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Details

Type: Bug
Resolution: Done
Priority: P3: Somewhat important
Fix Version/s: 5.11.2
Affects Version/s: 5.10.0, 5.9.6
Component/s: Documentation, Multimedia
Labels:
None
Environment:
B801, Android 7.0, armeabi-v7a

Platform/s:

Android

Description

On Android, if you have a QML Video with `autoPlay` set to `true`, and you change its playlist (eg. via `addItem`), it requires manually `stop()`ping the video playback before the changes take effect. This doesn't seem to be required on desktop. Looking at the docs of Video and MediaPlayer I didn't found the exact behavior documented either.

Example code:

import QtQuick 2.9
import QtQuick.Window 2.2
import QtMultimedia 5.9

Window {
    visible: true
    width: 640; height: 480
    title: qsTr("Hello World")

    Timer {
        interval: 100; running: true
        onTriggered: {
            myvideo.playlist.addItem("qrc:///big_buck_bunny.mp4");
            // or: myvideo.playlist.addItem("http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4");
            // or: myvideo.playlist.addItem("file:///storage/emulated/0/big_buck_bunny.mp4");
            myvideo.play();
        }
    }

    Video {
        id: myvideo
        anchors.fill: parent

        autoPlay: true
        playlist: Playlist {}
    }
}

With `autoPlay` set to `false`, the video playback starts after calling `play()` on all platforms. With `true`, this continues to works on desktop (tested: Linux and Windows), but requires calling `stop()` first on Android.