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• Android Merging two video with different (sizes,codec,frames,aspect raito) using FFMPEG

  6 septembre 2017, par Alok Kumar Verma

  I’m making an app which merges two or more than two video files which I’m getting from another activity. After choosing the files we pass the files to another activity where the merging happens. I’ve followed this link to do the same : AndroidWarZone FFMPEG

  Here I found the way on how to merge the two files only with different qualities. The command is given below :

  String[] complexCommand = {"ffmpeg","-y","-i","/storage/emulated/0/videokit/sample.mp4",
  
  "-i","/storage/emulated/0/videokit/in.mp4","-strict","experimental",
  
  "-filter_complex",
  
  "[0:v]scale=640x480,setsar=1:1[v0];[1:v]scale=640x480,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1",
  
  "-ab","48000","-ac","2","-ar","22050","-s","640x480","-r","30","-vcodec","mpeg4","-b","2097k","/storage/emulated/0/vk2_out/out.mp4"}

  Since I have a list of selected videos inside my array which I’m passing to the next page, I’ve done some changes in my command, like this :

  private void mergeVideos() {
  
      String savingPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/video.mp4";
  
  
  
      ArrayList<file> fileList = mList;
  
  
  
      List<string> filenames = new ArrayList<string>();
  
  
  
      for (int i = 0; i &lt; fileList.size(); i++) {
  
          filenames.add("-i");
  
          filenames.add(fileList.get(i).toString());
  
      }
  
  
  
      Log.e("Log===",filenames.toString());
  
  
  
      String joined = TextUtils.join(", ",filenames);
  
  
  
      Log.e("Joined====",joined);
  
  
  
      String complexCommand[] = {"-y", joined,
  
              "-filter_complex",
  
              "[0:v]scale=640x480,setsar=1:1[v0];[1:v]scale=640x480,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1",
  
              "-ab","48000","-ac","2","-ar","22050","-s","640x480","-r","30","-vcodec","mpeg4","-b","2097k", savingPath};
  
      Log.e("RESULT====",Arrays.toString(complexCommand));
  
  
  
     execFFmpegBinary(complexCommand);  }
  
  </string></string></file>

  In the log this is the the output I’m getting :

  This one is for received data which I have added in the mList

  E/RECEIVED DATA=====: [/mnt/m_external_sd/DCIM/Camera/VID_31610130_011933_454.mp4, /mnt/m_external_sd/DCIM/Camera/VID_23120824_054526_878.mp4]
  
  E/RESULT====: [-y, -i, /mnt/m_external_sd/DCIM/Camera/VID_31610130_011933_454.mp4, -i, /mnt/m_external_sd/DCIM/Camera/VID_23120824_054526_878.mp4, -filter_complex, [0:v]scale=640x480,setsar=1:1[v0];[1:v]scale=640x480,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1, -ab, 48000, -ac, 2, -ar, 22050, -s, 640x480, -r, 30, -vcodec, mpeg4, -b, 2097k, /storage/emulated/0/video.mp4]

  Here result is the complexCommand that is going inside the exeFFMPEGBinary() but not working.

  This is my exceFFMPEGBinary()

  private void execFFmpegBinary(final String[] combine) {
  
      try{
  
      fFmpeg.execute(combine, new ExecuteBinaryResponseHandler() {
  
          @Override
  
          public void onFailure(String s) {
  
              Log.d("", "FAILED with output : " + s);
  
          }
  
  
  
          @Override
  
          public void onSuccess(String s) {
  
              Log.d("", "SUCCESS with output : " + s);
  
              Toast.makeText(getApplicationContext(),"Success!",Toast.LENGTH_SHORT)
  
                      .show();
  
          }
  
  
  
          @Override
  
          public void onProgress(String s) {
  
              Log.d("", "progress : " + s);
  
          }
  
  
  
          @Override
  
          public void onStart() {
  
              progressDialog.setMessage("Processing...");
  
              progressDialog.show();
  
          }
  
  
  
          @Override
  
          public void onFinish() {
  
              progressDialog.dismiss();
  
          }
  
      });
  
  } catch (FFmpegCommandAlreadyRunningException e) {
  
      // do nothing for now
  
  }
  
  }

  I’ve done this and run my project, now the problem is it is not merging/concatenating anything, just a progressDialog comes up for a fraction of second and all I’m getting is this in my log :

  E/FFMPEG====: ffmpef : coorect loaded

  This means that ffmpeg is loading and nothing is getting implemented. I don’t get any log for onFailur, onSuccess(), onStart().

  Any suggestions would help me achieve my goal. Thanks.

  Note : I have done this merging with the use of Mp4Parser but there is a glitch inside it, it requires the file with same specification. So this is not my requirement.

  EDITS

  I did some more research and got this to concatenate, but this is not working either, here is the link : Concatenating two files

  I’ve found this stuff also from a link : FFMPEG Merging/Concatenating
  and found that his piece of code is working fine. But not mine.

  I’ve used that command also but it is not working nor giving me any log results. Except the FFMPEG Loading.

  Here is the command :

  complexCommand = new String[]{"-y", "-i", file1.toString(), "-i", file2.toString(), "-strict", "experimental", "-filter_complex",
  
              "[0:v]scale=1920x1080,setsar=1:1[v0];[1:v] scale=iw*min(1920/iw\\,1080/ih):ih*min(1920/iw\\,1080/ih), pad=1920:1080:(1920-iw*min(1920/iw\\,1080/ih))/2:(1080-ih*min(1920/iw\\,1080/ih))/2,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1","-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "1920x1080", "-vcodec", "libx264","-crf","27","-q","4","-preset", "ultrafast", rootPath + "/output.mp4"};

• How you can use the Piwik AOM plugin to improve your data and make better online marketing decisions

  13 septembre 2017, par André Kolell — Plugins, AdWords, Bing, Case Study, Criteo, eccommerce tracking, Facebook Ads, how to install piwik analytics, how-to piwik, integration, piwik, Taboola

  Hi, this is André, one of the authors of the Piwik Advanced Online Marketing plugin, which has just hit 5,000 downloads on the Piwik marketplace. In this blog post I’ll show you how Piwik AOM improves your data and enables you to make better online marketing decisions.

  Piwik itself is excellent in tracking all kinds of visitor data, like where a visitor is coming from and what he’s doing on your page or app (pageviews, events, conversions). But what Piwik did not yet take a closer a look at, is how much you’ve invested into your marketing activities and how profitable they are.

  With the Piwik AOM plugin you can integrate data like advertising costs, advertising campaign names, ad impressions etc. from advertising platforms (such as Google AdWords, Microsoft Bing, Criteo, Facebook Ads and Taboola) and individual campaigns (such as such as cost per view/click/acquisition and fixed price per months deals) into Piwik and combine that data with individual Piwik visits.

  Piwik AOM adds a new marketing performance report to Piwik giving you a great overview of all your marketing activities with drill-down functionality :

  

   

  When taking a look at a specific visitor, Piwik AOM shows you the exact cost of acquiring a specific visit :

  

   

  Leveraging Piwik AOM’s full potential

  But although you can access Piwik AOM’s valuable data directly in the Piwik UI for ad-hoc analyses, Piwik AOM’s true strength comes into play when working with the raw data in an external business intelligence application of your choice, where you can further integrate Piwik AOM’s data with your most accurate backend data (like conversion’s contribution margins after returns, new vs. existing customer, etc.).

  Piwik AOM offers some API endpoints that allow you to fetch the data you need but you can also retrieve it directly from Piwik AOM’s aom_visits table, which includes all visits, all allocated advertising costs and advertising campaign details. As there is never data being deleted from aom_visits, the table can easily be connected to your ETL tool with its last update timestamp column. A third way to get data out of Piwik AOM is by developing your own Piwik plugin and listening to the AOM.aomVisitAddedOrUpdated event, which is posted whenever an aom_visits record is added or updated.

  Integrating Piwik AOM’s data with your backend data in the business intelligence application of your choice allows you to evaluate the real performance of your online marketing campaigns when applying different conversion attribution models, conduct customer journey analyses, create sophisticated forecasts and whatever you can think of.

  AOM Use case

  A company that followed this approach, is FINANZCHECK.de, one of Germany’s leading loan comparison websites. At the eMetrics summit 2016 in Berlin, Germany, I gave a talk about FINANZCHECK’s architectural online marketing setup. Until recently, FINANZCHECK used Pentaho data integration to integrate data from Piwik, Piwik AOM and additional internal tools like its proprietary CRM software into Jaspersoft, its data warehouse an BI solution. The enriched data in Jaspersoft was not only used for reporting to various stakeholders but also for optimising all kinds of marketing activities (e.g. bids for individual keywords in Google AdWords) and proactive alerting. Not long ago, FINANZCHECK started an initiative to improve its setup even further – I’ll hopefully be able to cover this in a more detailed case study soon.

  Roadmap

  In the past, we had the chance to make great progress in developing this plugin by solving specific requirements of different companies who use Piwik AOM. During the next months, we plan to integrate more advertising platforms, reimplement Facebook Ads, improve the support of individual campaigns and work on the general plugin stability and performance.

  Before you install Piwik AOM

  Before installing Piwik AOM, you should know that its initial setup and even its maintenance can be quite complex. Piwik AOM will heavily modify your Piwik installation and you will only benefit from Piwik AOM if you are willing to invest quite some time into it.

  If you are not familiar with Piwik’s internals, PHP, MySQL, database backups, cronjobs, creating API accounts at the advertising platforms or adding parameters to your advertising campaign’s URLs, you should probably not install it on your own (at least not in your production environment).

  Piwik AOM has successfully been tested with up to 25k visitors a day for a period of more than two years, running on an AWS server with 4 GB RAM, once CPU and a separate AWS RDS MySQL database.

  Ideas and Support

  If you have ideas for new features or need support with your Piwik AOM installation or leveraging your marketing data’s potential in general, feel free to get in touch with the plugin’s co-author Daniel or me. You can find our contact details on the plugin’s website http://www.advanced-online-marketing.com.

  How to get the Piwik AOM plugin ?

  The Piwik AOM plugin is freely available through the Piwik marketplace at https://plugins.piwik.org/AOM

  Did you like this article ? If yes do not hesitate to share it or give your feedback about the topic you would like us to write about.

• Merging multichannel audio tracks from Mumble with ffmpeg

  21 septembre 2017, par Nutela

  We record talks through Mumble and because Mumble has a nitfy multichannel feature I’d figured we could get subtitles from YouTube by uploading each track to YouTube separately with for file in *; do ffmpeg -loop 1 -r 2 -i "$img" -i "$file" -vf scale=-1:380 -c:v libx264 -preset slow -tune stillimage -crf 18 -c:a copy -shortest -pix_fmt yuv420p -threads 0 "$file".mkv; done I then can prepend with a eg. a sed shell script a nickname for each speaker in the automatic captions i.e. subtitles from YouTube. Works like a charm.

  But merging those tracks with ffmpeg gets tricky. I use ffmpeg -i input1.ogg -input2.ogg -i input3.ogg -i input4.ogg -input5.ogg -filter_complex "[0:a][1:a][2:a][3:a][4:a] amerge=inputs=5[aout]" -map "[aout]" -ac 2 output.ogg

  Somehow ffmpeg shortens the resulting audio track and I don’t yet have an idea why. I tried using the longest first and last since including silent tracks made even a shorter mixdown. Here are the warnings :

  [Parsed_amerge_0 @ 0x7f8b29f02d20] No channel layout for input 1

  [Parsed_amerge_0 @ 0x7f8b29f02d20] Input channel layouts overlap : output layout will be determined by the number of distinct input channels

  But it says

  [Parsed_amerge_0 @ 0x7f8b29f02d20] No channel layout for input 1

  even when I change the order of inputs.

  Allthough according to Mumble’s documentation the tracks should be equal length VLC media info shows different track times. However the tracks are not out of sync just cut off at the end.

  I also have no idea why ffmpeg mentions FLAC, all the files are vorbis.

  ffmpeg -i Mumble-2017-09-09-16-33-18-149.210.187.155-chrisaiki2.ogg -i Mumble-2017-09-09-16-33-18-149.210.187.155-Recorder.ogg -i Mumble-2017-09-09-16-33-18-149.210.187.155-steempowerpics.ogg  -i Mumble-2017-09-09-16-33-18-149.210.187.155-Taconator.ogg  -i Mumble-2017-09-09-16-33-18-149.210.187.155-fuzzynewest.ogg -filter_complex "[0:a][1:a][2:a][3:a][4:a] amerge=inputs=5[aout]" -map "[aout]" -ac 2 output5.ogg

  ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.4 --enable-shared --        enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-  avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-    libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, ogg, from 'Mumble-2017-09-09-16-33-18-149.210.187.155-   chrisaiki2.ogg':
  
    Duration: 00:40:01.19, start: 0.000000, bitrate: 17 kb/s
  
      Stream #0:0: Audio: vorbis, 48000 Hz, mono, fltp, 86 kb/s
  
      Metadata:
  
        ENCODER         : libsndfile
  
        TITLE           : chrisaiki2
  
  Input #1, ogg, from 'Mumble-2017-09-09-16-33-18-149.210.187.155-Recorder.ogg':
  
    Duration: 00:33:57.88, start: 0.000000, bitrate: 1 kb/s
  
      Stream #1:0: Audio: vorbis, 48000 Hz, mono, fltp, 86 kb/s
  
      Metadata:
  
        ENCODER         : libsndfile
  
        TITLE           : Recorder
  
  Input #2, ogg, from 'Mumble-2017-09-09-16-33-18-149.210.187.155-steempowerpics.ogg':
  
    Duration: 00:33:53.93, start: 0.000000, bitrate: 1 kb/s
  
      Stream #2:0: Audio: vorbis, 48000 Hz, mono, fltp, 86 kb/s
  
      Metadata:
  
        ENCODER         : libsndfile
  
        TITLE           : steempowerpics
  
  Input #3, ogg, from 'Mumble-2017-09-09-16-33-18-149.210.187.155-Taconator.ogg':
  
    Duration: 00:35:36.37, start: 0.000000, bitrate: 6 kb/s
  
      Stream #3:0: Audio: vorbis, 48000 Hz, mono, fltp, 86 kb/s
  
      Metadata:
  
        ENCODER         : libsndfile
  
        TITLE           : Taconator
  
  Input #4, ogg, from 'Mumble-2017-09-09-16-33-18-149.210.187.155-fuzzynewest.ogg':
  
    Duration: 00:41:53.23, start: 0.000000, bitrate: 30 kb/s
  
      Stream #4:0: Audio: vorbis, 48000 Hz, mono, fltp, 86 kb/s
  
      Metadata:
  
        ENCODER         : libsndfile
  
        TITLE           : fuzzynewest
  
  File 'output5.ogg' already exists. Overwrite ? [y/N] y
  
  [Parsed_amerge_0 @ 0x7f8b29f02d20] No channel layout for input 1
  
  [Parsed_amerge_0 @ 0x7f8b29f02d20] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
  
  [flac @ 0x7f8b2b005600] encoding as 24 bits-per-sample
  
  Output #0, ogg, to 'output5.ogg':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #0:0: Audio: flac, 48000 Hz, stereo, s32 (24 bit), 128 kb/s (default)
  
      Metadata:
  
        encoder         : Lavc56.60.100 flac
  
  Stream mapping:
  
    Stream #0:0 (vorbis) -> amerge:in0
  
    Stream #1:0 (vorbis) -> amerge:in1
  
    Stream #2:0 (vorbis) -> amerge:in2
  
    Stream #3:0 (vorbis) -> amerge:in3
  
    Stream #4:0 (vorbis) -> amerge:in4
  
    amerge -> Stream #0:0 (flac)
  
  Press [q] to stop, [?] for help
  
  size=  100900kB time=00:33:53.94 bitrate= 406.4kbits/s    
  
  video:0kB audio:100441kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.457024%

  Mumble multichannel talk on reddit