视频压缩后文件大小没有变化

[pz-bottle]

下面的是我的压缩代码
new Mp4Composer(videoPath, destPath)
// .rotation(Rotation.ROTATION_90)
// .size((width) 540, (height) 960)
// .fillMode(FillMode.PRESERVE_ASPECT_FIT)
// .filter(new GlFilterGroup(new GlMonochromeFilter(), new GlVignetteFilter()))
// .trim((trimStartMs) 200, (trimEndMs) 5000)
.listener(new Mp4Composer.Listener() {
@OverRide
public void onProgress(double progress) {
Log.d(TAG, "onProgress = " + progress);
}

                    @Override
                    public void onCurrentWrittenVideoTime(long timeUs) {

                    }

                    @Override
                    public void onCompleted() {
                        Log.d(TAG, "onCompleted()");
                        runOnUiThread(() -> {
                            ProDismiss();
                            File file = new File(destPath);
                            if(file!=null){
                                videoFile = file;
                                isComposerSuccess = true;
                            }
                        });
                    }

                    @Override
                    public void onCanceled() {
                        Log.d(TAG, "onCanceled");
                        runOnUiThread(() -> {
                            ProDismiss();
                            isComposerSuccess = false;
                        });
                    }

                    @Override
                    public void onFailed(Exception exception) {
                        Log.e(TAG, "onFailed()", exception);
                        runOnUiThread(() -> {
                            ProDismiss();
                            isComposerSuccess = false;
                        });
                    }
                }).start();

压缩前的大小为8.5M，压缩后的视频大小还是8.5M。。。就很纳闷