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原始H264为JPEG，在C＃中

[英]Raw H264 to JPEG, in C#

原文 2016-03-18 09:08:25 2 1 c#/ ffmpeg/ jpeg/ h.264

I get a stream of frames, an initial SPS and PPS h264 data packet and then packets for the I and P frames. 我得到一个帧流，一个初始SPS和PPS h264数据包，然后是I帧和P帧的数据包。

Using c# .NET I want to convert into a series of JPEGs? 我想使用c＃.NET转换为一系列JPEG吗？ Has anyone done this? 有没有人这样做过？ I have tried AForge.NET FFMpeg wrapper, but can only go from MP4 file to JPEGs? 我试过AForge.NET FFMpeg包装器，但只能从MP4文件转到JPEGs？ Also looked at DirectShow. 还看了看DirectShow。

I can't seem to find an examples that even come close to doing this? 我似乎找不到一个甚至可以做到这一点的例子？

Thanks 谢谢

1 个解决方案

In Directshow, it sounds like you need to introduce a SampleGrabber filter into your filter graph. 在Directshow中，您需要在过滤器图形中引入SampleGrabber过滤器。 Insert this after the H264 decoder. 将此插入到H264解码器之后。

This is a pass through filter which can receive a callback containing each video frame. 这是一个直通过滤器，可以接收包含每个视频帧的回调。 You can then obviously choose what you do with the frame, is save it to disk as a jpeg etc. 然后，您显然可以选择对框架进行的操作，将其保存为jpeg等格式的磁盘。

Rather than regurgitate MSDN, there is a great page explaining its usage here: 而不是反刍MSDN，有一个很好的页面解释它的用法：

https://msdn.microsoft.com/en-us/library/windows/desktop/dd407288(v=vs.85).aspx https://msdn.microsoft.com/en-us/library/windows/desktop/dd407288(v=vs.85).aspx

Update taking account of Roman's comments: 更新考虑到罗马的评论：

SampleGrabber is deprecated as its part of Directshow Editing Services. SampleGrabber已被弃用为Directshow编辑服务的一部分。 However, it is quite self contained. 但是，它是完全独立的。 If it was removed from a later version of Windows it would be straight forward to replace with an alternative filter. 如果从更高版本的Windows中删除了它，则可以直接替换为其他过滤器。 I still use it in one of my consumer applications. 我仍然在我的一个消费者应用程序中使用它。 Roman is correct though - it has a steep learning curve. 罗马是正确的 - 它有一个陡峭的学习曲线。