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• ffmpeg convert any user video file to run on mobiles h264 mp4

  24 octobre 2014, par tobros91

  So, i have kind of accepted this task on work but im really not sure if its possible.

  We are going to build a website where users can upload videos from their computers and mobile phone browsers. The video files can be a large range of aspect ratios, width, height, codex and file formats.

  I will have access to ffmpeg from php exec command on a web server.

  Is it possible to use this to convert the user files to one file format that works on computers, android and iphone.

  The requirements is that we can set a max width, to witch the video will be scaled, dynamically to match height.

  Does anyone know is this can be done, and be done in a reasonable amount of time. Will do project on 2 days. And if so some pointers in the right direction would be nice.

• Converting mp4 AAC to AVC using Python

  12 janvier 2020, par zion.b.

  i am using ffmpeg to convert video format. I have a video in mp4 aac and want to convert it to mp4 avc. I successfully(!!!) used ffmpeg to covert image to avi/mkv/even copy of the mp4 but nothing gives me what i desire.

  The idea is to have a video file format that will run on mostly all mobile devices such as mp4 avc.
  

  My python code :
  

  import subprocess #need to install ffmpegin terminal/cmd
  
  
  
  def convert_video(video_input, video_output):
  
      cmds = ['ffmpeg', '-i', video_input, video_output]
  
      subprocess.Popen(cmds)
  
  
  
  
  
  convert_video("videoName.mp4", "videoNameCopy.mp4")

• Concat video with different sizes and config with ffmpeg

  31 juillet 2022, par Abrar

  I am building a mobile app where I am using ffmpeg to process videos.

  


  Users can choose multiple videos and they need to be merged together creating a final video.

  


  The problem is their selected videos can have different dimensions and configurations.

  


  So, when I tried concat demuxer, it produces weird results with impossible length and no data.

  


  concat protocol with intermediate ts file, seems to work but the resolution and size is stretched.

  


  So, what I want to do is this -

  


  


  1. Re encode every video to a specific resolution, 1080:1920 or 9/16. The video should not be stretched, instead black borders will be added on sides to make it that size.

     


  


  2. Once every video is re encoded and have the same config, concat them.

     


  


  


  How can I do this ?