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• avformat/mxfdec : treat Random Index Pack as end of file

  26 mars 2023, par Marton Balint

  avformat/mxfdec : treat Random Index Pack as end of file
  RIP, if exists is the last KLV item in the MXF files therefore we can stop
  
  parsing the file if it is encountered. This allows us to support files created by
  
  broken muxers such as OpenCube MXFTk Advanced 2.8.0.0.1. which dumps some extra
  
  garbage after the RIP.
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] libavformat/mxfdec.c

• FFmpegPCMAudio not playing in discord no error

  9 mars 2023, par Anton Abboud

  Okey, it might be something obvious that ive missed but i really can't find the issue. I am currently making a discord-music-bot which has worked fine before. However as soon as i moved over to yt-dlp from youtube-dl (due to an error with youtube-dl) FFmpegPCMAudio doesn't play the music. It read through the code like normal but it simply doesn't play the sound. It even downloads the music from youtube so I am a bit confused. Here is what my code looks like :

  


  class music_cog(commands.Cog):
    
     #Searching the keyword on youtube
    def search_yt(self, item):
        with yt_dlp.YoutubeDL(self.YDL_OPTIONS) as ydl:
            try: 
                info = ydl.extract_info("ytsearch:%s" % item, download=False)['entries'][0]
            except Exception: 
                return False

        return {'source': info['formats'][0]['url'], 'title': info['title']}

    def play_next(self):
        if len(self.music_queue) > 0:
            self.is_playing = True

            
            #Get the first url
            my_url = self.music_queue[0][0]['source']

            global current_song_title
            current_song_title = self.music_queue[0][0]['title']

            #Remove the first song in queue as you are currently playing it
            self.music_queue.pop(0)

            self.vc.play(nextcord.FFmpegPCMAudio(my_url, **self.FFMPEG_OPTIONS), after=lambda e: self.play_next())
        else:
            self.is_playing = False

    # Infinite loop checking if there is a song in queue
    async def play_music(self, ctx):
        if len(self.music_queue) > 0:
            self.is_playing = True
            my_url = self.music_queue[0][0]['source']
            
            global current_song_title
            current_song_title = self.music_queue[0][0]['title']
            
            #Try to connect to voice channel if bot is not already connected
            if self.vc == None or not self.vc.is_connected():
                self.vc = await self.music_queue[0][1].connect()

                #In case the bot fails to connect
                if self.vc == None:
                    await ctx.send("Could not connect to the voice channel")
                    return
            else:
                await self.vc.move_to(self.music_queue[0][1])
            
            self.music_queue.pop(0)
            print("hello")
            self.vc.play(nextcord.FFmpegPCMAudio(my_url, **self.FFMPEG_OPTIONS), after=lambda e: self.play_next())
            
        else:
            self.is_playing = False

    @commands.command(name="play", aliases=["p"], help="Plays a selected song from youtube")
    async def play(self, ctx, *args):
        query = " ".join(args)
        
        if ctx.author.voice is None:
            #User needs to be connected so that the bot knows where to go
            await ctx.send("Connect to a voice channel!")
        
        elif self.is_paused:
            self.vc.resume()
        
        else:
            global song
            song = self.search_yt(query)
            if type(song) == type(True):
                #In case the song is not able to download
                await ctx.send("Could not download the song. Incorrect format try another keyword. This could be due to playlist or a livestream format.")
            else:
                await ctx.send(f"{song['title']} added to the queue, and gets played if nothing else is in the queue or currently playing")
                voice_channel = ctx.author.voice.channel
                self.music_queue.append([song, voice_channel])
                
                if self.is_playing == False:
                    await self.play_music(ctx)


  


  I have tried searching on how to use FFmpeg even though I have made it work before. but I haven't found anything of use. I wanted to convert back to youtube-dl but realized that it still won't work because of an issue in thier code. I can't really try anything else since im not getting an error. The terminal displays :

  


  [youtube:search] Extracting URL: ytsearch:heh 
[download] Downloading playlist: heh 
[youtube:search] query "heh": Downloading web client config
[youtube:search] query "heh" page 1: Downloading API JSON 
[youtube:search] Playlist heh: Downloading 1 items of 1 
[download] Downloading item 1 of 1
[youtube] Extracting URL: https://www.youtube.com/watch?v=8EhaZG7i9Bk
[youtube] 8EhaZG7i9Bk: Downloading webpage
[youtube] 8EhaZG7i9Bk: Downloading android player API JSON 
[download] Finished downloading playlist: heh 
hello


  


  I used "heh" as an example searchword and "hello" to check if the code actually read what it where it is supposed to play the audio.

  


  Please help !

  


• The system cannot find the file specified error when trying to execute FFMpeg command with C# (same code works fine in a different app)

  5 mars 2023, par m_kr

  I know there are similar questions to this one. I have gone through every single one I could find and nothing worked for me. Here is my issue :

  


  I am trying to execute a FFMpeg command in command-line through .NET.

  


  Before anything I tried doing it with the following code :

  


  public static string executeCommand(string commandToBeExecuted)
    {
        Process cmd = new Process();
        cmd.StartInfo.FileName = "cmd.exe";
        cmd.StartInfo.RedirectStandardInput = true;
        cmd.StartInfo.RedirectStandardOutput = true;
        cmd.StartInfo.CreateNoWindow = true;
        cmd.StartInfo.UseShellExecute = false;
        cmd.Start();

        cmd.StandardInput.WriteLine(commandToBeExecuted);
        cmd.StandardInput.Flush();
        cmd.StandardInput.Close();
        cmd.WaitForExit();
        return cmd.StandardOutput.ReadToEnd();
    }


  


  Sending the "ffmpeg -h" command in commandToBeExecuted. This did not work.

  


  I next tried the following solution :

  


  public static string ffmpegCommand(string commandToBeExecuted)
    {
        ProcessStartInfo startInfo = new ProcessStartInfo();
        startInfo.CreateNoWindow = false;
        startInfo.UseShellExecute = false;
        startInfo.FileName = "c:\\ffmpeg\\bin\\ffmpeg.exe";
        startInfo.WindowStyle = ProcessWindowStyle.Hidden;
        startInfo.Arguments = "-h";

        startInfo.RedirectStandardOutput = true;
        startInfo.RedirectStandardError = true;


        Process exeProcess = Process.Start(startInfo);

        // string error = exeProcess.StandardError.ReadToEnd();
        string output = exeProcess.StandardOutput.ReadToEnd();
        exeProcess.WaitForExit();
        return output;
    }


  


  This returns the following error :

  


  


  The system cannot find the file specified

  


  


  I am assuming this is referring to this part of the code :

  


  startInfo.FileName = "c:\\ffmpeg\\bin\\ffmpeg.exe";


  


  However, I checked and this is the correct path to my ffmpeg.exe file. On an even weirder note, this code works correct when tested in a new .net console application. However, I am creating an extension for OutSystems in integration, and when testing this code there it no longer works. The long exception from the logs is the following :

  


  


  CssbobffmpegCommandTestFolder
System.ComponentModel.Win32Exception : The system cannot find the file specified
at Object.s [as getException] (https://personal-jwy0bfog.outsystemscloud.com/FFMpegCommandGeneratorFFProbeVisual/scripts/OutSystems.js?RnlDcii3Xz75iIHHERIZtA:2:10241)
at c.onSuccess (https://personal-jwy0bfog.outsystemscloud.com/FFMpegCommandGeneratorFFProbeVisual/scripts/OutSystems.js?RnlDcii3Xz75iIHHERIZtA:3:7232)
at XMLHttpRequest. (https://personal-jwy0bfog.outsystemscloud.com/FFMpegCommandGeneratorFFProbeVisual/scripts/OutSystems.js?RnlDcii3Xz75iIHHERIZtA:3:2648)

  


  


  I researched similar problems and tried the following solutions :

  


  In place of :

  


  startInfo.FileName = "c:\\ffmpeg\\bin\\ffmpeg.exe";


  


  I tried :

  


    startInfo.WorkingDirectory = "c:\\ffmpeg\\bin";
  startInfo.FileName = @"ffmpeg.exe";


  


  I also tried changing the :

  


  startInfo.Arguments = "-h";


  


  to :

  


  startInfo.Arguments = "/C -h";


  


  I tried to "add new item" to my solution : the ffmpeg.exe file, and I tried the following logic :

  


  public static string testingNewApproachTwoThree(string commandToBeExecuted)
    {
        string res;
        ProcessStartInfo startInfo = new ProcessStartInfo();

        startInfo.CreateNoWindow = false;
        startInfo.UseShellExecute = false;
        startInfo.FileName = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ffmpeg\\ffmpeg.exe");
        startInfo.Arguments = "-h";
        startInfo.RedirectStandardOutput = true;
        //startInfo.RedirectStandardError = true;

        res = string.Format(
            "Executing \"{0}\" with arguments \"{1}\".\r\n",
            startInfo.FileName,
            startInfo.Arguments) + " NEXT: ";

        try
        {
            using (Process process = Process.Start(startInfo))
            {
                while (!process.StandardOutput.EndOfStream)
                {
                    res = res + process.StandardOutput.ReadLine();

                }

                process.WaitForExit();
            }
        }
        catch (Exception ex)
        {
            res = res + "exception:" + ex.Message;
        }

        return res;
    }


  


  as suggested in a different question.

  


  I tried changing the capitalization of letters in the specified filepath to make sure it matches the naming of my folders. Nothing worked.

  


  Any ideas ?