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  1. Qt
  2. QTBUG-103492

Qt Multimedia on Windows

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    Details

    • Type: User Story
    • Status: Open
    • Priority: P2: Important
    • Resolution: Unresolved
    • Affects Version/s: 6.2.0, 6.3.0
    • Fix Version/s: None
    • Component/s: Multimedia
    • Labels:
      None
    • Platform/s:
      Windows

      Description

      In Qt5 /qml it was possible to playback udpsrc stream as rtp payload on Windows MSVC kit , below qml code works on Qt5, When migrating to qt6 (6.3) this same code stopped working anymore, No error reported in Qt creator .. only if I check Video element error, I get

      Failed to load source
      

      ; in Qt6, QMultimedia back end is Windows media foundation , as of Qt supported-media-formats Under Widows section ,whatever available for whatever Windows media player ..so should also be for Qt , strangely, I can play the stream with same url using Windows media player , which also uses media foundation. I also have installed the K-Lite codec pack from codec guide in same reference .. , Qt6 tells nothing why loading source failed
      qml Code

      import QtQuick
      import QtQuick.Controls
      import QtMultimedia
      
      
      Window {
          id: root
          width: 640
          height: 480
          visible: true
          title: qsTr("Hello World")
          Component.onCompleted: {
              mediaplayer.source = "rtp://192.168.0.174:5005/? udpsrc.caps=application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)JPEG, payload=(int)26"
              //mediaplayer.source = "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4"
              mediaplayer.play()
          }
          Video {
              id: mediaplayer
              width: 640
              height: 480
              onErrorChanged: console.log("play error", mediaplayer.errorString , error) // Failed to load source
          }
      }
      

      GStreamer pipeline for udp streaming:

      gst-launch-1.0 filesrc location=./local_video.mp4 ! decodebin ! queue ! videoconvert ! jpegenc ! queue ! rtpjpegpay ! udpsink host=192.168.0.174 port=5000
      

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            People

            Assignee:
            laknoll Lars Knoll
            Reporter:
            mohammad.a.kanan Mohammad Kanan
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              Dates

              Created:
              Updated:

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