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• I have a audio in 128kbps that was read 16KB every second, but it seems that I am getting more than 1 seconds of the music each time. Why ?

  23 décembre 2022, par Hexona

  So I have a new stream to which I will push 2048 bytes of audio buffer every 128ms (i.e. 16KB every second) but I seem to have more than 1 second of data pushed to the stream. (I think so by finding ffmpeg is still streaming sound even tens of seconds after I stop pushing data in it)

  


  When I changed it to 1024 bytes/128ms (8KB/s), the sound stop right after I stop pushing data.

  


  Please correct me if I do anything wrong !

  


  Some background story

  


  I am using ffmpeg to stream to a rtp server. It is one-time used, so I can't stop ffmpeg and start again. I don't want to use the ZeroMQ way because of latency. The target I am trying to archive is to have the same readable stream to ffmpeg and change the audio content on the go by stop pushing chunks of previous audio file and switch to the new one.

  


  If you know some other ways to archive the goal, I would be very pleased to know. Thank you in advance !

  


  My current code

  


  const stream = new Stream.Readable();

// ...
// (send stream to ffmpeg)
// ...

fileP = fs.createReadStream(input);
fileP.on('readable', async () => {
    var chunk;
    while (previousStream && (chunk = fileP?.read(16 * 128))) {
        if (!previousStream) break;
        stream.push(chunk);
        await delay(125);
    }
});


  


• How to change or modify pitch of audio file (music etc like .mp3 file)using FFMPEG ?

  18 octobre 2022, par syed kashifullah

  I want to change and modify pitch an .mp3 audio file using FFMPEG.
But I am unable to use FFMPEG to change or modify pitch of that sound.
what command (exact command) should be exactly use for changing pitch of an audio file ?

  


   String outPutPath = new File("/storage/emulated/0/Share it Application/Over_the_HorizonTemp.wav").getPath();
                 
                String[] strFfmpeg  = {"ffmpeg","-i" ,strInputPath,"-af", "rubberband=tempo=1.0:pitch=1.5:pitchq=quality" ,outPutPath};
                execffmpegBinary(strFfmpeg);


  


  execffmpegBinary Function :

  


  public void execffmpegBinary(String[] command) {
    Config.enableLogCallback(new LogCallback() {
        @Override
        public void apply(LogMessage message) {
            Log.e(Config.TAG, message.getText());
            Log.e("TAG", "apply: " +message.getText());
        }
    });
    Config.enableStatisticsCallback(new StatisticsCallback() {
        @Override
        public void apply(Statistics statistics) {

        }
    });

    long executionId = FFmpeg.executeAsync(command, new ExecuteCallback() {
        @Override
        public void apply(long executionId, int returnCode) {
            if (returnCode == RETURN_CODE_SUCCESS) {
                
                Log.e("1TAG", "apply:return code "+returnCode );
                Log.e("1TAG", "apply:execution Id "+executionId );
                Log.e("1TAG", "apply:execution Id "+ new FFmpegExecution(executionId,command));


            } else if (returnCode == RETURN_CODE_CANCEL) {
                Log.e("2TAG", "apply:return code "+returnCode );
                Log.e("2TAG", "apply:execution Id "+executionId );
                Log.e("2TAG", "apply:execution Id "+ new FFmpegExecution(executionId,command));

            } else {
                Log.e("3TAG", "apply: returnCode"+ returnCode);
                Log.e("3TAG", "apply:return code "+returnCode );
                Log.e("3TAG", "apply:execution Id "+executionId );
                Log.e("3TAG", "apply:execution Id "+ new FFmpegExecution(executionId,command));

            }
        }
    });
}


  


• ffmpeg error that causes songs to be skipped in discord.py music bot

  28 septembre 2022, par Wolfy

  I'm making a music bot in python. Sometimes when the music is playing, such an error may come out

  


  [tls @ 0x56540863c280] Error in the pull function.
[matroska,webm @ 0x565408639460] Read error
[tls @ 0x56540863c280] The specified session has been invalidated for some reason.


  


  [https @ 0x55ef3042ae80] HTTP error 403 Forbidden
https://rr5---sn-qxoedne7.googlevideo.com/videoplayback?expire=1643908737&ei=ILr7YYvvOfeA_tcP1P-O6AE&ip=34.70.213.61&id=o-AP2Y_3KL9ByYzaHpK9BTYU-rXEdyhVBdmAya4-RDcnhA&itag=249&source=youtube&requiressl=yes&mh=up&mm=31%2C26&mn=sn-qxoedne7%2Csn-5goeen7d&ms=au%2Conr&mv=u&mvi=5&pl=20&vprv=1&mime=audio%2Fwebm&ns=R7IIdhU6N1T67hOi5mk4h1gG&gir=yes&clen=1237668&dur=200.101&lmt=1643350535759614&mt=1643886547&fvip=4&keepalive=yes&fexp=24001373%2C24007246&c=WEB&txp=5432434&n=f5o7FLev4k11Jt4&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cvprv%2Cmime%2Cns%2Cgir%2Cclen%2Cdur%2Clmt&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl&lsig=AG3C_xAwRQIhAI7fuWyVPY7zdiGm2FemrcqsDuQWjcqfSnLKxw66QoSwAiBOJHGVpoRCKu2ZnW3DPGxK8bKS-FfvyyxG2hRgg2TRVw%3D%3D&sig=AOq0QJ8wRQIgOWU5ecufOjhtuwQNdWX5l140N5cW7Hu01SfC9b6Zkg4CIQC0ZzrrXwUtf4qkvWZaQCEfWpOmZJhBmca0sYqqmxh75A==: Server returned 403 Forbidden (access denied)


  


  [dash @ 0x5596ac7e6460] Could not read complete fragment.
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5596acb12940] Stream #0: not enough frames to estimate rate; consider increasing probesize
[dash @ 0x5596ac7e6460] Could not read complete fragment.


  


  A piece of code to launch a song :

  


  YDL_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, 'forceipv4': True,'cookies': True, 'default_search': 'auto','encoding': 'utf-8', "simulate": True, 'audioformat': "mp3",'audioquality': 5,'source_address': '0.0.0.0',"bitrate": 320000,"prefer_ffmpeg": True,"usenetrc": True,"verbose": False}
FFMPEG_OPTIONS = {'options': '-vn'}
vc.play(discord.FFmpegPCMAudio( source = URL, **FFMPEG_OPTIONS))
vc.source = discord.PCMVolumeTransformer(vc.source)
vc.source.volume = 1


  


  How do I catch these errors or how do I fix them ?