Privacy policy. Thank you. Microsoft makes no warranties, express or implied, with respect to the information provided here. This namespace provides APIs for obtaining media frames from one or more MediaFrameSource objects representing capture devices. MediaFrameSourceGroup objects are used to discover groups of media frame sources that can be used simultaneously.
A MediaFrameReader is used to acquire frames from a frame source. Frames can arrive in several different formats depending on what type of media frame source is providing the frames. Represents a frame of audio data retreived from a MediaFrameSource. Represents a VideoMediaFrame that contains depth video data. Describes the format of a DepthMediaFrame. Click the Advanced button in the Performance window. Click OK to confirm your operation.
The keyboard shortcut will take a screenshot in Windows Media Player of the active window. Take a screenshot of your computer screen with high image quality. Screenshot on computer with full screen, active window or customized region. Powerful editing features to edit screenshot and add various elements to it.
First, you need to free install and run this screenshot software on your computer. To free capture still images from video in Windows Media Player, you can choose the Screen Capture feature.
Now you can freely capture still images from the playing movie. As it mentioned above, it allows you to take a screenshot with entire screen, active window, or custom region. After you take the screenshot, you can edit it and adjust its output image effect. Just free download it and have a try.
Frequently Asked Questions Question 1. How do you take a screenshot on Mac? Question 2. Or you can find Options in Tools on menu bar. Step 2 Go to the Performance tab on the popup dialog and click the Advanced button. Make sure to check Use video mixing render and uncheck Use overlays. Click OK and then hit Apply. Note: For old versions of WMP, if you do not disable the overlays, you can get nothing but a black image when taking screenshots.
It may be a bit complex to capture still image from video in various versions of Windows Media Player. The good news that Apeaksoft Screen Recorder can offer the consistent workflow. It is compatible with Mac as well. Moreover, this function is free to use without asking registration. If you wish to set custom options, open the Preferences dialog from the Menu option.
Then you can change options related screenshot format, hotkeys and more. Play a video in Windows Media Player and pause it when you see the desired frame. Switch to Screen Recorder and choose Screen Capture.
Now, the cursor will turn to a cross. Click and drag your mouse to cover entire Windows Media Player window or a part of the image. Once you release your mouse, the toolbar will pop up with several options. Here you can edit and save the still image. To add some text, for example, choose the big T icon.
Then set color, font, size and more. Click the right position on the screenshot and type in the texts. Preview screenshot: Click the Enlarge icon to view the screenshot in full screen. Save screenshot to hard disk: Click the Save icon and Screen Recorder will save it based on your setting. You can copy retrieved frames, using the SoftwareBitmap. Copy method for example, and then release the original frames to overcome this limitation. MediaFrameSource inputSource, System.
String outputSubtype, Windows. String outputSubtype , the frames returned are copies of the original frame data and so they do not cause frame acquisition to halt when they are retained. When you are done reading frames, be sure to stop the media frame reader by calling StopAsync , unregistering the FrameArrived handler, and disposing of the MediaCapture object. For more information about cleaning up media capture objects when your application is suspended, see Display the camera preview.
The Universal Windows Camera frames sample provides a helper class that makes it easy to display the frames from color, infrared, and depth sources in your app.
Typically, you will want to do something more with depth and infrared data than just display it to the screen, but this helper class is a helpful tool for demonstrating the frame reader feature and for debugging your own frame reader implementation.
In order to do pixel manipulation on SoftwareBitmap images, you must access a native memory buffer. To do this, you must use the IMemoryBufferByteAccess COM interface included in the code listing below and you must update your project properties to allow compilation of unsafe code. For more information, see Create, edit, and save bitmap images. Starting with Windows 10, version , you can use MultiSourceMediaFrameReader to receive time-corellated frames from multiple sources.
This API makes it easier to do processing that requires frames from multiple sources that were taken in close temporal proximity, such as using the DepthCorrelatedCoordinateMapper class. One limitation of using this new method is that frame-arrived events are only raised at the rate of the slowest capture source.
Extra frames from faster sources will be dropped. Also, because the system expects frames to arrive from different sources at different rates, it does not automatically recognize if a source has stopped generating frames altogether. The example code in this section shows how to use an event to create your own timeout logic that gets invoked if correlated frames don't arrive within an app-defined time limit. This example will use a color source and a depth source. Declare some string variables to store the media frame source IDs that will be used to select frames from each source.
Using the techniques described previously in this article, query for a MediaFrameSourceGroup that includes the color and depth sources required for this example scenario. After selecting the desired frame source group, get the MediaFrameSourceInfo for each frame source.
Create and initialize a MediaCapture object, passing the selected frame source group in the initialization settings.
After initializing the MediaCapture object, retrieve MediaFrameSource objects for the color and depth cameras. Store the ID for each source so that you can select the arriving frame for the corresponding source.
Register an event handler for the FrameArrived event. This example creates an instance the FrameRenderer helper class, described previously in this article, to render frames to an Image control.
Start the frame reader by calling StartAsync. Register an event handler for the CorellationFailed event declared earlier in the example. We will signal this event if one of the media frame sources being used stops producing frames. Finally, call Task. Run to call the timeout helper method, NotifyAboutCorrelationFailure , on a separate thread. The implementation of this method is shown later in this article. The FrameArrived event is raised whenever a new frame is available from all of the media frame sources that are managed by the MultiSourceMediaFrameReader.
This means that the event will be raised on the cadence of the slowest media source. If one source produces multiple frames in the time that a slower source produces one frame, the extra frames from the fast source will be dropped. We will check this event in the NotifyCorrelationFailure method that is running in a separate thread. Finally, perform any processing on the time-correlated media frames. This example simply displays the frame from the depth source.
The NotifyCorrelationFailure helper method was run on a separate thread after the frame reader was started. In this method, check to see if the frame received event has been signaled.
Remember, in the FrameArrived handler, we set this event whenever a set of correlated frames arrive. If the event hasn't been signaled for some app-defined period of time - 5 seconds is a reasonable value - and the task wasn't cancelled using the CancellationToken , then it's likely that one of the media frame sources has stopped reading frames.
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