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• ffmpeg adds silence when used with input text file

  1er octobre 2022, par AncientToaster

  I'm using ffmpeg's concat option to combine a series of still images with an mp3 file. The total duration of my input.txt file is 12532 seconds, which is exactly the same as the total duration of my mp3 file (3:28:52, or 12532 seconds).

  


  But ffmpeg is adding 200 seconds of audio-free content to the end of the video. I've tried totaling and re-totaling the total duration of input.txt and it all seems to add up to the same amount. Including or excluding the -shortest flag also doesn't seem to matter.

  


  


  • ffmpeg command :

    


    ffmpeg -f concat -i input.txt -i input.mp3 -shortest -c:v libx264 -r 1 -pix_fmt yuv420p output.mp4


    


  


  • input.txt source

    


  


  • input.mp3

    


  


  • output file

    


  


  


  I'm having the same issue (differing amounts of time) with other videos.

  


• How to fix the problem of wrong colors shown in the local video window of MicroSIP ?

  25 juillet 2022, par Yadid

  I'm developing a project which is a customization based on MicroSIP in Windows. The local video window performs the video stream from Screen Capture Recorder, which is as a virtual camera and captures the screen. And the problem is the colors of the picture of the local video window are not correct. The picture I uploaded is the example of the problem, it seems like that the red and the blue are exchanged.

  
I'd tried to upgrade the FFmpeg to 5.0.1 and the SDL to 2.0.22, both are probably the latest versions, but it doesn't fix the color problem.

  
This problem also occurs when using the latest official version of MicroSIP(3.21.2).
  
source code of MicroSIP
  
source code of PJSIP (the low-level module which provides interfaces for video, audio, etc. Maybe it's the origin of the color problem)
  
And while using some of the other software which can display pictures of the virtual camera, they can show pictures fine with the correct colors, e.g. MyCam.

  
How to fix this problem ? Or which parts can I do some research on about this problem ? Any help would be appreciated.

  


• ffmpeg adds 200 seconds of silence

  1er octobre 2022, par AncientToaster

  I'm using ffmpeg's concat option to combine a series of still images with an mp3 file. The total duration of my input.txt file is 12532 seconds, which is exactly the same as the total duration of my mp3 file (3:28:52, or 12532 seconds).

  


  But ffmpeg is adding 200 seconds of audio-free content to the end of the video. I've tried totaling and re-totaling the total duration of input.txt and it all seems to add up to the same amount. Including or excluding the -shortest flag also doesn't seem to matter.

  


  


  • ffmpeg command :

    


    ffmpeg -f concat -i input.txt -i input.mp3 -shortest -c:v libx264 -r 1 -pix_fmt yuv420p output.mp4


    


  


  • input.txt source

    


  


  • input.mp3

    


  


  • output file