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• Merge (video and audio) with (background music) with ffmpeg

  9 mars 2021, par Sudesh

  I have video file input.mp4 that contain video and two audio source - speaking, and music.mp3 that contain background music. Now, I want to merge them.

  


  Here is the command that i use :

  


  ffmpeg -i input.mp4 -i music.mp3 -c:v copy -filter_complex "[0:a]aformat = fltp:44100:stereo,apad[0a];[1] aformat=fltp:44100:stereo,volume=1.5[1a];[0a] [1a] amerge[a]" -map 0:v -map "[a]" -ac 2 -y -shortest output.mp4


  


  input file
https://d9f35555a8b3e9044c8d-95c21efaab8093d23d4124e599a618ee.ssl.cf5.rackcdn.com/mub_audio/1e03dc67-5079-46d5-b692-d69bbb6ee3e3.mp4

  


  audio file
https://d9f35555a8b3e9044c8d-95c21efaab8093d23d4124e599a618ee.ssl.cf5.rackcdn.com/mub_audio/a6cab88a63eb11eb8d8b901b0efa6f1d.mp3

  


  you can check the output file here
https://d9f35555a8b3e9044c8d-95c21efaab8093d23d4124e599a618ee.ssl.cf5.rackcdn.com/mub_audio/6e6e79ef-a732-49d9-8317-4ba97c05a352.mp4

  


  The input file has a pause after every sentence. But in output, that pause duration doesn't have any background music.
What can be the reason ? what is the solution for it ?

  


• avformat/pp_bnk : treat music files as stereo

  13 novembre 2020, par Zane van Iperen

  avformat/pp_bnk : treat music files as stereo
  These files are technically a series of planar mono tracks.
  
  If the "music" flag is set, merge the packets from the two
  
  mono tracks, essentially replicating :
    [0:a:0][0:a:1]join=inputs=2:channel_layout=stereo[a]
  Signed-off-by : Zane van Iperen <zane@zanevaniperen.com>
  

  • [DH] libavformat/pp_bnk.c

• Bash : Create copy of music files in different format and folder

  13 mai 2021, par Brett Sjoholm

  I'm trying to create a bash scipt to simply automate finding my flac files and creating an alac copy of them in a separate folder. Just so I have my little itunes folder. Want to automate because so many.

  


  So I find my flac folders within my Eminem folder....

  


  :~$ find /mnt/music/Eminem -type d -name *FLAC
    /mnt/music/Eminem/2009 Relapse FLAC
    /mnt/music/Eminem/1996 Infinite FLAC
    /mnt/music/Eminem/1999 The Slim Shady LP FLAC
    /mnt/music/Eminem/2000 Marshall Mathers LP FLAC


  


  Now instead of going into each folder and converting manually using something like

  


      ffmpeg -i track.flac -acodec alac track.m4a...


  


  How do I, within a bash script, take these multiple folders. Create an ALAC copy of the contents in /mnt/music/iTunes using FFMpeg ?

  


  New folder will be...

  


  /mnt/music/iTunes/Eminem/2009 Relapse ALAC/track.m4a


  


  All flac folders have FLAC at the end in the same folder structure.

  


  /mnt/music/Artist/Year Album FLAC


  


  I understand most of the locating, copying, converting, manually terminal command stuff but when it comes to putting it into a bash script. I don't understand how I take the output of each command and use it for another. The list of folder for example. Don't know how to automate doing all the steps for each.

  


  Kind of long winded but any help will be much appreciated. Even some videos you recommend for learning.