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:

  • Windows developer platform (APIs, runtimes, and controls)
  • Dev Center (dashboard, reporting/analytics, submission process, etc.)
  • Microsoft Store

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
  • Documentation on docs.microsoft.com: Sign in at the bottom of the page to give documentation feedback via Github
  • 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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      2 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}

    • 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…

      7 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 →
                    • 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.

                      7 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 →
                        • TimedTextSource.Parsed event or similar

                          It would nice to have something like Parsed event in TimedTextSource,
                          that allows to configure cues StartTime and Duration properties.
                          In Resolved event it is ignored and texts are rendering in old start time.

                          1 vote
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                            0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                          • HLS playback unstable on build 14393.2248

                            Hi,

                            I developed an app that plays public HTTP live streams. It worked fine and I used it long time till mid May 2018, when many of HLS streams wouldn't play stable. It plays from few seconds to several minutes than starts hiccuping then finally stops. It reproduces for these streams all the time on Windows Phone 10, as well as Windows Phone Emulator as well as Windows 10 Desktop, all build 14393.

                            The "good" streams continue playing smoothly on all those devices.
                            The "bad" streams play smoothly on fresh versions of Windows Phone (Lumia 950 XL, build 15xxx), and…

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

                              We need a proper multimedia timer to create a good quality midi player/editor. It needs to work as good as the one available in winmm.dll
                              1 ms resolution.

                              3 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.

                                4 votes
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                                  2 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                • Add support for other audio formats with spatial audio, at least for panning.

                                  Currently you cannot create an Emitter unless you are using 48K Wave audio. Back in DirectSound, you could do L/R panning with any Wave sample-rate. One of the benefits of migrating to AudioGraph is support for mp3 & other files, but if you want do panning, you still have to convert them first. Maybe at least if using the simplified FoldDown mode, panning other file formats could be supported?

                                  2 votes
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                                    0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Make the default display setting for external screens a user setting

                                    Working in ABO (Activity Based Office) I use different hardware to my Surface all the time. Each time I sit down the display setting for the external screen is to clone but I want it to be extended.

                                    My Customer (I'm an Office 365 Consultant) are struggling with the adoption of this new way of working because of simple things like this that annoy and takes 2-10 minutes per person per working spot.

                                    I want the screen setting to be an option, where I can set my preferance as a default.

                                    2 votes
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                                      0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                    • MediaStreamSample: Add way to create sample from Direct3D Surface

                                      It is possible for us to get a D3DDevice from MediaStreamSource, as indicated by admins here:

                                      https://wpdev.uservoice.com/forums/110705-universal-windows-platform/suggestions/31915711-mediastreamsource-add-way-to-use-imfgetservice-fr

                                      I can verify that this works. But unfortunately it is not possible to create a MediaStreamSample from D3D Surface. So while we can use D3D to do hardware accelerated video decoding, it is not possible to pass the decoded samples (in a surface) to the MF pipeline through MediaStreamSource.

                                      Please add an overload to create a MediaStreamSample from a D3D Surface. This will allow us to do full hardware accelerated video decoding.

                                      4 votes
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                                        0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Support HLS version 7 so Enterprises can move to Fragmented MP4 backed streams

                                        Apple announced support for Fragmented MP4 backed HLS Streams under HLS version 7: https://developer.apple.com/videos/play/wwdc2016/504/ at WWDC 2016.

                                        We are looking to change the way our HLS streams are generated and Windows seems to be one of the few platforms that doesn't support playing these type of streams.

                                        This will also impede our ability to reuse these fMP4s for MPEG DASH in the future.

                                        Can you please add support for this?

                                        8 votes
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                                          working on it  ·  2 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Add TimedTextStreamDescriptor to enable subtitles from MediaStreamSource

                                          The MediaPlayerElement supports various subtitle formats. But when we play a video file using MediaStreamSource, it is not possible to pass through the subtitle streams, because we cannot create MediaStreamDescriptors for them. So audio and video works, but subtitles don't work.

                                          Since subtitles are demuxed on-the-fly during playback, we cannot use TimedTextSource either, this would require the complete stream/file to be available during creation...

                                          This would be very helpful to make the MS initiated FFmpegInterop truly unviersally useful.

                                          6 votes
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                                            0 comments  ·  Audio/Graphics/Media playback  ·  Flag idea as inappropriate…  ·  Admin →
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