there and did no proceed to the rest of the file (considering that when in the script I replace ffmpeg with echo, the script echoes the variables flawlessly).

  In other words I don’t know if there is a problem in my script, ffmpeg, or the source music file.

• Incorporating ffmpeg in a bash script

  22 novembre 2017, par Voprosnik

  I have a very large audio mp4 file that contains several songs.

  I have generated a script which reads a text file with the times and the song names and successfully assigns starttime, endtime and songtitle in 3 variables. The script successfully echoes the variables and returns the following format :

  00:00:00 00:10:15 Song1
  
  00:10:15 00:14:20 Song2

  and so on...

  Now I am intending to use this script with ffmpeg and crop each part of the big file into smaller audio files.

  The script thus, after feeding the variables in a while loop, it reaches to the command

  ffmpeg -ss $START -t $END -i ${1} -acodec copy $SONGNAME.mp4

  Once I run the script, the first two songs are cropped, but then the whole process stops with

  Press [q] to stop, [?] for help
  
  error parsing debug value
  
  debug=0

  I checked the generated files and they play ok, but there is no way for me to know why the script stopped there and did no proceed to the rest of the file (considering that when in the script I replace ffmpeg with echo, the script echoes the variables flawlessly).

  In other words I don’t know if there is a problem in my script, ffmpeg, or the source music file.

• ffmpg full album video - multiple audio files one after another

  21 août 2019, par Martin

  I am trying to write an ffmpeg command which will take an image (jpg) and multiple audio files (in this case, lets say 3 mp3 files) and create an mp4 video where each audio file comes one after another (first audio file, then second, then third, etc... no overlap, files play in order one after another).

  I am currently using this command to export a single mp3 file and jpg into an mp4 :

  ffmpeg -loop 1 -y -i "media/pic.jpg" -i "media/01 song name.mp3" -shortest -acodec copy -vcodec mjpeg -s 1920x1080 "outputVideo.mp4"

  Is it possible to combine multiple audio tracks into the video using one command ?

  In the past I was using this command seperately to generate a single audio track made up of multiple audio inputs in order :

   ffmpeg -i '01 - Funky Carla.mp3' -i '02 - Take This Day Away.mp3' -i '03 - Youre The One I Love.mp3' -filter_complex '[0:0][1:0][2:0]concat=n=3:v=0:a=1[out]' -map '[out]' -b:a 320k fullAudio.mp3

  And then just using that track to export one video, but this process takes two separate ffmpeg commands, is long and slow, and produced a huge video file.

  Should I use something like amix / amerge / map ? Any advice/ideas is appreciated, thanks.