Recherche avancée

Sur d’autres sites (13111)

• Loop a video with ffmpeg

  4 mars 2015, par Ellebkey

  I am triying to loop a short video using ffmpeg in python, and i have the next code :

  FFMPEG_BIN = "ffplay"
  
  
  
  import subprocess as sp
  
  import os   
  
  
  
  def playVideo(video):
  
      command = [ FFMPEG_BIN,video,'-autoexit']         
  
      pipe = sp.Popen(command, stdout = sp.PIPE, bufsize=10**8, stderr = sp.PIPE)
  
      pipe.wait()
  
  
  
  def playPrincipal():
  
      command = [ FFMPEG_BIN,"videos/01-bienvenida.webm","-autoexit","-an","-loop 0"]
  
      pipe2 = sp.Popen(command, stdout = sp.PIPE, bufsize=10**8, stderr = sp.PIPE)

  but the video doesnt show on my second method, im making a body gesture recognition so the point is to show a principal video stay on a loop playPrincipal() like a background, and when I detect a position show other video in front of the first video,that part alredy works, and when the video ends the first video still playing. My second though was to make a large video and play it, but after around 1.30min the screen frezze, so the video just stop.

• How to add text to video by time use ffmpeg

  15 mars 2017, par Thanh Dao

  I create my slideshow with command :
  

  "ffmpeg" -f concat -safe 0 -i /path/to/text.txt -i /path/to/audio.mp3 -vsync vfr -pix_fmt yuv420p /path/to/output.mp4

  The contents of text.txt

  file '/path/to/img1.jpg'
  
  duration 6
  
  file '/path/to/img2.jpg'
  
  duration 6
  
  file '/path/to/img3.jpg'
  
  duration 6
  
  file '/path/to/img4.jpg'
  
  duration 6
  
  file '/path/to/img5.jpg'
  
  duration 6
  
  file '/path/to/img6.jpg'
  
  duration 6

  The video has been cretaed perfectly. Now I want to add titles for each images displayed. Example :

  • img1.jpg displayed, show title Title 1
  • img2.jpg displayed, show title Title 2
  • img3.jpg displayed, show title Title 3

  I search a lot but got any solutions. Anyone help me. I’m stuck

• DirectShow filter missing in FFMPEG

  30 mars 2021, par Jelling

  I am trying to stream system audio from Windows 10 via FFMPeg but my built-in audio output device (Realtek) does not show up when I run ffmpeg -list_devices true -f dshow -i dummy

  


  

  


  But the realtek audio device works and it also shows up as registered in Graph Studio Next, a direct show device browser :

  


  

  


  OS : Windows 10, 64 bit
FFMPEG : 4.3.2 (latest)

  


  Any ideas ?