How to copy video from external storage to internal storage in SDK version 33?

Question

I have a video picker and when the users picks the video, I want to copy it into the internal files folder and modify it. Is it possible? how?

If not, where can I store the video so the user can't access it (as I'm going to modify it and I don't want him to be able to access the modified video)

video picker handled by this code:

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.setType("video/*");
    String[] mimeTypes = {"video/mp4", "video/3gp", "video/mpeg"};
    intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
    activity.startActivityForResult(intent, REQUEST_CODE_VIDEO_PICKER);

Then, its result:

Uri videoUri = data.getData();

I'm trying to copy the file using:

uriSrc = "content://com.android.providers.media.documents/document/video%3A1000099794"

destPath = getFilesDir() + "/video.mp4";

public static boolean copyFileToInternalStorage(Context context, Uri uriSrc, String destPath) {
    try {
        //InputStream inputStream = context.getContentResolver().openInputStream(uriSrc);
        //File tempFile = File.createTempFile("video", ".mp4", context.getCacheDir());
        //FileOutputStream outputStream = new FileOutputStream(tempFile);

        //byte[] buffer = new byte[1024];
        //int read;
        //while ((read = inputStream.read(buffer)) != -1) {
        //    outputStream.write(buffer, 0, read);
        //}
        //outputStream.close();

        InputStream fileInputStream= context.getContentResolver().openInputStream(uriSrc);

        FileOutputStream outputStreamInternal = new FileOutputStream(destPath);
        byte[] buffer2 = new byte[1024];
        int length;
        while ((length = fileInputStream.read(buffer2)) > 0) {
            outputStreamInternal.write(buffer2, 0, length);
        }
        fileInputStream.close();
        outputStreamInternal.close();
    }
    catch (Exception e) {
        Log.d("file_log", "exception when copying the src file to the internal storage: " + e.getMessage());
    }
    return new File(destPath).exists();
}

it copies the video to internal but without audio.