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  • FFmpeg doesn't work on android 10, goes strait to onFailure(String message) with empty message

    18 janvier 2020, par nolanic

    I’m using FFmpeg in one of my projects for video compression. On Android 10 (Google Pixel 3a), it goes straight to onFailure(String message) with empty message for any command sent for execution.

    so I have (api ’com.writingminds:FFmpegAndroid:0.3.2’) specified in my app gradle file,

    permission (android.permission.WRITE_EXTERNAL_STORAGE) in the manifest is specified

    So I do :

    InitializationCallback initializationCallback = new InitializationCallback();
    
    try {
    
        FFmpeg.getInstance(context).loadBinary(initializationCallback);
    
    } catch (FFmpegNotSupportedException e) {
    
        initializationCallback.onFailure();
    
        initializationCallback.onFinish();
    
    }

    Initializes just fine, no problems here.

    Later :

    void getData(File inputFile) {
    
//inputFile points to: /storage/emulated/0/Android/data/{package_name}/files/temp_files/temp_1.mp4
    
        String[] cmd = ("-i " + inputFile.getAbsolutePath()).split(" ");
    
        try {
    
            FFmpeg.getInstance(App.instance).execute(cmd, this);
    
        } catch (FFmpegCommandAlreadyRunningException e) {
    
            throw new Error(e);
    
        }
    
    }
    

    
    @Override
    
    public void onStart() {
    
         //This method is called
    
    }
    

    
    @Override
    
    public void onSuccess(String message) {
    
         //This method is NOT called
    
         extractAvailableData(message);
    
    }
    

    
    @Override
    
    public void onProgress(String message) {
    
        //This method is NOT called
    
        extractAvailableData(message);
    
    }
    

    
    @Override
    
    public void onFailure(String message) {
    
        //This method is called and the message is empty
    
        extractAvailableData(message);
    
    }
    

    
    @Override
    
    public void onFinish() {
    
        //This method is called
    
    }

    If I do something like :

    String command = "-i ***/file1.mp4 -map 0:v -map 0:a -preset ultrafast -s:v 750:350 ***/file2.mp4";
    
//file2.mp4 is a non existent file at this point
    
// (***) --> is just a replacement for the full path of the file, just to keep things shorter here.
    

    
String[] cmd = command.split(" ");
    
        try {
    
            FFmpeg.getInstance(App.instance).execute(cmd, this);
    
        } catch (FFmpegCommandAlreadyRunningException e) {
    
            throw new Error(e);
    
        }

    gives the same result, no video conversion, just a call to onFailure("Nothing")

    Even if I do :

    String[] cmd = {"-version"};
    
        try {
    
            FFmpeg.getInstance(App.instance).execute(cmd, this);
    
        } catch (FFmpegCommandAlreadyRunningException e) {
    
            throw new Error(e);
    
        }

    I get nothing, no output at all.

    I encountered this issue only on Android 10 so far, it works fine on other devices.

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