从网址下载SDCard上的视频 [英] Download Video on SDCard from url

问题描述

我正在申请从网址下载sdcard上的视频。我提到这个链接。但是这个链接包含了.mp4格式的URL。我必须下载新闻Feed视频。我的格式不是.mp4格式。它将主要是.swf。
我的url是，

I am having an application to download video on sdcard from url. I refer this link. But this link contains the url as .mp4 format. I have to download news feed videos. My format is not .mp4 format. It will be mostly .swf. The url of mine is,

http://cdnapi.kaltura.com/index.php/kwidget/wid/_483511 / uiconf_id / 5590821 / entry_id / 0_cf39ej0c

我通过解析rss feed（news feed）得到这个url。

I was getting this url by parsing rss feed( news feed).

我的代码是：

public class MainActivity extends Activity {
    public final String TAG = "MainActivity";
    private final String PATH = "/sdcard/downloadVideo/";
    private final int TIMEOUT_CONNECTION = 5000;// 5sec
    private final int TIMEOUT_SOCKET = 300000;// 30sec
    //public final String imageURL = "http://www.cbsnews.com/video/watch/?id=50149183n&tag=api";
    public final String imageURL = "http://cdnapi.kaltura.com/index.php/kwidget/wid/_483511/uiconf_id/5590821/entry_id/0_cf39ej0c";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        DownloadFromUrl(imageURL, PATH);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    public void DownloadFromUrl(String VideoURL, String fileName) { // this is
                                                                    // the
                                                                    // downloader
                                                                    // method
        try {
            URL url = new URL(VideoURL);
            long startTime = System.currentTimeMillis();
            Log.i(TAG, "image download beginning: " + VideoURL);

            // Open a connection to that URL.
            URLConnection ucon = url.openConnection();

            // this timeout affects how long it takes for the app to realize
            // there's a connection problem
            ucon.setReadTimeout(TIMEOUT_CONNECTION);
            ucon.setConnectTimeout(TIMEOUT_SOCKET);

            // Define InputStreams to read from the URLConnection.
            // uses 3KB download buffer
            InputStream is = ucon.getInputStream();
            BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 5);
            FileOutputStream outStream = new FileOutputStream(fileName);
            byte[] buff = new byte[5 * 1024];

            // Read bytes (and store them) until there is nothing more to
            // read(-1)
            int len;
            while ((len = inStream.read(buff)) != -1) {
                outStream.write(buff, 0, len);
            }

            // clean up
            outStream.flush();
            outStream.close();
            inStream.close();

            Log.i(TAG, "download completed in "
                    + ((System.currentTimeMillis() - startTime) / 1000)
                    + " sec");

        } catch (IOException e) {
            Log.d("VideoManager", "Error: " + e);
        }

    }
}

但是无法获得此视频？

But I couldn't get this video?

其实我正在试图实现视频流。但是我不知道该怎么做。

Actually I am trying to achieve video streaming. But I don't know that how to do it.

我的代码有错吗？

请提出建议，以达到上述目的。

Please give your suggestion to achieve the above.

提前谢谢！

推荐答案

尝试这样：

而不是手动定义SD卡的路径，请使用

Instead of defining the path to the SD card manually, use

String Path = Environment.getExternalStorageDirectory().getPath();

并在其后添加一个文件名，如

and add a file name behind that, like

String filename = Path + "/filename.mp4"

并将这些 filename 字符串传递给您的 FileOutputStream 。

and pass these filename strings to your FileOutputStreams.

编辑

而不是下载文件，直接使用VideoView直接查看，代码如下：

Instead of downloading the file, view it directly using VideoView, with code like this:

VideoView mVideoView;
MediaController mcon;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.videoplay);
    mVideoView = (VideoView) findViewById(R.id.videoview);
    String videourl="http://cdnapi.kaltura.com/index.php/kwidget/wid/_483511/uiconf_id/5590821/entry_id/0_cf39ej0c";
    mcon.setMediaPlayer(mVideoView); // add this line
    mcon = new MediaController(this);
    mVideoView.setMediaController(mcon);
    mVideoView.requestFocus();
    mVideoView.setVideoURI(Uri.parse(videourl));
    mcon.show();
    mVideoView.start();
}

不要忘了在 androidmanifest中提及互联网权限.xml ：

<uses-permission android:name="android.permission.INTERNET" />

这篇关于从网址下载SDCard上的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IT屋！