Recherche avancée

Sur d’autres sites (6822)

• is there any way to change still images to video in php on windows plate form [on hold]

  13 juin 2014, par user3548569

  I have a scenario for creating a video files using different images.

  What can I do is, basically I have images and I want create a video file using PHP.

  Can any one please suggest the start up point for this ? Have done image capture from video and converting the video using Ffmpeg so I have think of Ffmpeg but, I think it will not allow to create a video.

  i need to develop a movie with more then 5 pic. If i added images , then php convert it to movies or video. is there any toll to convert images to video in php on windows ???
  thanks

• how can I get the length of an video in order to validate django form before upload can begin ?

  10 juillet 2013, par GetItDone

  I have an app running on heroku that allows users to upload videos, then I use ffmpeg to preform 3 tasks using celery and redis-to-go :

  1) Check the format and if it isn't already mp4, convert it to mp4.
  
  2) Extract a 3 minute clip, in mp4 format
  
  3) Grab an image from the video

  The problem is that I want to verify the video length before the video is uploaded and the three tasks are run since I want to make sure all videos are at least 15 minutes, and if not I want to raise a ValidationError. So when validating the form, I want to do something like this :

  def clean(self, *args, **kwargs):        
  
      data = super(ContentTypeRestrictedVideoField, self).clean(*args, **kwargs)
  
  
  
      file = data.file
  
      try:
  
          content_type = file.content_type
  
          main, extension = content_type.split('/')
  
          if content_type in self.content_types:
  
              if file._size > self.max_upload_size:
  
                  raise forms.ValidationError(_('Please keep filesize under %s. Current filesize %s') % (filesizeformat(self.max_upload_size), filesizeformat(file._size)))
  
              if VIDEO_LENGTH < MINIMUM_LENGTH:
  
                  raise forms.ValidationError(_('Please make sure video file is at least %s. Current video length %s') % (MINIMUM_LENGTH, VIDEO_LENGTH)
  
          else:
  
              raise forms.ValidationError(_('File type is not supported. File must be mov, flv, avi, mpeg, wmv, or mp4.'))
  
      except AttributeError:
  
          pass        
  
  
  
      return data

  What could I do for VIDEO_LENGTH and MINIMUM_LENGTH ? I read that ffprobe could be used for getting the duration, but it isn't available with the buildpack I am using and I am very inexperienced. I can't just validate file size because it can vary greatly depending on numerous factors. Anyone have any solution as to what I could try ? Thanks

• Can I get q value form a RTSP streaming using FFMPEG

  12 mars 2014, par poc

  I can get fps, framerate information from ffmpeg,

  But How to get Q value of the stream ?

  ffmpeg -y -t 5  -i rtsp://172.19.1.42/live.sdp -acodec copy -vcodec copy lala.avi