Video QML 类型

用于展示指定视频的方便类型。 更多...

• 所有成员列表，包括继承成员

特性

• autoPlay : bool (从 6.7 起)
• bufferProgress : real
• duration : int
• error : enumeration
• errorString : string
• fillMode : enumeration
• hasAudio : bool
• hasVideo : bool
• loops : int
• metaData : mediaMetaData
• muted : bool
• orientation : int
• playbackRate : real
• playbackState : enumeration
• 位置 : int
• seekable : bool
• source : url
• volume : real

信号

• errorOccurred ( error , errorString )
• paused ()
• playing ()
• stopped ()

方法

• pause ()
• play ()
• seek ( offset )
• stop ()

详细描述

Video is a convenience type combining the functionality of a MediaPlayer 和 VideoOutput into one. It provides simple video playback functionality without having to declare multiple types.

The following is sample code to implement video playback in a scene.

Video {
    id: video
    width : 800
    height : 600
    source: "video.avi"
    MouseArea {
        anchors.fill: parent
        onClicked: {
            video.play()
        }
    }
    focus: true
    Keys.onSpacePressed: video.playbackState == MediaPlayer.PlayingState ? video.pause() : video.play()
    Keys.onLeftPressed: video.position = video.position - 5000
    Keys.onRightPressed: video.position = video.position + 5000
}
					

The source file, video.avi , plays when you click the parent of MouseArea . The video plays in an area of 800 by 600 pixels, and its id property has the value 视频 .

Notice that because signals for the 键 have been defined pressing the:

• Spacebar toggles the pause button.
• Left Arrow moves the current position in the video to 5 seconds previously.
• Right Arrow advances the current position in the video by 5 seconds.

Video supports un-transformed, stretched, and uniformly scaled video presentation. For a description of stretched uniformly scaled presentation, see the fillMode property description.

另请参阅 MediaPlayer and VideoOutput .

特性文档编制

This property controls whether the media begins to play automatically after it gets loaded. Defaults to false .

该特性在 Qt 6.7 引入。

This property holds how much of the data buffer is currently filled, from 0.0 (empty) to 1.0 (full).

This property holds the duration of the media in milliseconds.

If the media doesn't have a fixed duration (a live stream for example) this will be 0.

This property holds the error state of the video. It can be one of:

• MediaPlayer . NoError - there is no current error.
• MediaPlayer .ResourceError - the video cannot be played due to a problem allocating resources.
• MediaPlayer .FormatError - the video format is not supported.
• MediaPlayer .NetworkError - the video cannot be played due to network issues.
• MediaPlayer .AccessDenied - the video cannot be played due to insufficient permissions.
• MediaPlayer .ServiceMissing - the video cannot be played because the media service could not be instantiated.