視頻取首幀，並保存到SDCard

/**

* 視頻取首幀，並保存到SDCard

* @param videoPath

* @param saveThumPath

* @return

*/

public static Bitmap saveVideoThumbnail(String videoPath, String saveThumPath) {

Bitmap bitmap = null;

MediaMetadataRetriever retriever= new MediaMetadataRetriever();

try {

retriever.setDataSource(videoPath);

bitmap = retriever.getFrameAtTime(100);

ImageUtil.cropAndRotate(bitmap, 0, saveThumPath);

} catch (Exception ex){

} finally {

try {

retriever.release();

} catch (RuntimeException ex){}

}

return bitmap;

}