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• Ubuntu Server 16.10 - run ffmpeg on startup in background

  12 février 2017, par Greg

  i’m trying to find information about starting a background script that should run ffmpeg streaming in the background.

  I need to have this script started as soon as everything else in Ubuntu Server has started but i find that i should use /etc/rc.local which is not present in my newly installed system.

  Can you give me a hint here ?

  The script i want to run (and keep running as long as the server is working) is as follows :

  #! /bin/bash
  
  
  
  USTREAM_URL="rtmp://xxxx.xxx.xxx"
  
  
  
  SOURCE="rtsp://xxx.xxx.xxx"
  
  KEY="mykey"
  
  
  
  while :
  
  do
  
  
  
  ffmpeg \
  
      -v 16 -i "$SOURCE" \
  
      -an -pix_fmt yuv420p \
  
      -threads 2 -qmax 15 \
  
      -f flv "$USTREAM_URL/$KEY flashver=FMLE/3.0\20(compatible;\20FMSc/1.0) live=true"
  
  
  
  sleep 5
  
  done

• Can't get FFMPEG to convert Samsung Motion Photos from .jpg to .mp4 [closed]

  27 août 2024, par welbeebee

  I pulled a bunch of Samsung Galaxy S21 Ultra motion photos to my PC (Windows 11) for video editing, but they were in .jpg, and for some reason Microsoft Clipchamp couldn't convert them to video. But, I knew the motion photos were intact, bc Microsoft Photos was showing the MOTION option and playing the videos just fine.
So, I'm in FFMPEG just throwing everything at the wall, but can only get still MP4's out of it, with none of the video.

  


  Here's the breakdown of what I'm looking at for :
ffmpeg -i input.jpg

  


  Input #0, image2, from '20240623_233601.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 874324 kb/s
  Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 2944x2208 [SAR 59:59 DAR 4:3], 25 fps, 25 tbr, 25 tbn


  


  So to get the whole folder converted, I'm trying :
for %i in (*.jpg) do ffmpeg -i "%i" -c:v libx264 -map 0:0 -preset veryslow -crf 18 "%~ni.mp4"

  


  But this just results in a bunch of those still MP4's I mentioned.

  


  I'm assuming the problem starts with that odd duration of 00:00:00.04, with a bitrate of 874324 kb/s, but I'm not sure. I don't understand this mjpeg video format very well at all.

  


  I been trying to work through this with copilot to no success, and so I'm turning to stackoverflow in case anyone can help me out.
Or am I going about this all the wrong way ? Let me know.

  


• If I kill ffmpeg command its video lenght is 5 seconds shorter then the actual length ?

  7 mai 2014, par Sumit Jasuja

  I am using ffmpeg to capture screen. output is in mp4 format. when I kill ffmpeg command its video length is 5 seconds shorter then the actual length.

  Process killed using following code :

   foreach (Process pr in Process.GetProcessesByName("ffmpeg"))
  
   {
  
      pr.Kill();
  
   }