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• Discord.py Music Bot problem with FFmpeg on heroku

  16 mai 2020, par Phantom_7331

  I'm coding my first music bot for discord and successfully tested it on the localhost. After that, I moved it on Heroku and installed FFmpeg buildpack for it. But for some reason, it doesn't work.
Here is proof that I installed FFmpeg buildpack on Heroku : Screen

  



  Here is my code (that works well on localhost) :

  



  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:
        data = data['entries'][0]

    filename = data['url'] if stream else ytdl.prepare_filename(data)
    return cls(discord.FFmpegPCMAudio(filename, **ffmpeg_options), data=data)

@client.command()
async def join(ctx):
channel = ctx.message.author.voice.channel
if ctx.voice_client is not None:
    return await ctx.voice_client.move_to(channel)
await channel.connect()

@client.command()
async def play(ctx, *, URL):
    async with ctx.typing():
        player = await YTDLSource.from_url(url)
        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))


  


• How to not add AdaptationSet for audio if audio stream is not present in input file

  13 juin 2019, par Saurabh

  I am using ffmpeg-dash to create mpd files. I am using following command to generate the same :

  ffmpeg -i input/video.mov \
  
          -map 0:v:0 -map 0:v:0 -map 0:v:0 -map 0:a\?:0 \
  
          -b:v:0 350k -c:v:0 libx264 -filter:v:0 "scale=320:-1" \
  
          -b:v:1 1000k -c:v:1 libx264 -filter:v:1 "scale=640:-1" \
  
          -b:v:2 3000k -c:v:2 libx264 -filter:v:2 "scale=1280:-1" \
  
          -use_timeline 1 -use_template 1 -window_size 6  -adaptation_sets "id=0,streams=v id=1,streams=a"  \
  
          -seg_duration 2 -threads 16 -hls_playlist true -f dash output/ffmpeg/output.mpd

  This works with video which has audio streams, but for the case there is no audio stream in the video file, I get empty entry for audio in mpd files like following, which is not valid and fails while playing in Exo Player in Android.

  <adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true">
  
  </adaptationset>

  I tried adding ? in option adaptation_sets like : id=0,streams=v id=1,streams=a?, however that also adds above line.

  One solution is to run different commands for different videos by first checking whether there is audio stream or not, but would be better if there is some option which add audio adaptationSet only if audio stream is present in the input file.

• Running FFmpeg in Azure Function app not working when deployed with Azure Pipelines

  8 septembre 2023, par Isak Engström

  I'm unable to run ffmpeg in a .Net 7 isolated process Azure Function app in Azure after deploying it through Azure Pipelines. I can run it locally, and I've been able to run ffmpeg after deploying the app manually.

  


  Here's an example of how I run the ffmpeg process. The process.ExitCode on exit is always '-1073741515' when it's been deployed through Azure Pipelines.

  


  internal bool IsFfmpegExecutable(string ffmpegPath)
{
    try
    {
        using var process = new Process();
        var startInfo = new ProcessStartInfo
        {
            FileName = ffmpegPath,
            RedirectStandardOutput = true,
            RedirectStandardError = true,
            UseShellExecute = false,
            CreateNoWindow = true,
            Arguments = "-version"
        };

        process.StartInfo = startInfo;

        process.OutputDataReceived += (_, _) => { };
        process.ErrorDataReceived += (_, _) => { };

        process.Start();
        process.WaitForExit();

        return process.ExitCode == 0;
    }
    catch (Exception)
    {
        return false;
    }
}


  


  The path to the ffmpeg.exe (along with the other ffmpeg dll and exe files) are correct, as I've checked it with File.Exists(). All those files are located in the C :\home\site\wwwroot\ffmpeg\ folder in Azure, as can be seen in Kudu :

  


  Any idea of how I can get it working ?