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• Streaming rtsp data to local mp4 file

  11 juillet 2017, par Pankhuri Agarwal

  How can I save live streaming data from a local camera transported by rtsp to my local memory in a .mp4 format.

  I am using Ubuntu 16.04 LTS and tried using ffmpeg 3.3 but nothing seemed to work properly.

  The goal will be to provide live feed by mp4 by html5 and perform some modification on mp4 data.

  Can anyone suggest how to make ffmpeg work or any other way ?

• How to save youtube audio url (m4a/webm) as mp3 Using php ? [closed]

  7 janvier 2020, par Mwt Lakshan

  How to save youtube audio url (m4a/webm) as mp3 using php ?

  example Url :

  https://r2---sn-i0ujipnvoa3-jhce.googlevideo.com/videoplayback?expire=1578399021&ei=zSAUXuSdB4KF6dsPzNGDyAM&ip=2.59.21.100&id=o-AKoE21DucyryFuMknp7oovg7sriugDO95Y6DV5E_ewYI&itag=251&source=youtube&requiressl=yes&mime=audio%2Fwebm&gir=yes&clen=3087360&dur=170.781&lmt=1578224519515749&fvip=5&keepalive=yes&fexp=23842630&c=WEB&txp=5531432&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&s=o%3DAJ25zxswXZhCv-jK_5n7tA1AcJHx9fUzcAJxz1F4kepBiAc98%3D_E2jlms3LFtk5U-CNgLq4eG4Ocd0at8Oi19UC1PAhIQRww2IxgLAD&sp=sig&title=+Full+Video_+Habibi+ke+Nain++DABANGG+3++Salman+Khan%2C+Sonakshi+S+_+Shreya%2C+Jubin+_Sajid+Wajid+&ratebypass=yes&sig=ALgxI2wwRQIhAP1CU91iO8ta0dcO4Ge4qLgNC-U5DtFL3smlj2E_o89cAiBpek4F1zxJkczUf9xHJcA1At7n5_Kj-vChZXwsxz52JA%3D%3D&cms_redirect=yes&mip=45.121.88.125&mm=31&mn=sn-i0ujipnvoa3-jhce&ms=au&mt=1578377583&mv=m&mvi=1&pl=24&lsparams=mip,mm,mn,ms,mv,mvi,pl&lsig=AHylml4wRgIhAKeVFZYOk3JQ1Owlx-y1jaBfS1_NJBm6ZMlcfaSAvoN0AiEArzcj5cDCAJ_YtjQu4mpomJsFaBjM8Uk14bZlzVu

• openCV save frames from RTSP non blocking

  1er janvier 2020, par Jacob nighFor

  I am building an app that records frames from IP camera through RTSP.

  My engine is in charge to save a video in mp4 with Opencv VideoWriter working well.
  What I am looking for is to create a startRecord and a stopRecord class method that will respectively start and stop recording according to a trigger (it could be an argument that I pass to the thread).
  Is anyone know what the best way to do that kind of stuff ?

  Here is my class :

  from threading import Thread
  
  import cv2
  
  import time
  
  import multiprocessing
  
  import threading
  
  class RTSPVideoWriterObject(object):
  
      def __init__(self, src=0):
  
          # Create a VideoCapture object
  
          self.capture = cv2.VideoCapture(src)
  
  
  
          # Start the thread to read frames from the video stream
  
          self.thread = Thread(target=self.update, args=())
  
          self.thread.daemon = True
  
          self.thread.start()
  
  
  
      def update(self):
  
          # Read the next frame from the stream in a different thread
  
          while True:
  
              if self.capture.isOpened():
  
                  (self.status, self.frame) = self.capture.read()
  
  
  
      def endRecord(self):
  
          self.capture.release()
  
          self.output_video.release()
  
          exit(1)
  
  
  
      def startRecord(self,endRec):
  
  
  
          self.frame_width = int(self.capture.get(3))
  
          self.frame_height = int(self.capture.get(4))
  
          self.codec = cv2.VideoWriter_fourcc(*'mp4v')
  
          self.output_video = cv2.VideoWriter('fileOutput.mp4', self.codec, 30, (self.frame_width, self.frame_height))
  
          while True:          
  
              try:
  
                  self.output_video.write(self.frame)
  
                  if endRec:
  
                      self.endRecord()
  
              except AttributeError:
  
                  pass
  
  
  
  
  
  
  
  
  
  if __name__ == '__main__':
  
  
  
      rtsp_stream_link = 'rtsp://foo:192.5545....'
  
      video_stream_widget = RTSPVideoWriterObject(rtsp_stream_link)
  
  
  
      stop_threads = False
  
      t1 = threading.Thread(target = video_stream_widget.startRecord, args =[stop_threads]) 
  
      t1.start() 
  
      time.sleep(15)
  
      stop_threads = True

  As you can see in the main I reading frames and store them in a separate thread. Then I am starting to record (record method is with an infinite loop so blocking) and then after 15 sec, I am trying to pass a ’stop_record’ argument to stop recording properly.

  A part of the code comes from Storing RTSP stream as video file with OpenCV VideoWriter

  Is someone have an idea ?
  I read a lot that OpenCV can be very tricky for multithreading

  N.