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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 ?

  


• As music files in a folder, convert them from .ogg to .mp3 (pytnon)

  19 novembre 2020, par Yaroslav Ko

  There is a folder with music files how to convert them from .ogg to .mp3

  


  I know there is a way to convert to ffmpeg

  


  How to do this in Python 3 so that it converts all files from a folder (test_music/01.ogg,02.ogg, ...09.ogg)

  


• avfilter/vf_amplify : improve performance

  27 février 2022, par Paul B Mahol

  avfilter/vf_amplify : improve performance
  

  • [DH] libavfilter/vf_amplify.c