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• How to create a 720x480 blank mpg

  6 août 2019, par wckai

  In order to join some video clip(720x480 [SAR 8:9 DAR 4:3]) and leave two seconds blank gap between each one, i try to make an blank clip by code

  ffmpeg -t 2 -s 720x480 -f rawvideo -pix_fmt rgb24 -r 29.97 -i /dev/zero -f lavfi -i anullsrc -shortest empty_720x480.mpg

  but when i try to concat clips,

  -filter_complex "[0:v:0]setsar=8/9[v0];[1:v:0][1:a:0][v0][0:a:0][2:v:0][2:a:0][v0][0:a:0][3:v:0][3:a:0]concat=n=5:v=1:a=1[outv][outa]"

  an error occurs

  Input link in3:v0 parameters (size 720x480, SAR 1:1) do not match the corresponding output link in0:v0 parameters (720x480, SAR 8:9)

  I have try create an 720x540 first and scale to 720x480(), but still not the same with 720x480 [SAR 200:219 DAR 100:73].

  I have no idel how to solve it, please help.

• How to get continuously 10 second video while recording ? [on hold]

  27 mai 2014, par Mehul Ranpara

  I want to upload video using live stream or particular duration video to server. So far i checked the some links which gives me information regarding rtmp server configuration but not able to know what actually we have to configure rtmp for live streaming.

  Alternate option i thought is that get 10-15 second record and upload that video while recording so, that from server end we can merge that part into one using FFMPEG.

  But, i didn’t get any information that how to get every 10 sec video while recording ?

  I used this link as a demo for live stream video upload : Link

• How to run a python code via Django templates ?

  18 novembre 2018, par Iskender Berdiev

  I want to execute code below when the is submitted (project on Django) :

  from os import system, listdir, remove
  
  link = 'https://www.youtube.com/watch?v=ME9yO1KEVoo'
  
  
  
  def download(): ## Downloading a video from YouTube using youtube-dl
  
      system("youtube-dl -o download {}".format(link))
  
  
  
  def convert():  ## Converting downloaded video to mp3 format via ffmpeg.exe(same directory)
  
      listOfFiles = listdir('.')
  
      for i in listOfFiles:
  
          if i.startswith("download"):
  
              name = i
  
              system("ffmpeg -i {} download.mp3".format(name))
  
  
  
  def main():
  
      download()
  
      convert()
  
  
  
  main()

  I have tried to put this code into views.py :

  class download(TemplateView):
  
      def main(request):
  
          if request.method == 'POST':
  
              link = 'https://www.youtube.com/watch?v=ME9yO1KEVoo'
  
              system("youtube-dl -o download {}".format(link))
  
              listOfFiles = listdir('.')
  
              for i in listOfFiles:
  
                  if i.startswith("download"):
  
                      name = i
  
                      system("ffmpeg -i {} download.mp3".format(name))
  
          return redirect ('loader/wait.html')

  urls.py :

  path('wait/', views.download.as_view(), name='wait')

  and the html form which is submitted to run views.download.as_view() :

  <form action="{% url " method="POST">{% csrf_token %}
  
  <input type="submit" value="Yes" />
  
  </form>