Directshow Capture（h264编码）和预览
[英]Directshow Capture (h264 encode) and Preview
问题描述
I'm trying to develop a C# application for record and preview real time videos from a directshow device source (USB3HDCAP) with max resolution: 1920x1080. 
我正在尝试开发一个C＃应用程序，用于以最大分辨率：1920x1080记录和预览来自Directshow设备源（USB3HDCAP）的实时视频。
Video must be encoded to H264. 视频必须编码为H264。
I already tried to use C# computer vision frameworks like Aforge and Accord.FFMPEG. 我已经尝试使用Aforge和Accord.FFMPEG之类的C＃计算机视觉框架。 However it doesn't work because encoding is too slow, and then preview gets really delayed. 但是，它不起作用，因为编码太慢，然后预览真正延迟了。
Than, I tried to make a simple directshow graph with graph edit, using FFMPEG tryout encoder or vfw264, and I get the same result: Preview really slow, and image quality not so good. 然后，我尝试使用FFMPEG试用编码器或vfw264通过图形编辑制作一个简单的DirectShow图形，并且得到了相同的结果：预览速度非常慢，并且图像质量不太好。
For the last I tried Leadtools Filter . 对于最后我尝试了Leadtools Filter 。 The result was perfect, no delay, and record quality pretty good. 结果是完美的，没有延迟，并且记录质量还不错。 However Leadtools isn't free. 但是Leadtools不是免费的。
Do you know a better solution? 您知道更好的解决方案吗？
2 个解决方案
解决方案1
0 2018-04-24 18:09:45
Using Intel Media SDK you can made H264 encoder DirectShow filter, in C++. 使用Intel Media SDK，您可以使用C ++制作H264编码器DirectShow过滤器。
Also you can check openH264 project. 您也可以检查openH264项目。
x264 is free and produce good quality, but GPL or commercial license. x264是免费的，并且产生良好的质量，但是具有GPL或商业许可。
解决方案2
0 2018-05-05 18:42:06
I am using LAVFilters for a long time and have no problem with it 我使用LAVFilters很长时间了，没有问题
https://github.com/Nevcairiel/LAVFilters/releases https://github.com/Nevcairiel/LAVFilters/releases
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