Sur d’autres sites (6778)

• How can I run an ffmpeg command in a python script ?

  24 juin 2022, par Nexion21

  I want to overlay a transparent video over top of an image using ffmpeg and python

  


  I am able to do this successfully through terminal, but I cannot get ffmpeg commands to work in python. The following command produces the result that I want in terminal when I am in the directory with the files there.

  


  ffmpeg -i head1.png -i hdmiSpitting.mov -filter_complex "[0:v][1:v] overlay=0:0" -pix_fmt yuv420p -:a copy output3.mov


  


  In python, my code is simple :

  


  import os
import subprocess
command = "ffmpeg -i head1.png -i hdmiSpitting.mov -filter_complex \"[0:v][1:v] overlay=0:0\" -pix_fmt yuv420p -c:a copy output3.mov"
subprocess.call(command,shell=True)


  


  The code runs, there is no indication of an error, but no output is produced.

  


  What am I missing here ?

  


• Subprocess not working when called in atom

  22 août 2019, par jan1892

  I am running python3.6 in Atom using the package ’script’ on Ubuntu 18.04.

  I am trying to cut videos using ffpb (basically ffmpeg with a progress bar instead of verbose).

  The following code gives the error : ’FileNotFoundError : [Errno 2] No such file or directory : ’ffpb’ : ’ffpb’

  import subprocess
  
  
  
  cmds = ['ffpb', '-i', 'input.mp4', 'output.mp4']
  
  subprocess.call(cmds)

  • The command ’ffpb -i input.mp4 output.mp4’ works in the terminal
  • The script works when I call it with python3 in the terminal
  • The script works in atom if I replace ffpb by ffmpeg
  • I installed ffpb using pip3 install —user ffpb
  • I never had problems like this running code in atom before.

  Thanks in advance for any help.

• linux ffmpeg Live streaming cannot connect to another PC

  9 juin 2019, par Tae-Yeong

  I’m set ffserver and ffmpeg streaming code in the linux console terminal.

  ffserver => ffserver -f ./ffserver.conf (terminal 1)

  ffmpeg => ffmpeg -r 15 -s 640x480 -f video4linux2 -i /dev/video0 http://mylocalhostip:8090/feed1.ffm (terminal 2)

  It was working success in the localhost.
  But It could not connect other PC or Mobile.
  Firewall set disable.

  My desktop and mobile have a normal Internet connection.

  I want to Live-Streaming connect other PC or Mobile.
  How can I do ?

  Hardware = LattePanda
  OS = Ubuntu 16.04

  < ffserver.conf >

  HTTPPort 8090

  bind to all IPs aliased or not

  HTTPBindAddress 0.0.0.0

  max number of simultaneous clients

  MaxClients 1000

  max bandwidth per-client (kb/s)

  MaxBandwidth 10000

  Suppress that if you want to launch ffserver as a daemon.

  NoDaemon

      <feed>
  
      File /tmp/feed1.ffm
  
      FileMaxSize 100M
  
      </feed>
  
      <stream>
  
      Feed feed1.ffm
  
      Format swf
  
      VideoCodec flv
  
      VideoFrameRate 15
  
      VideoBufferSize 80000
  
      VideoBitRate 100
  
      VideoQMin 1
  
      VideoQMax 5
  
      VideoSize 640x480
  
      PreRoll 0
  
      Noaudio
  
      </stream>
  
      <stream>
  
      Format status
  
      ACL allow localhost
  
      ACL allow 121.172.0.0 121.172.0.255 (my desktop Ip range)
  
      </stream>

  I expect to output of My WebCam Screen, but the actual output timeout.

  My desktop OS is Window10. And Mobile OS is Android.