视频记录，并使用DirectShow在同一时间播放 [英] video record and playback at same time using DirectShow

问题描述

我应制定记录和播放录制的视频在记录继续申请（不停止图）。我知道如何使用和使用DirectShow开发，但我需要我的图形架构。我应该使用什么过滤器？

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做了它与原始视频和的 SampleGrabber 但我应该压缩的视频，我不知道怎么做，在压缩视频文件（这是不封闭的，因为记录继续）。

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).

我觉得MPEG-2记录是最适合我的应用程序，但请指导我有关筛选我应该使用。

I think MPEG-2 recording is the best for my application but please guide me about filters I should use.

感谢

推荐答案

您是否尝试过的 StreamBufferEngine ？

录制文件，并在同一时间看这是一个有点问题，因为分路器需要重新分析的书面文件，了解新部件。我从来没有见过一个分流器这样做。

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.

另外一大问题是文件锁定！ DirectShow的FileWriter的和大多数其他类似的过滤器锁定的书面文件。因此，没有其他进程可以打开文件进行读取。

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.

您正在寻找一个时光平移系统。有一些这种thirt方SDK。但它也可以与自己的DirectShow过滤器来实现，但你将需要大量的时间和知识这一点。我知道这是可能的，因为我在录像机做到了由我公司（的 utilius Fairplay的5 ）。

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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