Android中如何获取视频文件的截图、缩略图

/**
* 获取视频文件截图
*
* @param path 视频文件的路径
* @return Bitmap 返回获取的Bitmap
*/
public static Bitmap getVideoThumb(String path) {
MediaMetadataRetriever media = new MediaMetadataRetriever();
media.setDataSource(path);
return media.getFrameAtTime();
}
/**
* 获取视频文件缩略图 API>=8(2.2)
*
* @param path 视频文件的路径
* @param kind 缩略图的分辨率：MINI_KIND、MICRO_KIND、FULL_SCREEN_KIND
* @return Bitmap 返回获取的Bitmap
*/
public static Bitmap getVideoThumb2(String path, int kind) {
return ThumbnailUtils.createVideoThumbnail(path, kind);
}
public static Bitmap getVideoThumb2(String path) {
return getVideoThumb2(path, MediaStore.Video.Thumbnails.FULL_SCREEN_KIND);
}

/**
* Bitmap保存成File
*
* @param bitmap input bitmap
* @param name output file's name
* @return String output file's path
*/
public static String bitmap2File(Bitmap bitmap, String name) {
File f = new File(Environment.getExternalStorageDirectory() + name + ".jpg");
if (f.exists()) f.delete();
FileOutputStream fOut = null;
try {
fOut = new FileOutputStream(f);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
fOut.flush();
fOut.close();
} catch (IOException e) {
return null;
}
return f.getAbsolutePath();
}