RIM黑莓Record 3GP视频

问题描述

我正在编写一个可以录制3GP视频的应用程序.我已经尝试了MMAPI和Invoke API.但是有以下问题.

I am writing an application that can record a 3GP video.I have tried both MMAPI and Invoke API. But have following issues.

使用MMAPI:

1. 当我录制流媒体时，它以RIMM流媒体格式录制视频.当我尝试播放此视频播放器时出现错误"Unsupported media format."
2. 当我记录到文件中时.它将创建一个大小为0的文件.

使用调用API:

1. 在彩信模式下，录制视频的时间不得超过30秒.
2. 在正常模式下，文件的大小非常大.
3. 一旦调用相机应用程序，我将无法对该应用程序进行任何控制.

这是我的源代码:

       _player = javax.microedition.media.Manager

                .createPlayer("capture://video?encoding=video/3gpp&mode=mms");

//我已经尝试过从System.getProperty("video.encodings")方法返回的每种编码方式

// I have tried every encoding returns from System.getProperty("video.encodings") method

        _player.realize();

        _videoControl = (VideoControl) _player.getControl("VideoControl");
        _recordControl = (RecordControl) _player.getControl("RecordControl");
        _volumeControl = (VolumeControl) _player.getControl("VolumeControl");



       String videoPath = System.getProperty("fileconn.dir.videos");
        if (videoPath == null) {
            videoPath = "file:///store/home/user/videos/";
        }


        _recordControl.setRecordLocation(videoPath + "RecordedVideo.3gp");
        _player.addPlayerListener(this);





         Field videoField = (Field) _videoControl.initDisplayMode(
                VideoControl.USE_GUI_PRIMITIVE,
                "net.rim.device.api.ui.Field");

        _videoControl.setVisible(true);
        add(videoField);

        _player.start();

在开始菜单项中选择:

     try {
            _recordControl.startRecord();


        } catch (Exception e) {

            _player.close();
            showAlert(e.getClass() + "  " + e.getMessage());
        }

停止菜单上的项目选择:

On stop menuItem selection:

     try {
            _recordControl.commit();

        } catch (Exception e) {

            _player.close();
            showAlert(e.getClass() + "  " + e.getMessage());
        }

如果我做错了请让我.

推荐答案

1. 我有同样的问题，我只知道这是RIM专有格式: http://docs.blackberry.com/en/developers/deliverables/11942/RIM_proprietary_video_format_1001586_11.jsp

1. I have the same issue, I just know this is RIM proprietary format:http://docs.blackberry.com/en/developers/deliverables/11942/RIM_proprietary_video_format_1001586_11.jsp

您得到的文件大小为0，因为此代码:

you get the file size 0 because this code:

_recordControl.setRecordLocation(videoPath + "RecordedVideo.3gp");

复制RIM演示时，我遇到相同的问题，但这是错误的. 使用setRecordStream()代替.

I have the same issue when I copied the RIM demo, but it is wrong. use setRecordStream() instead.

这篇关于RIM黑莓Record 3GP视频的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！