我正在尝试使用androoid studio中的FFmpeg lib在视频上添加文本和图像

import wseemann.media.FFmpegMediaMetadataRetriever;

public class MainActivity extends AppCompatActivity {

    private static final String INPUT_VIDEO_PATH = "/path/to/input/video.mp4";
    private static final String OUTPUT_VIDEO_PATH = "/path/to/output/video.mp4";
    private static final String TEXT = "Hello, World!";
    private static final String IMAGE_PATH = "/path/to/image.png";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        FFmpegMediaMetadataRetriever retriever = new FFmpegMediaMetadataRetriever();
        retriever.setDataSource(INPUT_VIDEO_PATH);

        String duration = retriever.extractMetadata(FFmpegMediaMetadataRetriever.METADATA_KEY_DURATION);
        int videoDuration = Integer.parseInt(duration);

        // Calculate the position to add text and image
        int position = videoDuration / 2; // Add at half of the video duration

        String command = "-i " + INPUT_VIDEO_PATH +
                " -vf \"drawtext=text='" + TEXT + "':fontfile=/path/to/font.ttf:fontsize=24:fontcolor=white:x=(w-text_w)/2:y=(h-text_h)/2" +
                ",overlay=x=(main_w-overlay_w)/2:y=(main_h-overlay_h)/2\" " +
                "-i " + IMAGE_PATH + " -filter_complex \"[1:v]scale=100:100[ovrl],[0:v][ovrl]overlay=10:10\" " +
                OUTPUT_VIDEO_PATH;

        // Execute FFmpeg command
        FFmpeg.execute(command, new ExecuteBinaryResponseHandler() {
            @Override
            public void onSuccess(String message) {
                // Video processing is successful
                Log.d("FFmpeg", "onSuccess: " + message);
            }

            @Override
            public void onFailure(String message) {
                // Video processing failed
                Log.e("FFmpeg", "onFailure: " + message);
            }
        });

        retriever.release();
    }
}