Exercise 2 - Manually Collect ETW Logs for Media Scenarios Using WPR

Automated tests are great for verifying the audio or temporal video quality of a device for a specific automated scenario; however, if an audio or video glitch occurs during a manual test, then the Windows Performance Recorder (WPR) tool can be used to manually collect an Event Tracing for Windows (ETW) trace during a repro of the problem.

Step 1: Collect an ETW trace using WPR

1. Right-click on the Start menu and click on Command Prompt (Admin).

2. Navigate to the folder where you have WPR installed.

3. Run the following command:

   wpr -cancel
   

4. Run the following command:

   wpr -start Media.wprp -filemode
   

5. Run a workload such as video playback or a real time communications scenario.

6. Run the following command:

   wpr -stop Media.etl
   

Step 2: Visualize the ETW trace in MXA

1. Install the Media eXperience Analyzer (MXA) which is part of the Windows ADK.

2. Right-click on the Start menu and click on Command Prompt (Admin).

3. Navigate to the folder where you installed MXA.

4. Run the following command:

   xa -i <Media.etl location>\Media.etl
   

   For example, if Media.etl were located at C:\Performance\Media, you would type the following command:

   xa -i C:\Performance\Media\Media.etl
   

5. Press the Turn Symbols Off button to turn off symbol lookup.

6. Explore the various media related datasets and providers enabled in the trace.