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• ffmpeg amerge prefer longest audio track

  4 décembre 2013, par Adam Chance

  I'm trying to combine two audio tracks in ffmpeg with amerge, but it is only as long as the shortest feature. The ffmpeg wiki says that this is the behaviour of the amerge filter, but I need the output to be as long as the longest audio track. The code I'm using is

  ffmpeg -i audio.flac -i song.flac -filter_complex amerge -acodec mp2 -b:a 128k audiotrack.mp2

  Console output :

      ffmpeg version N-58688-gc46ab34 Copyright (c) 2000-2013 the FFmpeg developers
  
      built on Dec  1 2013 14:39:22 with gcc 4.7 (Ubuntu/Linaro 4.7.3-1ubuntu1)
  
      configuration: --enable-outdev=alsa --enable-indev=alsa --enable-gpl --enable-x11grab --enable-libpulse --enable-libopus --enable-libvorbis --enable-libtheora --enable-pthreads
  
      libavutil      52. 56.100 / 52. 56.100
  
      libavcodec     55. 44.100 / 55. 44.100
  
      libavformat    55. 22.100 / 55. 22.100
  
      libavdevice    55.  5.102 / 55.  5.102
  
      libavfilter     3. 91.100 /  3. 91.100
  
      libswscale      2.  5.101 /  2.  5.101
  
      libswresample   0. 17.104 /  0. 17.104
  
      libpostproc    52.  3.100 / 52.  3.100
  
      Input #0, flac, from 'audio.flac':
  
      Metadata:
  
      ENCODER         : Lavf55.22.100
  
      Duration: 00:00:04.14, bitrate: 172 kb/s
  
      Stream #0:0: Audio: flac, 16000 Hz, mono, s16
  
      Input #1, flac, from 'song.flac':
  
      Duration: 00:07:38.04, bitrate: 676 kb/s
  
      Stream #1:0: Audio: flac, 44100 Hz, stereo, s16
  
      Stream #1:1: Video: mjpeg, yuvj444p(pc), 500x500 [SAR 28:28 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
  
      Metadata:
  
      comment         : Cover (front)
  
      File 'audiotrack.mp2' already exists. Overwrite ? [y/N] y
  
      [Parsed_amerge_0 @ 0x317f580] No channel layout for input 1
  
      Output #0, mp2, to 'audiotrack.mp2':
  
      Metadata:
  
      encoder         : Lavf55.22.100
  
      Stream #0:0: Audio: mp2, 16000 Hz, stereo, s16, 128 kb/s (default)
  
      Stream mapping:
  
      Stream #0:0 (flac) -> amerge:in0
  
      Stream #1:0 (flac) -> amerge:in1
  
      amerge -> Stream #0:0 (mp2)
  
      Press [q] to stop, [?] for help
  
      size=      65kB time=00:00:04.14 bitrate= 128.9kbits/s

• Discord.py ffprobe/avprobe and ffmpeg/avconv not found error

  20 juillet 2021, par Exd Craft

  Im hosting this discord bot using android device and the bot is used to play music using youtube_dl module, and when i launch the play music command, i got and error where ffprobe/avprobe and ffmpeg/avconv not found. I know how to solve this problem in pc but im still dont know how to fix this on android. For the test here, im using a music from soundcloud since its more faster to download the music.

  


  Here's the error message on the terminal

  


  Logged in as Test Bot#6599\
[soundcloud] user-785177525/yoasobi-yoru-ni-kakeru-x-l-a-b-remix: Downloading info JSON\
[soundcloud] None: Downloading webpage\
[soundcloud] None: Downloading webpage\
[soundcloud] user-785177525/yoasobi-yoru-ni-kakeru-x-l-a-b-remix: Downloading info JSON\
[soundcloud] 895894084: Downloading JSON metadata\
[soundcloud] 895894084: Downloading JSON metadata\
[soundcloud] 895894084: Downloading JSON metadata\
[download] Destination: YOASOBI - Yoru ni Kakeru [x l a b. Remix]-895894084.mp3\
[download] 100% of 3.60MiB in 00:03\
ERROR: ffprobe/avprobe and ffmpeg/avconv not found. Please install one.


  


  Here's the sample code for the play music command

  


  


  


       @client.command()
     async def playsc(ctx, url : str, *, message):
         song_there = os.path.isfile("song.mp3")
         try:
             if song_there:
                 os.remove("song.mp3")
         except PermissionError:
             em8 = discord.Embed(title = "Music Is Currently Playing", description = 'Please wait for the current playing music to end or use %leave <:_Paimon6:827074349450133524>.\nMusic provided by {ctx.author.mention} <:_Paimon6:827074349450133524>',color = ctx.author.color)
             await ctx.send(embed = em8)
             return

         voiceChannel = discord.utils.get(ctx.guild.voice_channels, name=message)
         await voiceChannel.connect()
         voice = discord.utils.get(client.voice_clients, guild=ctx.guild)
         em6 = discord.Embed(title = "Downloading Soundcloud Music", description = f'{url}\n\nPlease wait for paimon to setup the music you provide.\nMusic provided by {ctx.author.mention} <:_Paimon6:827074349450133524>',color = ctx.author.color)
         await ctx.send(embed = em6, delete_after = 2)
         await ctx.message.delete()

         ydl_opts = {
             'format': 'bestaudio/best',
             'postprocessors': [{
                 'key': 'FFmpegExtractAudio',
                 'preferredcodec': 'mp3',
                 'preferredquality': '192',
             }],
         }
         with youtube_dl.YoutubeDL(ydl_opts) as ydl:
             ydl.download([url])
         for file in os.listdir("./"):
             if file.endswith(".mp3"):
                 os.rename(file, "song.mp3")
         voice.play(discord.FFmpegPCMAudio("song.mp3"))
        
         em1 = discord.Embed(title = "Now Listening Soundcloud Music", description = f'{url}\n\nPlease use %leave first to change music.\nMusic provided by {ctx.author.mention} <:_Paimon6:827074349450133524>',color = ctx.author.color)
         await ctx.send(embed = em1)

  


  


  



• lavfi/colorspace : move some functions to common file

  22 janvier 2019, par Ruiling Song

  lavfi/colorspace : move some functions to common file
  These functions can be reused by other colorspace filters,
  
  so move them to common file. No functional changes.
  Signed-off-by : Ruiling Song <ruiling.song@intel.com>
  

  • [DH] libavfilter/colorspace.c
  • [DH] libavfilter/colorspace.h
  • [DH] libavfilter/vf_colorspace.c