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• Combine two Videos with different framerates using ffmpeg

  3 juin 2021, par Patola

  ffmpeg -f concat -i mylist.txt -c copy output.mp4


  


  Combined video produced by above command is 17 mins. I think its because of the framerates. Is there a way to get proper output.

  


  Is there a tool I can use to change the framerate of one vid to match the other.

  


  Please see text below to see configurations of two videos.

  


  ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Full.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp41isom
    creation_time   : 2021-06-01T10:57:14.000000Z
  Duration: 00:08:57.08, start: 0.000000, bitrate: 2527 kb/s
  Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 2526 kb/s, 30.30 fps, 30.30 tbr, 30k tbn, 60 tbc (default)
    Metadata:
      creation_time   : 2021-06-01T10:57:14.000000Z
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : AVC Coding
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:00:11.93, start: 0.000000, bitrate: 20939 kb/s
  Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 20973 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
File 'output.mp4' already exists. Overwrite? [y/N] y
Output #0, mp4, to 'output.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp41isom
    encoder         : Lavf58.76.100
  Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 2526 kb/s, 30.30 fps, 30.30 tbr, 30k tbn, 30k tbc (default)
    Metadata:
      creation_time   : 2021-06-01T10:57:14.000000Z
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : AVC Coding
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #1:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=16275 fps=0.0 q=-1.0 Lsize=  165734kB time=00:08:57.04 bitrate=2528.1kbits/s speed=3.02e+03x
video:165653kB audio:3kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.047347%


  


• 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 :