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• Streaming opencv to youtube with ffmpeg

  29 juin 2020, par Tim Treurniet

  I am trying to live stream to youtube from a c++ opencv project. Currently, my program outputs a RTMP stream which nginx should push to youtube. A problem I'm having is youtube's requirement for an audio stream.

  


  I'm trying a workaround by restreaming using ffmpeg. It adds an empty audio stream (not efficient). Another issue is the output speed of my program which is around 10 fps. When playing in vlc or youtube, the stream buffers for a while and plays a few seconds of smooth video. How should I set this up in c++ to play a constant stream with lower fps, including an empty audio stream ?
Example I used : https://github.com/andreanobile/opencv_ffmpeg_streaming

  


  FFMPEG for adding audio :
ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -hwaccel cuvid -i rtmp ://localhost/live -vf scale=3840:2160 -c:v h264_nvenc -preset fast -maxrate 6000k -pix_fmt yuv420p -g 50 -b:a 160k -ac 2 -c:a aac -f flv rtmp ://a.rtmp.youtube.com/live2/

  


• discord.py music bot can't play next song

  6 décembre 2020, par bork

  I'm making a discord music bot using ffmpeg and youtube-dl. I have a premade playlist of urls that would play the list of songs once a user chooses it.
  
this is my code for playing the audio

  


  ydl_opts = {
            'format': 'bestaudio', 
            'noplaylist':'True',
            'youtube_include_dash_manifest': False
            }
FFMPEG_OPTIONS = {
            'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5',
            'options': '-vn'
            }

songs = url[playlist]
dur_min = 0
pre_dur_sec = 0
with YoutubeDL(ydl_opts) as ydl:
    for i in songs:
        info = ydl.extract_info(i, download = False)
        dur = info['duration']
        playlist_songs.append(info)

playlist_songs_copy = playlist_songs.copy()
for i in playlist_songs_copy:
    info = playlist_songs.pop(0)
    URL = info['formats'][0]['url']
    player = FFmpegPCMAudio(URL, **FFMPEG_OPTIONS)
    q.append(player)
    q_playlist.append(playlist)

if not voice.is_playing():
    source = q.pop(0)  
    playlist = q_playlist.pop(0)
    dur_min = duration_min.pop(0)
    dur_sec = duration_sec.pop(0)  
    voice.play(source, after = lambda e: play_next(ctx, source))      
    voice.is_playing()
    await ctx.send(f'```nim\n*Now Playing:*\nplaylist {playlist}: {name[playlist]}\n\n{content[playlist]}\n\ntotal duration: {dur_min}:{dur_sec}```')


  


  and this is my code for playing the next song

  


  def play_next(ctx, source):
    voice = get(client.voice_clients, guild = ctx.guild)
    if len(q) >= 1:
        try:
            del combine_q[0]
            source = q.pop(0)
            playlist = q_playlist.pop(0)
            dur_min = duration_min.pop(0)
            dur_sec = duration_sec.pop(0)

        except:
            pass

        voice.play(source, after = lambda e: play_next(ctx, source))
        try:
            asyncio.run_coroutine_threadsafe(ctx.send(f'```nim\n*Now Playing:*\nplaylist {playlist}: {name[playlist]}\n\n{content[playlist]}\n\ntotal duration: {dur_min}:{dur_sec}```'), client.loop)
        
        except:
            asyncio.run_coroutine_threadsafe(ctx.send('```nim\nPlaying the next song...```'), client.loop)
        
    else:
        time.sleep(30) 
        if not voice.is_playing():
            asyncio.run_coroutine_threadsafe(voice.disconnect(), client.loop)
            asyncio.run_coroutine_threadsafe(ctx.send("```nim\nNo more songs in queue.```"),client.loop)
            voice.is_paused()


  


  Up till today, it's been working fine. But I was using the bot just now and instead of playing the song and sending the message "Playing the next song..." as usual, it just stopped and spammed the message for about 30 times before it disconnected. When I checked the logs, it showed
socket.send() raised exception
, which was also spammed in the terminal. When I tried making the bot reconnect, it joined my voice channel but didn't respond to any commands and would keep making the discord "connecting" noise. It wouldn't even leave with my .leave command unless I completely turned it off via the script.

  


  The same connecting problem would continue even after I reran the script and would only stop after I restarted my VS Code which is really odd...

  


  After some testing I found out that as of now, the bot is only able to play two songs before breaking. I really need help as this just happened randomly and I'm unable to find anything online about the problem.

  


• Youtube-dl cannot read various set on batch script

  18 novembre 2019, par Al UrbaseR Blongtous

  I created an batch-script that positioned with youtube-dl and ffmpeg. I set several set to put URL and Video/Audio ID. Here my script that I simplified

  @echo off
  
  cd /d %root%\YT
  
  color 0a
  
  title Youtube Downloader
  
  setlocal enableDelayedExpansion
  
  set q=^"
  
  color 0a
  
  
  
  :submenu
  
  echo Please enter URL.
  
  set /p f1="URL: " 
  
  echo Checking ID...
  
  youtube-dl -F %f1%
  
  ping localhost -n 2 >nul
  
  goto menu
  
  
  
  :menu
  
  echo.
  
  echo Script created by UrbaseR
  
  echo ___________________________________________________________
  
  echo.
  
  echo                          MENU
  
  echo ___________________________________________________________
  
  echo OS Windows - %ComputerName%
  
  echo.
  
  echo M E N U
  
  echo Press 1 to Download Best version 
  
  echo Press 2 to Download Custom version + convert
  
  echo Press 3 to Exit
  
  
  
  set /p you=">"
  
  if %you%==1 goto 1
  
  if %you%==2 goto 2
  
  if %you%==3 goto 3
  
  
  
  cls
  
  echo *********************************
  
  echo Sorry invalid number!
  
  echo *********************************
  
  ping localhost -n 2 >nul
  
  goto menu
  
  
  
  :1
  
  echo Downloading...
  
  youtube-dl -f best %f1%
  
  echo.
  
  echo Done
  
  ping localhost -n 2 >nul
  
  cls
  
  goto submenu
  
  
  
  :2
  
  set /p id1="Insert Video ID: "
  
  set /p id2="Insert Audio ID: "
  
  echo Downloading Video..
  
  youtube-dl -f %id1% -ciw -o "vid.%(ext)s" -v --write-sub %f1%
  
  echo.
  
  echo Video Done
  
  ping localhost -n 2 >nul
  
  echo Downloading Audio..
  
  youtube-dl -f %id2% -ciw -o "aud.%(ext)s" -v %f1%
  
  echo.
  
  echo Audio Done
  
  ping localhost -n 2 >nul
  
  echo Converting Video
  
  ffmpeg -i "vid.%(ext)s" -i "aud.%(ext)s" -c:v copy -c:a aac -strict experimental "input.mkv"
  
  echo Converting Done
  
  ping localhost -n 4 >nul
  
  cls
  
  goto submenu
  
  
  
  :3
  
  exit

  First and third option execute successfully. Second option will appear the message like this :

  Usage : youtube-dl [OPTIONS] URL [URL...]
  youtube-dl : error : You must provide at least one URL.

  Type youtube-dl —help to see a list of all options.

  Note : Since I stuck on first and second stage of youtube-dl, ffmpeg may not work (I have not tested it yet).

  Can you help me ?