Universal Windows Platform

Welcome to the Universal Windows Platform Developer Feedback site. This site provides the Windows developer community with a channel for feedback on the following topics:

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Your suggestions will be reviewed by the Windows platform developer team to help with planning ideas and to better understand how developers are using the platform.

What this forum is not intended to cover or capture:

  • Windows consumer suggestions: Use the Windows Feedback Hub app built directly into Windows 10
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  • Visual Studio / .NET: Use the Visual Studio UserVoice site

If you’re new to UserVoice, two things to keep in mind are (a) List items (and item rankings) represent community interest in features, and not the actual priority list for the product team; and (b) Suggestions made using this forum will be moderated if they do not actually represent a feature request (or if too many different ideas are included in one suggestion).

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  1. UWP C# - Set Subtype "MPEG2TS" to ContainerEncodingProperties throws exception

    ContainerEncodingProperties seems to support "MPEG2TS" video container:
    https://docs.microsoft.com/en-us/uwp/api/windows.media.mediaproperties.containerencodingproperties.subtype#Windows_Media_MediaProperties_ContainerEncodingProperties_Subtype

    Windows 10 and UWP Apps seems to support H.264 encoding with "MPEG2TS" container:
    https://docs.microsoft.com/en-US/windows/uwp/audio-video-camera/supported-codecs

    Why I can't set the Subtype property to "MPEG2TS" in the ContainerEncodingProperties object?

    Target is to live stream the webcam (video and audio) from Raspberry Pi in Windows IoT Core UWP app to a browser use MPEG2TS encoding (MPEG-DASH).

    See my stackoverflow question:
    https://stackoverflow.com/questions/47229957/uwp-c-sharp-http-webcam-live-streaming-server-useing-mpeg-dash

    Code:
    var mediaCapture = new MediaCapture();
    await mediaCapture.InitializeAsync();

    var mediaEncodingProfile = MediaEncodingProfile.CreateMp4(VideoEncodingQuality.HD1080p);

    var containerEncodingProperties = new ContainerEncodingProperties();
    containerEncodingProperties.Subtype = "MPEG2TS";
    //Throws System.ArgumentException: 'Value does not fall within the expected range.'

    mediaEncodingProfile.Container = containerEncodingProperties;

    var…

    1 vote
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      3 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →

      Good catch. Looks like we have a doc bug and implementation bug.

      Docs says that “MPEG2TS” and “MPEG2PS” are valid values. But the implementation currently only recognizes “MPEG2”, which creates a MPEG-2 Program Stream container. To create a MPEG-2 Transport Stream container, one would have to specify the GUID for that container instead of using the friendly name.
      The GUID for MPEG-2 Transport Stream is {e06d8023-db46-11cf-b4d1-00805f6cbbea}

    • ASIO

      Can you select ASIO as an input devices?

      1 vote
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        0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
      • Direct2D color mamagement effect with any rendering intent other than perceptual uses a lot of memory at small scales

        I'm trying to develop a high quality image processing pipeline (for both image display and image conversion) using Direct2D (actually a combination of Win2D, Win2D/Direct2D interop and WIC). This is quite powerful by using effects and CreateImageSourceFromWic which can then handle arbitrary image sizes. However, there are a number of issues. One is that creating a color management effect with any rendering intent other than perceptual and rendering at a scale of about 0.07 or less starts to produce large spikes in memory usage (at least for large images e.g. 5.5k*3.5k). It is especially bad when using HighQualityCubic interpolation, and…

        1 vote
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          0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
        • AudioFrameInputNode with N channels > 2

          In order to make things more efficient when mixing a lot of synthesized notes, I'd like us to consider having a AudioInputNode that supports N channels, where N could be 8 or more.

          This significantly improves performance when one is attempting to mix multiple synthesized sounds (content that is made on the fly in the AudioFrameInputNode.QuantumStarted event).

          Thanks
          -e

          1 vote
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            0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
          • mediaplayerelement seekbar hover thumbnail

            This feature is almost available in any web based video player or any Desktop based video player, the feature is simple. When a mediaplayerelement is playing or paused a video. and the user hover overs the seekbar, with mouse, or pen or any other input device for that perspective, wherver is the user mouse, show a small thumbnail of the video file at that specific position, just above the seekbar ( slider ) and as the user moves the mouse along the seekbar, the thumbnail should update accordingly.

            10 votes
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              0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
            • Virtual MIDI ports

              I'd like to see an API to create virtual MIDI ports built into Windows. The Surface touch screen has tons of possibilities as a MIDI controller, but this currently requires installing a 3rd party driver, which is not a great end user experience. Built in RtpMIDI would be nice too, but at least this would be achievable without a kernel mode driver if we had virtual MIDI ports.

              5 votes
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                2 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
              • Codecs for UWP Media Element

                uwp Media Element or MediaPlayerElement are fantastic with UI.But their codecs to play different kinds of audio and video files is very limited. Please integrate ffmpeg or vlc libraries by default in these xaml elements to make it easier for developers to build apps that run all kinds of video and audio files.
                Thankyou

                16 votes
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                  0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                • Add Ogg Vorbis/Opus to AudioEncodingProperties

                  It would be extremely helpful to be able to create MediaSourceStreams for audio streams in the Vorbis and/or Opus formats. In my case, I need this functionality for implementing Shoutcast/Icecast functionality.

                  14 votes
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                    2 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                  • Add ability to use WASAPI loopback capture.

                    Currently UWP can't open WASAPI output devices in capture mode due to COM restrictions. This means loopback auto capture is not supported.

                    5 votes
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                      0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                    • Redesign Audio Drivers to use all available channels (Like ASIO)

                      The current Windows Audio driver design only allows you to use 24 channels simulatenously. There are many devices (like a USB-Madi, or Dante Virtual Soundcard) which use at least 64 channels. These channels are not accessible with the current AudioGraph API's. This is a real problem.

                      The Playback Devices and Recording Devices section should be merged and more info like samplerate, channelcount and meters for every input and output should be added with a better UI. It should also be possible to easily select the device where you want to play your system sounds but also to select two channels…

                      9 votes
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                        0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                      • [Bug] AudioGraph: Gaps and clicks during playback

                        To reproduce you may start with official AudioCreation sample from https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/AudioCreation/cs/AudioCreation
                        Use file playback sample or custom effects sample. Depending on hardware, you may hear gaps right after start or you may need load CPU with some additional work, like scrolling UI or running some work in background threads.
                        I guess it is result of extremely short quantum size (10ms; even switching between threads could take more time) and too low buffer length (2 quants), but it could be just some synchronization issue.

                        8 votes
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                          6 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                        • Enable HDR output mode for MediaPlayerElement for Third-party App

                          Fact 1:
                          Current only Microsoft Movie & TV app have this capability, when User play HDR video the TV will indicate it's output HDR color format

                          Fact 2:
                          Microsoft Media Player don't support HDR

                          Fact 3:
                          so as my Video Player App. even though Hardware decoding HEVC HDR Video Sample will not HDR output , color seems over exposure, beacause not enough Color space availabale.

                          Please expose this Feature for Developer, even just as a restricted capability will be sufficent.

                          refer to:
                          https://blogs.msdn.microsoft.com/chuckw/2017/12/15/directx-and-uwp-on-xbox-one/

                          HDR
                          UWP on Xbox One apps have limited access to the High-Dynamic Range (HDR) capabilities of the…

                          8 votes
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                            2 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                          • dvd and Blu Ray Playback support

                            There is a very high demand from the users of media applications on Windows 10 to have support of DVD and BLU-RAY playback in the media apps, and currently there is no API which can be used to support that in a uwp app. As a developer I would really appreciate if such an API feature is created for uwp SDK.

                            4 votes
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                              0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                            • AdaptiveMediaSource on Windows 1803 not playing SmoothStreaming

                              On Windows 1802 compilation 17134 AdaptativeMediaSource is not able to play SmoothStreaming.

                              Although the documentation (https://docs.microsoft.com/en-us/windows/uwp/audio-video-camera/adaptive-streaming) says it can play the standard code will produde a format error.

                              AdaptiveMediaSourceCreationResult result = await AdaptiveMediaSource.CreateFromUriAsync(uri);

                              if (result.Status == AdaptiveMediaSourceCreationStatus.Success)
                              {
                              ams = result.MediaSource;
                              mediaPlayerElement.SetMediaPlayer(new MediaPlayer());
                              mediaPlayerElement.MediaPlayer.Source = MediaSource.CreateFromAdaptiveMediaSource(ams);
                              mediaPlayerElement.MediaPlayer.Play();
                              }

                              We are trying to play the preview from AzureMediaServices V2 LiveChannels.

                              1 vote
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                                1 comment  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                              • Add video frame timestamp into MediaPlayer VideoFrameAvailable

                                Hi,

                                This is about the Microsoft.Media.Playback.MediaPlayer class.

                                In FrameServer mode, there is no way to get the timestamp of the frame that is delivered by the callback VideoFrameAvailable. Therefore is it not possible to display the frames smoothly. In the previous Media Foundation API the timestamp was included with the frame.
                                Could this functionality be added in to the next update of the MediaPlayer class?

                                Thanks,

                                1 vote
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                                  0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                • Allow VirtualLock API from UWP apps

                                  It seems VirtualLock API is not permitted from UWP apps.

                                  For uwp apps that choose to do their own low level audio rendering / capturing for e.g. using WASAPI, the app should be allowed to pin the memory buffer such that a page fault is not incurred in the real-time thread callback function.

                                  I have not seen a issue so far just because my desktop system has enough memory. But without the guarantee i feel a little uncomfortable.

                                  In general any hard real-time app would require access to locked memory to avoid page faults unless UWP does not want to…

                                  2 votes
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                                    0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Crash on mobile when two MediaCues have the same start time

                                    When running a UWP app on Win 10 desktop, I'm able to add two TimedTextCues to a TimedMetadataTrack with the same StartTime, but on mobile it results in a crash. I'm guessing this is a bug because it doesn't produce an understandable exception. If I add the cues to the track before adding the track to mediaSource.ExternalTimedMetadataTracks, the crash happens when adding the track. I reproduced this on Mobile Emulator 10.0.14393.0 WXGA 4.5 inch 1GB and on a Lumia 640 running 10.0.15063.1088.

                                    Error:

                                    System.Exception: 'Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))'

                                    Minimal repro:

                                    var mediaSource = MediaSource.CreateFromUri(new Uri("https://mediaplatstorage1.blob.core.windows.net/windows-universal-samples-media/sintel_trailer-480p.mp4")); …

                                    2 votes
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                                      1 comment  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Fix the WinRT MIDI APIs

                                      The new WinRT MIDI APIs are broken and have been since their introduction with no sign of plans to be fixed. In addition, the functionality they provide is still lacking compared to other platforms.

                                      There is information on this in the other MIDI topics on this page, and on GitHub if you do an issue search for "winrt midi" or "uwp midi". Please look into how musicians and developers use MIDI and what we would like to be able to do with devices like the Surface, and prioritize giving us the ability to innovate here.

                                      4 votes
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                                        0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                      • MIDI file (.mid) playback support in Groove Music App

                                        Windows Media Player can play .mid files for a very long time but Groove Music App cannot because WinRT does not have API to play MIDI file.

                                        2 votes
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                                          0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Api for streaming and recording the camera at the same time.

                                          I have seen api recording and streaming and previewing the capture from the video. Streaming works well with previewing, but how about being able to do streaming and recording to a file at the same time?

                                          1 vote
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                                            0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
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