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• how to use ffmpeg video compression in android [on hold]

  6 février 2017, par Muhammed Fayaz

  As am trying to compress a video in android mobile. I got the techniques about ffmpeg, but am not able to fix this as am first in android developing. So anyone please help me to use ffmpeg in android

• FFMPEG Webvtt m3u8 download into single vtt file, ignore the "X-TIMESTAMP-MAP=MPEGTS=" (timestamp sync problem)

  5 janvier 2021, par Panda Xia

  I want to download the subtitle of a video, it has separated m3u8 file for subtitle :

  


  webvtt source in m3u8 format : https://sdn-global-streaming-cache.3qsdn.com/9378/files/19/05/1199332/Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes.ism/Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000.m3u8

  


  looks like :

  


  #EXTM3U
#EXT-X-VERSION:4
## Created with Unified Streaming Platform(version=1.9.5)
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-MEDIA-SEQUENCE:1
#EXT-X-INDEPENDENT-SEGMENTS
#EXT-X-TARGETDURATION:989
#USP-X-TIMESTAMP-MAP:MPEGTS=900000,LOCAL=1970-01-01T00:00:00Z
#EXTINF:24.72, no desc
Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000-1.webvtt
#EXTINF:2.56, no desc
Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000-13.webvtt
#EXTINF:50.88, no desc
Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000-14.webvtt
#EXTINF:3.079, no desc
Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000-40.webvtt
#EXTINF:60.401, no desc
....


  


  Then use the command to download the multiple webvtts into one vtt file "EN.vtt" :

  


  ffmpeg -i  "https://sdn-global-streaming-cache.3qsdn.com/9378/files/19/05/1199332/Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes.ism/Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000.m3u8"  "DE.vtt"


  


  In output "DE.vtt" the X-TIMESTAMP-MAP=MPEGTS:xxxxxx,LOCAL:00:00:00.000 from each webvtt file (webvtt in m3u8) are ignored.

  


  so that the time Synchronisation is broken, the start time of each Segment always begins from 00:00:00, looks like :

  


  WEBVTT

00:00.000 --> 00:02.560
So viel Macht.

00:00.000 --> 00:03.079
Was er sagte.

00:00.000 --> 00:04.680
oder
die Schönheit

00:00.000 --> 00:01.440
Er sagte immer:

00:00.000 --> 00:03.840
Auf seinen Klang 

00:00.000 --> 00:07.519
Seine Paranoia.


  


  Could ffmpeg support the relative time stamp to convert into absolute time stamp ?
Or use other method to download perfect webvvt file ?

  


• IOException when trying to run ffmpeg command on Android

  20 avril 2020, par Rashid Faheem

  I am using this library through gradle with Android Studio 3.6.

  



  implementation 'com.github.hiteshsondhi88.libffmpeg:FFmpegAndroid:0.2.5'


  



  This is path of input and output file.

  



  String VideoIn = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Download/Ab.mp4";
String VideoOut = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Download/Ab1.avi";


  



  This is code where I load ffmpeg and try to execute command to convert an mp4 into avi. (Same command i use on windows to do this task). But it say IOException (No such file or directory) although input file is present in Download folder.

  



  private void convert(String VideoIn, String VideoOut) {
    ffmpeg = FFmpeg.getInstance(this);
    try {
        ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
            @Override
            public void onFailure() {
                super.onFailure();
            }

            @Override
            public void onSuccess() {
                super.onSuccess();
            }

            @Override
            public void onStart() {
                super.onStart();
            }

            @Override
            public void onFinish() {
                super.onFinish();
            }
        });
    } catch (FFmpegNotSupportedException e) {
        Log.e(TAG, e.getMessage());
    }

    try {
        ffmpeg.execute("-i " + VideoIn + " " + VideoOut, new ExecuteBinaryResponseHandler() {
            @Override
            public void onSuccess(String message) {
                Log.e(TAG, message);
            }

            @Override
            public void onProgress(String message) {
                Log.e(TAG, message);
            }

            @Override
            public void onFailure(String message) {
                Log.e(TAG, message);
            }

            @Override
            public void onStart() {
                Log.e(TAG, "onStart called");
            }

            @Override
            public void onFinish() {
                Log.e(TAG, "onFinish called");
            }
        });
    } catch (FFmpegCommandAlreadyRunningException ex) {
        Log.e(TAG, ex.getMessage());
    }
}


  



  Here is log data for your to understand. I am not that expert in that so I couldn't figure out what is wrong with my code. Path is correct and file is there. Maybe I am calling this command wrong or what ?

  



  I searched google and stack overflow much but nothing helped me solve it. Any help would be appreciated.

  



  04-20 12:08:26.050 12696-12696/com.example.myapplication E/Video to Mp3: Input File Path: 
/storage/emulated/0/Download/Ab.mp4
04-20 12:08:26.050 12696-12696/com.example.myapplication E/Video to Mp3: Output File Path: 
/storage/emulated/0/Download/Ab1.avi
04-20 12:08:26.050 12696-12696/com.example.myapplication E/Video to Mp3: Device not supported
04-20 12:08:26.050 12696-12696/com.example.myapplication E/Video to Mp3: onStart called
04-20 12:08:26.084 12696-13027/com.example.myapplication E/FFmpeg: Exception while trying to run: 
/data/user/0/com.example.myapplication/files/ffmpeg -i /storage/emulated/0/Download/Ab.mp4 
/storage/emulated/0/Download/Ab1.avi
java.io.IOException: Error running exec(). Command: [/data/user/0/com.example.myapplication/files/ffmpeg, -i, /storage/emulated/0/Download/Ab.mp4, /storage/emulated/0/Download/Ab1.avi] Working Directory: null Environment: null
    at java.lang.ProcessManager.exec(ProcessManager.java:211)
    at java.lang.Runtime.exec(Runtime.java:186)
    at java.lang.Runtime.exec(Runtime.java:259)
    at java.lang.Runtime.exec(Runtime.java:202)
    at com.github.hiteshsondhi88.libffmpeg.ShellCommand.run(ShellCommand.java:10)
    at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:38)
    at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:10)
    at android.os.AsyncTask$2.call(AsyncTask.java:307)
    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:246)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
    at java.lang.Thread.run(Thread.java:833)
 Caused by: java.io.IOException: No such file or directory
    at java.lang.ProcessManager.exec(Native Method)
    at java.lang.ProcessManager.exec(ProcessManager.java:209)
    at java.lang.Runtime.exec(Runtime.java:186) 
    at java.lang.Runtime.exec(Runtime.java:259) 
    at java.lang.Runtime.exec(Runtime.java:202) 
    at com.github.hiteshsondhi88.libffmpeg.ShellCommand.run(ShellCommand.java:10) 
    at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:38) 
    at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:10) 
    at android.os.AsyncTask$2.call(AsyncTask.java:307) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:246) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
    at java.lang.Thread.run(Thread.java:833) 
04-20 12:08:26.084 12696-12696/com.example.myapplication E/Video to Mp3: onFinish called