DirectShow.NET示例-加载更好的配置文件 [英] DirectShow.NET sample - load a better profile
问题描述
我正在运行DirectShow.NET的CapWMV示例应用程序.
I am running the CapWMV sample application of DirectShow.NET.
它正在Capture.cs中加载非常低质量的配置文件:
It is loading a very low quality profile in Capture.cs:
// Windows Media Video 8 for Dial-up Modem (No audio, 56 Kbps)
// READ THE README for info about using guids
Guid cat = new Guid(0x6E2A6955, 0x81DF, 0x4943, 0xBA, 0x50, 0x68, 0xA9, 0x86, 0xA7, 0x08, 0xF6);
自述文件
如果必须使用向导，则可以在％windir％\ WMSysPr9.prx中找到它们.
if you MUST use guids, you can find them defined in %windir%\WMSysPr9.prx.
但是当我加载另一个配置文件时，如果失败，可能是因为我没有连接音频流，如WindowsMedia自述文件所解释的那样:
But when I load another profile, if fails, presumably because I am not connecting an audio stream, as the WindowsMedia Readme doc explains:
最简单(在样本中最常用的一种)是使用 IWMProfileManager :: LoadProfileByID.此方法需要一个Guid， 与％windir％\ WMSysPr9.prx中的条目匹配，并用于 指定输出的各种参数(BPS，视频大小等).
The easiest (the one used most commonly in the samples) is to use IWMProfileManager::LoadProfileByID. This method takes a Guid, which gets matched with the entries in %windir%\WMSysPr9.prx, and is used to specify various parameters of the output (BPS, video size, etc).
如果配置文件配置了2个流(即音频和视频)，则您 必须将音频和视频流都连接到编写器，否则 作家将无法写作.
If the profile is configured with 2 streams (ie Audio & video), you MUST connect both an audio and a video stream to the writer, or the writer will fail to write.
假设我无法使用DirectShow.NET从文件中加载配置文件，则必须从WMSysPr9.prx(由Guid)加载更好的配置文件，并连接音频流.
As I'm assuming I can't load a profile from a file with DirectShow.NET, I must load a better profile from WMSysPr9.prx (by a Guid) and connect an audio stream.
在该示例中，我将如何进行这种连接?
How would I go about doing that connection in this sample?
推荐答案
基于GUID的系统"配置文件已弃用.它们是预定义的Windows Media 8配置文件，您只能通过GUID进行引用，而不是通过片段来构建整个配置文件. Windows Media 9没有提供任何预设，因此您应该创建一个空的配置文件并在其中添加流以对其进行设置.
GUID based "system" profiles are deprecated. They are predefined Windows Media 8 profiles which you can reference by GUID only instead of building the entire profile from pieces. Windows Media 9 did not offer any presets so you are supposed to create an empty profile and add streams there settings them up.
没有使用Windows Media 9系列编解码器的预定义系统配置文件.您可以通过使用版本8配置文件作为起点来创建自己的Windows Media 9系列配置文件.有关更多信息，请参阅重用流配置.
There are no predefined system profiles that use the Windows Media 9 Series codecs. You can create your own Windows Media 9 Series profile by using a version 8 profile as a starting point. For more information, see Reusing Stream Configurations.
MSDN guides you in profile creation here:
创建和/或修改配置文件的基本步骤是:
The basic steps in creating and/or modifying profiles are:
- 创建一个空的配置文件，或加载一个现有的配置文件进行编辑.
- 根据需要，根据从编解码器检索到的支持配置文件数据配置每个流，这些数据将用于编码 流.
- 根据需要配置互斥.
- 根据需要配置带宽共享.
- 根据需要设置文件中流的优先级.
- Create an empty profile, or load an existing profile to edit.
- Configure each of the streams, if required, based on supported profile data retrieved from the codec that will be used to encode the stream.
- Configure mutual exclusion, if needed.
- Configure bandwidth sharing, if needed.
- Set the priority of the streams in the file, if required.
You can find a code snippet here. It is C++, but conversion into C# would be pretty straightforward.
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