Recherche avancée

Sur d’autres sites (4193)

• How display video on website using python

  17 mai 2020, par Kylo_Entro

  I do video processing with OpenCV and Python and I want to display it on a website.

  



  I have a website in VueJS and python backend using Flask. When a user want a video, my backend use OpenCV to generate this video and I want the user see the video on the website, but I don't know how to display the video.

  



  I check FFMPEG but I tried many tuto and I can not see the video on my web browser

  



  $ ffmpeg -re -i [INPUT] -c copy -f flv "rtmp://127.0.0.1/app/streamName live=1"
[tcp @ 0x565112abb500] Connection to tcp://127.0.0.1:1935 failed: Connection refused
[rtmp @ 0x565112acc600] Cannot open connection tcp://127.0.0.1:1935
rtmp://127.0.0.1/app/streamName live=1: Connection refused


  



  So how can I display a video on my website ? (I need that the website can be opened on external device on the same network)

  



  Thanks

  


• Why the output of the ffmpeg-python doesn't match the image shape ?

  9 novembre 2019, par Swi Jason

  I used the ffmpeg-python module to convert video to images. Specifically, I used the code provided by the official git repo of ffmpeg-python, as below

  out, _ = (
  
      ffmpeg
  
      .input(in_filename)
  
      .filter('select', 'gte(n,{})'.format(frame_num))
  
      .output('pipe:', vframes=1, format='image2', vcodec='mjpeg')
  
      .run(capture_stdout=True)
  
  )
  
  im = np.frombuffer(out, 'uint8')
  
  print(im.shape[0]/3/1080)
  
  # 924.907098765432

  The original video is of size (1920, 1080) and pix_fmt ’yuv420p’, but the outputs of the above code is not 1920.

  I have figured out by myself that the output of ffmpeg.run() is not a decoded image array, but a byte string encoded by JPEG format. To restore the image into a numpy array, simply use the cv2.imdecode() function. For example,

  im = cv2.imdecode(im, cv2.IMREAD_COLOR)

  However, I can’t use opencv on my embeded Linux system. So my question now is that, can I get numpy output from ffmpeg-python directly, without the need of converting it by opencv ?

• Heroku Python Discord music bot no sound [closed]

  15 septembre 2022, par olfis

  I just created python discord bot using youtube_dl and discord.py
I wanted to keep it live 24/7 on Heroku but there is one issue...
My bot is working good on my PC, but when I run it from Heroku bot just joins voice channel, adds songs to queue but I can't hear anything, his audio it's always off...

  


  Here's a screenshot of installe buildpacks on heroku.
Buildpakcs screenshot