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• FFmpeg dosn't listen on RTP port in debian

  26 juin 2021, par MSS

  I compose a command to encode my HLS audio stream to a mp3 stream :

  


  ffmpeg -re -i "http://cdn1.live.irib.ir:1935/channel-live/smil:r-payam/chunklist_b307200_slFa.m3u8" -acodec libmp3lame   -f rtp rtp://127.0.0.1:9434/


  


  When I run the command on windows 10 machine FFmpeg start to listen on port 9434 and works perfectly :

  


  

  


  But when I run it on my Debian machine it doesn't bind to specified port and also any of bind ports doesn't work :

  


  

  


  Running out put :

  


  

  


  FFmpeg version info :

  


  ffmpeg version N-57736-ga501d55905-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libfribidi --enable-libass --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libxml2 --enable-libxvid --enable-libzimg
libavutil      57.  0.100 / 57.  0.100
libavcodec     59.  1.101 / 59.  1.101
libavformat    59.  3.100 / 59.  3.100
libavdevice    59.  0.100 / 59.  0.100
libavfilter     8.  0.102 /  8.  0.102
libswscale      6.  0.100 /  6.  0.100
libswresample   4.  0.100 /  4.  0.100
libpostproc    56.  0.100 / 56.  0.100


  


  Does any body knows the correct way of stream rtp on debian ?

  


• How to get a file converted by ffmpeg in Android : permission denied

  2 juin 2021, par Omid.N

  I am trying to use FFmpeg in my android app. So I want to test it if it works before moving on. I use an external library : github link
  
The code looks like this :

  


  package net.omidn.aslanmediaconverter;

import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import com.arthenica.ffmpegkit.ExecuteCallback;
import com.arthenica.ffmpegkit.FFmpegKit;
import com.arthenica.ffmpegkit.FFmpegSession;
import com.arthenica.ffmpegkit.Session;

import net.bramp.ffmpeg.job.FFmpegJob;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;


public class MainActivity extends AppCompatActivity {
    
    private static final String TAG = "MainActivity";
    FFmpegJob myjob;

    @Override
    protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView textView = (TextView) findViewById(R.id.text_view);


        FFmpegJob job = null;

        File inFile = new File("/storage/emulated/0/video_2021-05-29_17-50-20.mp4");
        String inputName = Uri.fromFile(inFile).toString();
        Log.d(TAG, inputName);
        Log.d(TAG,"file exists : " + String.valueOf(inFile.exists()));
        Log.d(TAG,"file canRead : " + String.valueOf(inFile.canRead()));

        FFmpegSession fFmpegSession = FFmpegKit.executeAsync("-i file:///storage/emulated/0/video_2021-05-29_17-50-20.mp4 -c:v mpeg4 file:///storage/emulated/0/out.mp4",
                new ExecuteCallback() {
                    @Override
                    public void apply(Session session) {

                    }
                });
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        textView.setText("" + fFmpegSession.getState().name() + "    " + fFmpegSession.getOutput());
    }

}



  


  As you can see I give the files with file:/// protocol. If I don't use that the resault is the same. The three lines of Log.d(...) will print :

  


  2021-06-03 00:58:08.869 8376-8376/net.omidn.aslanmediaconverter D/MainActivity: file:///storage/emulated/0/video_2021-05-29_17-50-20.mp4
2021-06-03 00:58:08.869 8376-8376/net.omidn.aslanmediaconverter D/MainActivity: file exists : true
2021-06-03 00:58:08.869 8376-8376/net.omidn.aslanmediaconverter D/MainActivity: file canRead : false


  


  The video file has read access on the storage :


  


• Convert mkv to mp4

  7 juin 2021, par KalemKutu

  I have a video file input.mkv
It contains 2 audios and only 1 substring.

  


  I want to convert it in mp4 with same quality.
It should contain same : 2 audios and 1 substring.

  


  I tried :

  


  ffmpeg -i input.mkv -map 0:v:0 -map 0:a:0 -map 0:a:1 -map 0:s:0 -c copy output.mp4

  


  I got an error message :

  


      Could not find tag for codec subrip in stream #3, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:3 -- 


  


  .

  


  I tried also

  


  ffmpeg -i input.mkv -c copy -c:s mov_text output.mp4

  


  But this line converts audio=1 and substitle=1, but NO audio 2.

  


  Anyone who can help me ?

  


  Thanks,
Kalem

  


  PS : I am using mac version of ffmpeg downloaded on "2021-06-05"