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• using ffmpeg from macOS terminal for uploading youtube short from android just do nothing

  25 juin 2023, par Yogi Arif Widodo

  my component / recording is using blachole plugin on macOS.

  


  engine : 13" Macbook Pro M1 ( macOS 13.2 / Ventura )

  


  step to reproduce

  


  

  1. my output is screenRecordingAudio ( this name is custom name ).

  


  


  // screenRecordingAudio in audioMidi : 
BlackHole 16ch [mark as checked on use]
External Headphones [mark as checked on use]


  


  


  screenRecordingAudio is using on by click on right top of bar UI, click sound, click screenRecordingAudio.

  


  


  OR

  


  


  screenRecordingAudio is using on Settings ➡️ Sounds ➡️ Output ➡️ then choose screenRecordingAudio

  


  


  

  2. my input is quickTimeInput ( this name is custom name ).

  


  


  // quickTimeInput in audioMidi : 
BlackHole 16ch [mark as checked on use]


  


  

  3. then using ⌘ + shift + 5 , on option i use quickTimeInput

  


  4. i use these command to convert into mp4 and also purpose to get more small size video

  


  


  #!/bin/bash

# greet the user
function yoVideo() {
  ffmpeg -i $1.mov -c:v libx264 -preset medium -crf 23 -c:a aac -b:a 128k -movflags +faststart $1.mp4
}


  


  OR

  


  ffmpeg -i yogiarifwidodo.mov -c:v libx264 -preset medium -crf 23 -c:a aac -b:a 128k -movflags +faststart yogiarifwidodo.mp4


  


  

  5. then i move the video into my phone android.

  


  6. then when i tried to upload on youtube as short, its cannot be process to upload ( its just do nothing ) but when i upload on facebook reels its work also on instagram story its still working also for whatsapp story.

  


  


  when i didnt convert into mp4 its also happend and in any other case for example whatsapp story , its lagging to review video before upload . its happend to on instagram .
but when i force upload , the result video is good and smooth . then i re download my video its still best video and when try to upload my download video , there is no lagging in any condition.

  


  how to get ffmpeg perform into mp4 and also no lagging on editing while uploading at whatsapp story or instagram story or facebook , etc ?
by the way i dont know command ffmpeg , the code is copied from stackoverflow and i forgot where is it.

  


• ffmpeg audio property is blank in output video

  25 juin 2015, par hrs

  Here’s what I have to do,
  I want to convert two different images in different video file (ex : convert a.jpg into a.avi and b.jpg into b.avi).

  I am trying to generate video (.avi) from image file. Video file is generated successfully but I can’t see the audio properties when I right click on video and see details tab in property.

  Then I have one video file (.avi), using ffmpeg concat function, I am concating these three video files (a.avi, middle.avi which I already have, b.avi).
  After this, I am getting file output.avi but audio is not there in outout.avi file. I have middle.avi which already contains audio.

  Here’s my concat command,

  ffmpeg -i "concat:a.avi|middle.avi|b.avi" -vcodec copy 103_n4_2.avi

  I am trying to generate video (.avi) from only one image file. Video file is generated successfully but I can’t see the audio properties when I right click on video and see details tab in property.

  Here’s my command to convert image to video :

  ffmpeg -loop 1 -i bCopy.jpg -t 30 -q:v 0 -r 24 output_a.avi 

  PS : a.avi and b.avi (which I have generated from images does not contain audio) but only middle.avi contains the audio.

• Zoom video with VB.NET with ffmpeg

  16 août 2017, par Елица Велкова

  I am working on Windows Forms App in VB.NET and I have the following task : add video to application and when I click somewhere in video to zoom it and get pixels of this place by x and y.Please tell me how to do it ?

  I am reading for ffmpeg library but I do not know how to use it in the project .