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• run ffmpeg commands from my own project

  28 octobre 2013, par bruno

  I'm starting a project where I want ppl to upload videos of a talk and a the video of slides for that talk and want to merge them (to play at the same time) and then show results.

  My question is :
  Is it possible to do that from code ? if it is, can you point me to the right doc ?
  I was able to do it running command line, but as I want this to run on a server with different ppl uploading their videos I think this would not be the best approach.
  I have a preference for Java if it's possible to do it, but I can manage to use other languages what do you guys suggest ?

  The idea would be to have a service where I can point the urls of the videos stored in my server and it would merge them and save file where I can later stream. With different ppl uploading videos at the same time and being able to watch the result in a reasonable amount of time.

  I used this tutorial to test :
  https://trac.ffmpeg.org/wiki/Create%20a%20mosaic%20out%20of%20several%20input%20videos

  Thanks for your time

• Converting a large number of MP3 files to videos for YouTube, each using same the JPEG image

  25 juin 2020, par David

  I am looking for a way to convert large number of MP3 files to videos, each using the same image. Efficient processing time is important.

  


  I tried the following :

  


  ffmpeg -i image.jpg -i audio.mp3 -vcodec libx264 video.mp4


  


  VLC media player played the resulting video file with the correct sound, but a blank screen.

  


  Microsoft Media Player played the sound and showed the intended image. I uploaded the video to YouTube and received the message :

  


  


  "The video has failed to process. Please make sure you are uploading a supported file type."

  


  


  How can I make this work ?

  


• ffmpeg : "invalid syntax" on file name ?

  26 novembre 2017, par Josh Flori

  I am trying to use this line of code in python :

  ffmpeg -i test.mp4 -vf fps=1 out%d.png

  per the documentation here https://trac.ffmpeg.org/wiki/Create%20a%20thumbnail%20image%20every%20X%20seconds%20of%20the%20video

  but python is giving me :

  File "<stdin>", line 1
  
  ffmpeg -i test.mp4 -vf fps=10 out%d.png
  
               ^
  
  SyntaxError: invalid syntax
  
  </stdin>

  I have imported ffmpeg and have my test.mp4 file exactly where I keep everything else python related. I have looked for a good while and am not sure what I am doing wrong, seems like it should be something simple ? Any ideas ?

  Thanks