使用多个实例 VMR 9 的黑色视频 [英] Black video using multiple instances VMR 9

问题描述

我正在创建一个类似应用程序的视频墙.该应用程序创建多个窗口来显示视频，每个窗口都有自己的过滤器图.在典型配置中，这些窗口将分布在两个显示器上，总共 12 个窗口.

I am working on creating a video wall like application. The application creates multiple windows to display video and each window has its own filter graph. In a typical configuration, these windows would be spread over two displays for a total of 12 windows.

但问题是每当我尝试运行该应用程序时，一些窗口都会显示黑色视频.没有崩溃，每个图形都正确呈现而不会引发任何错误.显示黑色视频的窗口是随机的.

But the problem is whenever I try to run the application, a few of the windows display black video. There are no crashes and each graph is rendered correctly without throwing any errors. The windows displaying the black video are random.

我已经在两种不同的显卡上进行了测试，结果相似.

I have tested this on two different graphics card with similar results.

有人可以帮忙找出问题吗

Can someone please help identify the issue

推荐答案

VMR9s/EVR 由有限的资源支持，您正在达到极限.没有明显的错误代码或其他众所周知/可靠的方法来检测您是否遇到了麻烦.

VMR9s/EVRs are backed by limited resource, you are hitting the limit. There is no distinctive error code or otherwise well known/reliable way to detect that you are in trouble.

您的解决方法是实现自定义分配器/展示器来管理表面，或者改用 VMR7.

Your workaround is to either implement custom allocator/presenter to manage surfaces, or use VMR7 instead.

另见:

• StressEvr:那么，您可以做多少次 EVR?工具/测试平台，查看您可以在特定分辨率和像素格式下创建多少个实例，VMR7/EVR

• StressEvr: So, how many EVRs you can do? with a small tool/testbed to see how many instances you can create, VMR7/EVR, at specific resolutions and pixel formats

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