MediaPlayer QML 類

Adds media playback to a scene. 更多...

import 語句：	import QtMultimedia
實例化：	QMediaPlayer

所有成員列錶，包括繼承成員

特性

activeAudioTrack : int
activeSubtitleTrack : int
activeVideoTrack : int
audioOutput : AudioOutput
audioTracks : list<mediaMetaData>
bufferProgress : real
duration : int
error : enumeration
errorString : string
hasAudio : bool
hasVideo : bool
loops : int
mediaStatus : enumeration
metaData : mediaMetaData
playbackRate : real
playbackState : enumeration
playing : bool
position : int
seekable : bool
source : url
subtitleTracks : list<mediaMetaData>
videoOutput : VideoOutput
videoTracks : list<mediaMetaData>

信號

errorOccurred ( error , errorString )
playbackStateChanged ()

方法

pause ()
play ()
stop ()

詳細描述

Text {
    text: "Click Me!";
    font.pointSize: 24;
    width: 150; height: 50;
    MediaPlayer {
        id: playMusic
        source: "music.wav"
        audioOutput: AudioOutput {}
    }
    MouseArea {
        anchors.fill: parent
        onPressed:  { playMusic.play() }
    }
}

You can use MediaPlayer together with a MultiMedia::AudioOutput to play audio content, or you can use it in conjunction with a Multimedia::VideoOutput for rendering video.

Item {
    MediaPlayer {
        id: mediaplayer
        source: "groovy_video.mp4"
        audioOutput: AudioOutput {}
        videoOutput: videoOutput
    }
    VideoOutput {
        id: videoOutput
        anchors.fill: parent
    }
    MouseArea {
        anchors.fill: parent
        onPressed: mediaplayer.play();
    }
}

另請參閱 AudioOutput and VideoOutput .

特性文檔編製

activeAudioTrack : int

This property holds the track number of the currently active audio track. Set to -1 to disable audio track.

The default property value is 0 : the first audio track.

activeSubtitleTrack : int

This property holds the track number of the currently active subtitle track. Set to -1 to disable subtitle track.

The default property value is -1 : no subtitles active.

activeVideoTrack : int

This property holds the track number of the currently active video audio track. Set to -1 to disable video track.

The default property value is 0 : the first video track.

audioOutput : AudioOutput

This property holds the target audio output. Accepts one AudioOutput 元素。

另請參閱 QMediaPlayer::setAudioOutput ().

[read-only] audioTracks : list < mediaMetaData >

This property holds a list of metadata. Each index refers to an audio track.

The metadata holds properties describing the individual tracks. For audio tracks the Language is usually the most important property.

另請參閱 mediaMetaData .

[read-only] bufferProgress : real

This property holds how much of the data buffer is currently filled, from 0.0 (空) 到 1.0 (完整)。

Playback can start or resume only when the buffer is entirely filled. When the buffer is filled, MediaPlayer.Buffered is true. When buffer progress is between 0.0 and 0.1 , MediaPlayer.Buffering 被設為 true .

A value lower than 1.0 implies that the property MediaPlayer.StalledMedia is true .

另請參閱 mediaStatus .

[read-only] duration : int

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 set to 0 .

[read-only] error : enumeration

This property holds the error state of the audio. It can be one of the following.

值	描述
NoError	當前沒有錯誤。
ResourceError	The audio cannot be played due to a problem allocating resources.
FormatError	音頻格式不支持。
NetworkError	The audio cannot be played due to network issues.
AccessDeniedError	The audio cannot be played due to insufficient permissions.

[read-only] errorString : string

This property holds a string describing the current error condition in more detail.

[read-only] hasAudio : bool

此特性保持媒體是否包含音頻。

[read-only] hasVideo : bool

此特性保持媒體是否包含視頻。

loops : int

Determines how often the media is played before the player stops. Set to MediaPlayer::Infinite to loop the current media file forever.

默認值為 1 。把此特性設為 0 不起作用。

[read-only] mediaStatus : enumeration

This property holds the status of media loading. It can be one of the following:

Property value	描述
NoMedia	No media has been set.
LoadingMedia	The media is currently being loaded.
LoadedMedia	The media has been loaded.
BufferingMedia	The media is buffering data.
StalledMedia	Playback has been interrupted while the media is buffering data.
BufferedMedia	The media has buffered data.
EndOfMedia	The media has played to the end.
InvalidMedia	The media cannot be played.

[read-only] metaData : mediaMetaData

Returns meta data for the current media used by the media player.

Meta data can contain information such as the title of the video or its creation date.

注意： The Windows implementation provides metadata only for media located on the local file system.

playbackRate : real

This property holds the rate at which audio is played at as a multiple of the normal rate.

默認為 1.0 .

[read-only] playbackState : enumeration

This property holds the state of media playback. It can be one of the following:

Property value	描述
PlayingState	The media is currently playing. This indicates the same as the playing 特性。
PausedState	Playback of the media has been suspended.
StoppedState	Playback of the media is yet to begin.

[read-only, since 6.5] playing : bool

Indicates whether the media is currently playing.

This property was introduced in Qt 6.5.

另請參閱 playbackState .

position : int

The value is the current playback position, expressed in milliseconds since the beginning of the media. Periodically changes in the position will be indicated with the positionChanged() signal.

若 seekable property is true, this property can be set to milliseconds.

[read-only] seekable : bool

This property holds whether the position of the media can be changed.

source : url

此特性保持媒體的源 URL (統一資源定位符)。

Item {
    MediaPlayer {
        id: mediaplayer
        source: "file:///test.mp4"
        videoOutput: videoOutput
        audioOutput: AudioOutput {
        }
    }
    VideoOutput {
        id: videoOutput
        anchors.fill: parent
    }
    MouseArea {
        id: playArea
        anchors.fill: parent
        onPressed: mediaplayer.play();
    }
}

另請參閱 QMediaPlayer::setSource ().

[read-only] subtitleTracks : list < mediaMetaData >

This property holds a list of metadata. Each index refers to a subtitle track.

The metadata holds properties describing the individual tracks. For subtitle tracks the Language is usually the most important property.

另請參閱 mediaMetaData .

videoOutput : VideoOutput

This property holds the target video output. Accepts one VideoOutput 元素。

另請參閱 QMediaPlayer::setVideoOutput ().

[read-only] videoTracks : list < mediaMetaData >

This property holds a list of metadata. Each index refers to a video track.

The metadata holds properties describing the individual tracks.

另請參閱 mediaMetaData .

信號文檔編製

errorOccurred ( error , errorString )

此信號發射，當 error 齣現。 errorString parameter may contain more detailed information about the error.

注意： 相應處理程序是 onErrorOccurred .

另請參閱 QMediaPlayer::Error .

playbackStateChanged ()

此信號發射，當 playbackState 特性變更。

注意： 相應處理程序是 onPlaybackStateChanged .

方法文檔編製

pause ()

暫停媒體迴放。

設置 playbackState property to PausedState, and changes playing to false .

play ()

Starts or resumes playback of the media.

設置 playbackState property to PlayingState, and changes playing to true .

stop ()

停止媒體迴放。

設置 playbackState property to StoppedState, and changes playing to false .