How to position image that added as overlay on video using ffmpeg_kit_flutter

Question

i am trying to overlay image on video using ffmpeg_kit_flutter with the follwoing command

paths

  String imagePath = '/data/user/0/com.example.myapp/cache/file_picker/Screenshot_20220902-172941.png';
  String videoPath = '/data/user/0/com.example.myapp/cache/file_picker/VID_20220824_081521.mp4';
  String outPutPath = '/storage/emulated/0/Download/aoaosdf.mp4';

command

String comand = '-i $videoPath -i $imagePath -filter_complex overlay=10:10 -codec:a copy $outPutPath';

execute

FFmpegKit.execute(comand).then((session) async {
    
          final returnCode = await session.getReturnCode();
    
          if (ReturnCode.isSuccess(returnCode)) {
    
            log.log('SUCCESS');
    
          } else if (ReturnCode.isCancel(returnCode)) {
    
            log.log('CANCEL');
    
          } else {
    
            log.log('ERROR');
    
          }
    
        });

results

the image completely covered the video

Qiestion

How can i control the size, position the image ?

does ffmpeg_kit_flutter support it ? and How? any command?