Question

我使用Qt 5.4.2，我为播放视频创建了一个Qt Quick程序。

我的视频规范。是1920x1080，H.264,25f / s，12502kbps

代码是简单视频示例的复制

        VideoOutput {
        anchors.fill: parent;
        source: mediaPlayer;

        signal sizeChanged;
        signal fatalError;

        property alias duration: mediaPlayer.duration;
        property alias mediaSource: mediaPlayer.source;
        property alias metaData: mediaPlayer.metaData;
        property alias playbackRate: mediaPlayer.playbackRate;
        property alias position: mediaPlayer.position;
        property alias volume: mediaPlayer.volume;

        MediaPlayer {
            id: mediaPlayer;
            autoLoad: true;
            autoPlay: true;
            source: "file:///" + applicationDirPath + "/video/" + playVideoList.currItem();

            onError: {
                if (MediaPlayer.NoError != error) {
                    console.log("[qmlvideo] VideoItem.onError error " + error + " errorString " + errorString);
                    console.log(mediaPlayer.source)
                }
            }

            onStopped: {
                mediaPlayer.source = "file:///" + applicationDirPath + "/video/" + playVideoList.nextItem();
                mediaPlayer.play();
            }
        }
        onHeightChanged: sizeChanged();
        function start() { mediaPlayer.play(); }
        function stop() { mediaPlayer.stop(); }
    }

该节目播放视频时总是滞后。

有什么建议吗？

感谢。

Answer 1

好的，最后我知道Qt的MediaPlayer太弱而无法播放高质量的视频。

现在我使用第三方模块QtAV

Qt在Ubuntu14.04上播放视频时快速程序滞后

1 个答案: