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• FFMPEG MP3 file size much larger than expected on Windows 10

  8 avril 2018, par The Gora

  I’ve been using FFMPEG on Windows to :

  1. Convert iTunes M4A files to MP3s (with a bit rate of 128k) ; and
  2. Create 30 sec sample MP3s of the above MP3s (same bit rate).

  When I run FFMEG on a Windows 7 64 bit machine, the size of the MP3s (both for 1. & 2.) is in line with the rough calculation of :

  (Audio length in seconds) X (Bit rate)

  For example, a 4 minute audio yields an approx. 3.7MB MP3 file ; a 30 second sample MP3 is approx. 470KB.

  However when I run the same FFMPEG binary (copied from the Windows 7 machine) on a Windows 10 64 bit machine, all of the MP3s (both for 1. and for 2.) are inflated by approx 5MB. I’m using the same batch file on both machines to execute FFMEG with the required parameters, so pretty confident the difference is not down to user error.

  My questions are :

  1. Why is there this apparent 5MB overhead on Windows 10 ? and more importantly ;
  2. What can I do to remove this ?

  The large file size is a problem as the sample MP3s are to be put on a website for people to listen to a snippet of the song, and the webpage with multiple tags takes a long time to load completely (several minutes).

  Here is the version and lib info :

  ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
 built with gcc 7.2.0 (GCC)
 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
 libavutil      55. 78.100 / 55. 78.100
 libavcodec     57.107.100 / 57.107.100
 libavformat    57. 83.100 / 57. 83.100
 libavdevice    57. 10.100 / 57. 10.100
 libavfilter     6.107.100 /  6.107.100
 libswscale      4.  8.100 /  4.  8.100
 libswresample   2.  9.100 /  2.  9.100
 libpostproc    54.  7.100 / 54.  7.100

  And here are the command lines I’m using :

  1. ffmpeg -i input.m4a -id3v2_version 3 -b:a 128k -output.mp3
  2. ffmpeg -i input.m4a -ss 30 -t 30 -af "afade=in:st=30:d=5,afade=out:st=55:d=5" -id3v2_version 3 -b:a 128k -output.mp3

• Delete file after discord.FFmpegPCMAudio is done playing

  12 novembre 2023, par Moni

  I want to delete a mp3 file in the same directory after discord.FFmpegPCMAudio is done playing, but i don't know how ! I've searched everywhere before posting here, but with no luck.

  


  @bot.command(name='play')
async def play(ctx, url):
 global current_audio_file
 voice_client = ctx.guild.voice_client

 if voice_client.is_connected():
    if ctx.author.voice and ctx.author.voice.channel == voice_client.channel:
        try:
            server = ctx.guild
            voice_channel = server.voice_client

            async with ctx.typing():
                if "youtube" or "youtu" in url:
                    result, title = await download_youtube_audio(url)
                    result_b = bytes(result, "utf-8")
                    audio_file_name = codecs.decode(result_b, 'charmap')

                    audio_file, title2 = find_file(audio_file_name, 2)
                elif "spotify" in url:
                    result = await download_spotify_audio(url)
                    result_b = bytes(result, "utf-8")
                    audio_file_name = codecs.decode(result_b, 'charmap')

                    audio_file, title = find_file(audio_file_name, 1)

                if result:
                    if "ERROR" not in result:
                        await ctx.send(f'**Now playing:** {title}')

                        if not voice_channel.is_playing():
                            voice_channel.on_audio_end = lambda e: asyncio.create_task(delete_file(audio_file))

                            voice_channel.play(discord.FFmpegPCMAudio(executable="ffmpeg.exe", source=audio_file))
                            current_audio_file = audio_file
                        else:
                            await ctx.send("Another song is playing right now!")
                    else:
                        print(f"An error occurred while trying to download the audio. Error: {result}")
                        send_error(ctx, Exception(result))
                else:
                    await ctx.send("An error occurred while trying to download the audio.")
        except Exception as e:
            print(f"An error occurred: {e}")
            send_error(ctx, e)
            await ctx.send("An error occurred while trying to play the audio.")
    else:
        await ctx.send("You are not in the same voice channel as the bot.")
else:
    await ctx.send("The bot is not connected to a voice channel.")

def delete_file(filename: str):
if os.path.exists(filename):
    os.remove(filename)
    print(f"Deleted {filename}")


  


  If anyone knows how to do it, please help me out.

  


• Why are v0, v1, and v2 of ffmpeg still under active development ? What happened to ppa:jon-severinsson/ffmpeg ?

  12 avril 2015, par cxrodgers

  I know about the long history of ffmpeg and libav. Personally, I preferred to use Jon Severinsson’s PPA, as suggested in many answers here on stackoverflow or askubuntu. However, recently this PPA seems to have gone down recently (this page, which is the link everyone always gives, is dead). I don’t see if he put up a newer version, although I admit I find launchpad hard to navigate. Did it get replaced with this one from Doug McMahon or this one from Sam Rog ?

  Ok, so maybe I need to download it myself. I visit the releases page for ffmpeg, and there seems to be simultaneous development of releases from v2 (2.6.2), v1 (1.2.12, from February), and v0 (0.10.16, from March of this year). 0.10 isn’t even the newest of the v0 series, and yet it seems to be the most recently updated of that series, and (coincidentally ?) also the version that I most recently got from the PPA. Admittedly this was on a slightly older distribution (Linux Mint 16).

  ffmpeg -version
  
  ffmpeg version 0.10.12-7:0.10.12-1~saucy1

  So, which version should I download, now that the PPA is gone ? Does it depend on the distribution I’m using ?