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• How to stream and play video using ffplay without buffering

  3 novembre 2014, par grzebyk

  I want to stream a live webcam video and display it on android device with the lowest latency possible. I am streaming video from a computer over rtsp protocol and I am able to watch the stream with 150ms latency on the second computer using ffplay -fflags nobuffer rtsp://xxx.xxx.xxx.xxx:port/test.sdp command.

  So far I have successfully compiled ffmpeg4android library. Unfortunately this library uses NDK which I am not familiar with. All I want to do is to be able to invoke the same command and display the video on the android SurfaceView.

  How can I call for such command ?

• OpenCV - Generate adaptive background for video

  17 avril 2019, par bozzmob

  I want to achieve something like this-

  Reference Video

  Say I have a video which is a vertical video(Dimension- 720x1280). I want to create a horizontal video with adaptive background like the video I’ve shown.
  I have written some code for reading and writing to a file.

  video_index = 0
  
  cap = cv2.VideoCapture(videofiles[0])
  
  
  
  # video resolution: 1920x1080 px
  
  out = cv2.VideoWriter("video.mp4v",
  
                        cv2.VideoWriter_fourcc(*'MP4V'),
  
                        30, (1920, 1080), 1)

  What is the effect of having background to the video which smudges on the sides called in opencv/ffmpeg or otherwise ?
  How do I achieve this effect using code or tools(I am open to using OSS desktop tools) ?

• Small discord bot with a set of working music commands, about 6 days ago the play function completely stopped functioning (more below)

  24 février 2021, par TheColoradoKid

  It is a small discord python bot for my server with various features, which had included music commands until they stopped out of the blue without showing any error for the problem.
It uses FFMpeg, and youtubeDl along with pytube to gather the song and store it locally to play it, I have pip updated all of these and they are definitely on the current versions as I have made sure of this online.
Any help or insight anyone could provide would be greatly appreciated. I'm sorry if the code is convoluted in the way it's written I'm still pretty new to coding and this is one of my first proper larger projects.

  


  If you need any information I'm happy to give what I can to help.

  


  Here is the code for the play command :

  


  @client.command()
async def play(ctx, *args):
    global queu
    #global autom
    if not args:
        voice = get(client.voice_clients, guild=ctx.guild)
        if not voice.is_playing():
            server = ctx.message.guild
            voice_channel = server.voice_client
            if queu:
                async with ctx.typing():
                    player = await YTDLSource.from_url(queu[0], loop=client.loop)
                    voice_channel.play(player, after=lambda e: print('Player error: %s' % e) if e else None)

                await ctx.send('**Now playing:** {}'.format(player.title))
                del(queu[0])
                # while autom == True:
                #     try:
                #         a = client.get_command('auto')
                #         await ctx.invoke(a)
                #     except:
                #         print('')
            elif not queu:
                await ctx.send("You can't play if there isn't anything in the queue\nIf auto mode was on it has now been disabled, to use it gain please add to the queue and run ``;auto on``")
                autom = False
    if args:
        global gueu
        search_keywords = ""
        print(args)
        for word in args:
            search_keywords += word
            search_keywords += '+'
        link = "https://www.youtube.com/results?search_query="
        link += search_keywords
        #print(link)
        html = urllib.request.urlopen(link)
        video_ids = re.findall(r"watch\?v=(\S{11})", html.read().decode())
        url = ("https://www.youtube.com/watch?v=" + video_ids[0])
        #print(url)
        queu.append(url)
        #print(queu)
        await ctx.send("``{}`` added to queue!\n If the song doesn't start please either let the current song end and run ``;play``/``;next`` again or run ``;next`` to play now".format(url))
        try:
            p = client.get_command('play')
            await ctx.invoke(p)
        except:
            print('failed')