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• FFMPEG filter_complex wih speedup and subtitles and scaling

  11 décembre 2015, par Sambir

  Hi I am trying to convert a file to a specific framerate and remove any jittering, jumping of the screen. I also try to boost the volume and add a subtitle overlay. I get an error with the curent line than it is not allowed to use complex_filter in combination with vf and af. as an extra I also would like to add text in the left corner (this i did not try yet) and would want the screen to be sized to full hd (changed scale to 1920:1080 but no succes).

  ffmpeg -i movie.mp4 -r 25 -filter_complex "[0:v]setpts=0.959*PTS[v];[0:a]atempo=1.0427[a]" -map "[v]" -map "[a]" -vf subtitles=sub.srt,scale=1920:1080 -af volume=2 -strict -2 -preset veryfast movie_new.mp4

  Got it !

  New :

  ffmpeg -i inside.mp4 -r 25 -filter_complex "[0:v]setpts=0.959*PTS[i];[i]scale=1920:1080[j];[j]subtitles=inside.srt[k];[0:a]atempo=1.0427[p];[p]volume=2[q]" -map "[k]" -map "[q]" -strict -2 -preset veryfast inside_new.mp4

  But now there is a new issue. Subs out of sync :P is there a easy fix for this or do i first need to encode without subs then resync then encode with subs ?

  found this link by the way Subtitle Resync Tool

  moviespeed is changed by 0.959. is there a calculation i can do to adjust the subtitles by x miliseconds ?

  EDIT : Got the subtitles fixed with subtitle workshop. Was just a small setting to change which directly shifted all the text :)

• 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