如何从视频文件图像 [英] How to get image from video file
本文介绍了如何从视频文件图像的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我是在韩国开发商。我有一些问题,所以我进入这个网站。
Hi i'm developer in korea. I have some question so i enter this site.
InputStream is;
URL url =
new URL("http://112.216.25.58:8888/VOD_LAUNCHER/media/youtube_sample3.mp4");
Uri uri = Uri.parse(url.toURI().toString());
is = getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(is);
//Bitmap bitmap = BitmapFactory.decodeFile(url.toString());
//MediaMetadataRetriever ret = new MediaMetadataRetriever();
//ret.setDataSource(url.toString());
//Bitmap bitmap = ret.getFrameAtTime(0);
//mImageView.setImageURI(uri);
//Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(uri.toString(), Thumbnails.MICRO_KIND);
mImageView.setImageBitmap(bitmap);
private Bitmap getPreview(URI uri) {
File image = new File(uri);
BitmapFactory.Options bounds = new BitmapFactory.Options();
bounds.inJustDecodeBounds = true;
BitmapFactory.decodeFile(image.getPath(), bounds);
if ((bounds.outWidth == -1) || (bounds.outHeight == -1))
return null;
int originalSize = (bounds.outHeight > bounds.outWidth) ? bounds.outHeight
: bounds.outWidth;
BitmapFactory.Options opts = new BitmapFactory.Options();
//opts.inSampleSize = originalSize / THUMBNAIL_SIZE;
return BitmapFactory.decodeFile(image.getPath(), opts);
}
private String getRealPathFromURI(Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
CursorLoader loader = new CursorLoader(getApplicationContext(),
contentUri, proj, null, null, null);
Cursor cursor = loader.loadInBackground();
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
我尝试使用ThumbnailUtil等,但没有奏效。
如何在Android 4.0得到ThumbnailImage?
感谢任何答复。
I try to use ThumbnailUtil and etc but it didn't work. How to get ThumbnailImage on android 4.0? Thanks any reply.
推荐答案
从API级别8你可以这样做:
From API level 8 you can just do this:
String path = /*get video path*/;
Bitmap thumb = ThumbnailUtils.createVideoThumbnail(path,
MediaStore.Images.Thumbnails.MINI_KIND);
尼斯和简单的:)
Nice and simple :)
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