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• webm_dash_manifest_demuxer : Fix UB in cue timestamp string code and make it actually...

  20 avril 2017, par Derek Buitenhuis

  webm_dash_manifest_demuxer : Fix UB in cue timestamp string code and make it actually work
  Output was apparently not tested for correctness. Passing overlapping
  
  memory to snprintf causes undefined behavior, and usually resulted in
  
  only the very last timestamp being written to metadata, and not a list
  
  at all.
  Signed-off-by : Derek Buitenhuis <derek.buitenhuis@gmail.com>
  

  • [DH] libavformat/matroskadec.c

• avcodec/htmlsubtitles : Check for string truncation and return error

  5 mai 2017, par Michael Niedermayer

  avcodec/htmlsubtitles : Check for string truncation and return error
  Fixes out of array access
  
  Fixes : 1354/clusterfuzz-testcase-minimized-5520132195483648
  Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/htmlsubtitles.c
  • [DH] libavcodec/htmlsubtitles.h

• FFMPEG set -ss and -to with string

  12 mai 2017, par NewUser

  I know I can set the start with -ss and end with -to but can someone please help me to format the following so that I can enter the -ss and -to with a string ?

  I want -ss to come from

  String start = editStart.getText().toString();

  and -to to come from

  String end = editEnd.getText().toString();

  Here is my ffmpeg string I want to edit, I have entered -ss and -to to show where I want the above strings to be.

  String s = "-i" + " " + mVideoUri.toString().replace("file:///", "") + " -i " + newBackgroundBitmap.getPath() +  " -filter_complex [1:v][0:v]scale2ref=iw:ih[ovr][base];[ovr]colorchannelmixer=aa=0.7[ovrl];[base][ovrl]overlay[v] -ss -to -map [v] -c:v libx264 -preset ultrafast " + directoryToStore + "/" + FileName + mp4;
  
  
  
  String[] arguments = s.split(" ");
  
  
  
  ExecuteFFMPEG(arguments);

  ---

  EDIT

  Here is the full ffmpeg

  //Button onclick
  
  public void onButtonClicked(View view) {
  
      switch (view.getId()) {
  
  
  
      //WHEN THE EXPORT BUTTON IS CLICKED
  
      case Export:
  
          String s = "-i" + " " + mVideoUri.toString() + " -i " + newBackgroundBitmap.getPath() + " -filter_complex [1:v][0:v]scale2ref=iw:ih[ovr][base];[ovr]colorchannelmixer=aa=0.7[ovrl];[base][ovrl]overlay[v] -map [v] -c:v libx264 -preset ultrafast " + directoryToStore + "/" + lastSaved + mp;
  
          String[] arguments = s.split(" ");
  
          ExecuteFFMPEG(arguments);
  
  
  
      }
  
  }
  
  
  
  //Added onLoad FFMPEG
  
  public void LoadFFMPEG() {
  
  
  
      FFmpeg ffmpeg = FFmpeg.getInstance(getBaseContext());
  
      try {
  
          ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
  
  
  
              @Override
  
              public void onStart() {
  
                  super.onStart();
  
  
  
              }
  
  
  
              @Override
  
              public void onFailure() {
  
                  super.onFailure();
  
              }
  
  
  
              @Override
  
              public void onSuccess() {
  
                  super.onSuccess();
  
  
  
              }
  
  
  
              @Override
  
              public void onFinish() {
  
                  super.onFinish();
  
              }
  
          });
  
      } catch (FFmpegNotSupportedException e1) {
  
          e1.printStackTrace();
  
          Log.d("[FFMPEGMain Exception]-", e1.toString());
  
      }
  
  }
  
  
  
  //Added Exceute FFMPEG
  
  public void ExecuteFFMPEG(String[] command) {
  
  
  
  
  
      FFmpeg ffmpeg = FFmpeg.getInstance(getBaseContext());
  
      try {
  
  
  
          ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
  
  
  
              @Override
  
              public void onStart() {
  
                  super.onStart();
  
                  Log.d("[Start]", "start");
  
  
  
              }
  
  
  
              @Override
  
              public void onProgress(String message) {
  
                  Log.d("[Progress]", message);
  
              }
  
  
  
              @Override
  
              public void onFailure(String message) {
  
                  Log.d("[fail]", message);
  
              }
  
  
  
              @Override
  
              public void onSuccess(String message) {
  
                  Log.d("[Success]", message);
  
  
  
  
  
              }
  
  
  
  
  
              @Override
  
              public void onFinish() {
  
                  super.onFinish();
  
                  Log.d("[Finish]", "file output done");
  
  
  
              }
  
  
  
          });
  
      } catch (FFmpegCommandAlreadyRunningException e) {
  
          // Handle if FFmpeg is already running
  
          Log.d("[FFMPEG Exception]-", e.toString());
  
  
  
      }
  
  
  
  
  
  }

  The above works perfectly as I was hoping. Now I want to set the start and end of the video (depending on the position the user selected). I get the start and end of the video back as a string, like this :

  String valueRight = formatter.format(getValueRight);
  
  String valueLeft = formatter.format(getValueLeft);
  
  
  
  //this strings will return 00:00:00.000 DEPENDING on the position from the user
  
  //just like when you would normally call -ss 00:00:50.849 -to 00:02:05.100

  As I mentioned above that I know it should be set as -ss and -to but I am looking for a wat to format my string to enter -ss and -to with a string, somthing like this :

  -ss valueLeft -to valueRight

  ---