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• FFmpeg : convert images and multi audio files to mp4 file

  2 octobre 2015, par Cường Trần

  I have 100 images need to convert to mp4 video, the length of video is 30s. In that time, i have 2 audio files need to be played.

  Audio 1 : should play from 5s to 15s, and audio length is 1 minute. And i want to play from 00:30 of that audio.

  Audio 2 : playing from 20s to 30s, and audio length is 10s, the same with time that i want to play in video. But i want to increase volume when start(from 0 to 1) and decrease volume when ended(from 1 to 0).

  Do you have any idea of FFmpeg command to execute it ?

  [For example : image named : image_001.jpg, image_002.jpg ..... image_100.jpg, and audios : audio1.mp3, audio2.mp3]

  Here is current FFmpeg comment that i use to convert mp4 file :
  ffmpeg -start_number 0 -i image_%03d.jpg -c:v libx264 -t 30 -pix_fmt yuv420p video.mp4

  Thank for your help.

  Regard,
  Cuong.Tran

• Anyway to get current playtime of a song ?

  2 décembre 2019, par Blue Lightning

  So this is the basic voice that I’m currently using to play music through my bot. I’m streaming the audio (using the stream async function) opposed to downloading it local. Anyway I can get the current playtime of the song that is being played ?

  So whenever someone plays a song, they can, whenever they want, see how much of the song they played through already.

  import asyncio
  
  
  
  import discord
  
  import youtube_dl
  
  
  
  from discord.ext import commands
  
  
  
  # Suppress noise about console usage from errors
  
  youtube_dl.utils.bug_reports_message = lambda: ''
  
  
  
  
  
  ytdl_format_options = {
  
      'format': 'bestaudio/best',
  
      'outtmpl': '%(extractor)s-%(id)s-%(title)s.%(ext)s',
  
      'restrictfilenames': True,
  
      'noplaylist': True,
  
      'nocheckcertificate': True,
  
      'ignoreerrors': False,
  
      'logtostderr': False,
  
      'quiet': True,
  
      'no_warnings': True,
  
      'default_search': 'auto',
  
      'source_address': '0.0.0.0'
  
  }
  
  
  
  ffmpeg_options = {
  
      'options': '-vn'
  
  }
  
  
  
  ytdl = youtube_dl.YoutubeDL(ytdl_format_options)
  
  
  
  
  
  class YTDLSource(discord.PCMVolumeTransformer):
  
      def __init__(self, source, *, data, volume=0.5):
  
          super().__init__(source, volume)
  
  
  
          self.data = data
  
  
  
          self.title = data.get('title')
  
          self.url = data.get('url')
  
  
  
      @classmethod
  
      async def from_url(cls, url, *, loop=None, stream=False):
  
          loop = loop or asyncio.get_event_loop()
  
          data = await loop.run_in_executor(None, lambda: ytdl.extract_info(url, download=not stream))
  
  
  
          if 'entries' in data:
  
              # take first item from a playlist
  
              data = data['entries'][0]
  
  
  
          filename = data['url'] if stream else ytdl.prepare_filename(data)
  
          return cls(discord.FFmpegPCMAudio(filename, **ffmpeg_options), data=data)
  
  
  
  
  
  class Music(commands.Cog):
  
      def __init__(self, bot):
  
          self.bot = bot
  
  
  
      @commands.command()
  
      async def join(self, ctx, *, channel: discord.VoiceChannel):
  
          """Joins a voice channel"""
  
  
  
          if ctx.voice_client is not None:
  
              return await ctx.voice_client.move_to(channel)
  
  
  
          await channel.connect()
  
  
  
      @commands.command()
  
      async def stream(self, ctx, *, url):
  
          """Streams from a url (same as yt, but doesn't predownload)"""
  
  
  
          async with ctx.typing():
  
              player = await YTDLSource.from_url(url, loop=self.bot.loop, stream=True)
  
              ctx.voice_client.play(player, after=lambda e: print('Player error: %s' % e) if e else None)
  
  
  
          await ctx.send('Now playing: {}'.format(player.title))
  
  
  
      @commands.command()
  
      async def volume(self, ctx, volume: int):
  
          """Changes the player's volume"""
  
  
  
          if ctx.voice_client is None:
  
              return await ctx.send("Not connected to a voice channel.")
  
  
  
          ctx.voice_client.source.volume = volume / 100
  
          await ctx.send("Changed volume to {}%".format(volume))
  
  
  
      @commands.command()
  
      async def stop(self, ctx):
  
          """Stops and disconnects the bot from voice"""
  
  
  
          await ctx.voice_client.disconnect()
  
  
  
      @play.before_invoke
  
      @yt.before_invoke
  
      @stream.before_invoke
  
      async def ensure_voice(self, ctx):
  
          if ctx.voice_client is None:
  
              if ctx.author.voice:
  
                  await ctx.author.voice.channel.connect()
  
              else:
  
                  await ctx.send("You are not connected to a voice channel.")
  
                  raise commands.CommandError("Author not connected to a voice channel.")
  
          elif ctx.voice_client.is_playing():
  
              ctx.voice_client.stop()
  
  
  
  bot = commands.Bot(command_prefix=commands.when_mentioned_or("!"),
  
                     description='Relatively simple music bot example')
  
  
  
  @bot.event
  
  async def on_ready():
  
      print('Logged in as {0} ({0.id})'.format(bot.user))
  
      print('------')
  
  
  
  bot.add_cog(Music(bot))
  
  bot.run('token')

• ffmpeg aloop filter not working correctlly

  3 décembre 2020, par Abhishek Sharma

  I am trying to run FFmpeg Command as follow

  


  -i "v1.mov" -i "0.mp3" -filter_complex "[0:v]trim=0:204,setpts=PTS-STARTPTS[TrimmedVideo];[0:a]atrim=0:204,asetpts=PTS-STARTPTS[TrimmedAudio];[TrimmedVideo]scale=848:360[BackgroundOutput];[1:a]atrim=0:20,asetpts=PTS-STARTPTS,volume=0.37,aloop=1:size=1*48000,adelay=0|0[AudioTrim0];[TrimmedAudio][AudioTrim0]amix=inputs=2:duration=first:dropout_transition=2,volume=2[AudioMixOut];[BackgroundOutput][AudioMixOut]concat=n=1:v=1:a=1[OutputVideo][OutputAudio]" -map [OutputVideo] -map [OutputAudio] -c:v libx264 -c:a aac -b:a 256k -preset ultrafast "ouput.mp4"


  


  in this, I used aloop to loop audio to fill in the video but that audio is not repeating, it played once then stoped