不规则图片挖空区域放一个视频。

            Bitmap bitmapDrawComb = Bitmap.createBitmap(bgBitmap.getWidth(), bgBitmap.getHeight(), bgBitmap.getConfig());

            Canvas canvas = new Canvas(bitmapDrawComb);
            Paint paint = new Paint();
            //绘制背景图层
            if (bgBitmap != null) {
                canvas.drawBitmap(bgBitmap, new Matrix(), paint);
            }
            if (bitmapVideoFrame != null) {
                //绘制视频图层
                int leftMargin = ((FrameLayout.LayoutParams) videoPosterContainer.getLayoutParams()).leftMargin;
                int topMargin = ((FrameLayout.LayoutParams) videoPosterContainer.getLayoutParams()).topMargin;
                canvas.drawBitmap(bitmapVideoFrame, leftMargin, topMargin, paint);
                //绘制视频覆盖区域透明图层解决某问题

                //防止图层为空的处理start
                if (mModel.getVideoframes() == 1) {
                    Bitmap bitmapTransVideoExtra = referenceVideoExtraTransCover.get();
                    if (bitmapTransVideoExtra == null || bitmapTransVideoExtra.isRecycled()) {
                        bitmapTransVideoExtra = getPosterBgBitmap();
                        referenceVideoExtraTransCover = new WeakReference<Bitmap>(bitmapTransVideoExtra);
                    } else {

                    }
                    //只裁剪视频插入方块区域 解决不规则图形区域问题
                    int cropHeight = videoPosterContainer.getHeight();
                    int cropLeft = leftMargin;
                    int cropWidth = videoPosterContainer.getWidth();
                    int cropTop = topMargin;
                    //绘制背景
                    Bitmap bitmap = Bitmap.createBitmap(bitmapTransVideoExtra, cropLeft, cropTop, cropWidth, cropHeight);
                    canvas.drawBitmap(bitmap, cropLeft, cropTop, paint);
                    //模拟测试
            /*    if (BuildConfig.DEBUG) {
                    Rect rect = new Rect(cropLeft, cropTop, cropLeft + cropWidth, cropHeight + cropTop);
                    paint.setColor(Color.RED);
                    canvas.drawRect(rect, paint);
                }*/
//                canvas.drawBitmap(bitmapTransVideoExtra, desc, desc, paint);
                    //解决不规则图形区域结束


                }
                if (isNeedDrawText) {

                    dynamicDrawText(canvas, paint);
                }


            }

方法就是截屏，但是没有挖空区域的，那么绘制了视频帧图之后再把视频帧图的区域等大高宽的 同等图片背景抠出来再盖上去，上面是具体代码。