问题描述
我应该开发一个应用程序，记录和播放录制的视频，而录制继续（不停止图）。我知道如何使用和开发使用DirectShow，但我需要我的图形的架构。我应该使用哪些过滤器？
I should develop an application that records and plays recorded video while recording continues (without stopping graph). I know how to use and develop using DirectShow but I need architecture of my graph. What filters should I use?
我使用DirectShow和但我应该压缩视频，我不知道如何在压缩视频文件（这不是
I did it with raw video using DirectShow and SampleGrabber but I should compress video and I have no idea how to do it in compressed video file (which is not closed, because recording continues).
我认为MPEG-2录音对我的应用程序是最好的，但请指导我应该使用的过滤器。
I think MPEG-2 recording is the best for my application but please guide me about filters I should use.
谢谢
推荐答案
您尝试过？
记录文件并同时观看它是有点问题，因为Demuxer需要重新编译写入的文件，以了解新的部件。我从来没有见过这样的分配器。
Recording a file and watching it at the same time is a little bit problematic, because the Demuxer needs to reparse the written file, to know about the new parts. I have never seen an demuxer doing this.
另一个大问题是文件锁定！ DirectShow文件写入器和大多数其他类似的过滤器锁定文件进行写入。因此没有其他进程可以打开该文件进行读取。
The other big problem is the file-locking! The DirectShow filewriter and most other similar filters lock the file for the writing. So no other process can open the file for reading.
您正在搜索TimeShift系统。这里有一些thirt-party SDK。但它也可以用自己的DirectShow过滤器实现，但你需要很多的时间和知识为此。我知道这是可能的，因为我在我公司的视频播放器（）。
You are searching for a TimeShift system. There are some thirt-party SDK for this. But it can also be implemented with own DirectShow Filters, but you will need a lot of time and knowledge for this. I know it's possible because I have done it in the videoplayer from my company (utilius fairplay 5).
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