大约有 40,000 项符合查询结果（耗时：0.0394秒） [XML]
Fastest way to extract frames using ffmpeg?
...actly which frames to extract, eg 1, 200, 400, 600, 800, 1000, try using:
select='eq(n\,1)+eq(n\,200)+eq(n\,400)+eq(n\,600)+eq(n\,800)+eq(n\,1000)' \
-vsync vfr -q:v 2
I'm using this with a pipe to Imagemagick's montage to get 10 frames preview from any videos. Obviously the frame numbers ...
Sockets: Discover port availability using Java
...ee = false;
}
return portFree;
}
EDIT: If all you're trying to do is select a free port then new ServerSocket(0) will find one for you.
share
|
improve this answer
|
fo...
Path of assets in CSS files in Symfony 2
...css, b.css, c.css, etc: all identical, just changing the color and the CSS selector.
.a
{
background: red url('../images/devil.png');
}
The "directories" structure is:
Directories
All this came, because I did not want the individual original files exposed to the public, specially if I want...
初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...插件目录我们能看到innodb_engine.so和libmemcached.so：
mysql> SELECT @@plugin_dir;
+------------------------------+
| @@plugin_dir |
+------------------------------+
| /usr/local/mysql/lib/plugin/ |
+------------------------------+
此外还需要导入Memcached插...
How do I activate a virtualenv inside PyCharm's terminal?
...
PyCharm 4 now has virtualenvs integrated in the IDE. When selecting your project interpreter, you can create, add, or select a virtualenv. They've added a "Python Console" that runs in the configured project interpreter.
More info here.
...
Why does integer division in C# return an integer and not a float?
...ation of the form x / y, binary operator overload resolution is applied to select a specific operator implementation. The operands are converted to the parameter types of the selected operator, and the type of the result is the return type of the operator.
The predefined division operators are ...
git - merge conflict when local is deleted but file exists in remote
...
In Git GUI, you select the conflicted file and then right-click on the main text area where the conflicted text is shown.
In the context menu that appears, you can choose to go with "Remote" or go with "Local". So if a file is remotely del...
Java Programming - Where should SQL statements be stored? [closed]
... @SingleShot, I don't agree. If it is something more complex than select by id, I think it is done with HQL. I would say criteria and example are used when doing user-interface driven search as in a search screen in a library catalog. But let's see what others think.
–...
Retrieving a List from a java.util.stream.Stream in Java 8
...0L, 80L, 100L, 120L, 133L, 333L);
LongList targetLongList = sourceLongList.select(l -> l > 100);
If you can't change the sourceLongList from List:
List<Long> sourceLongList = Arrays.asList(1L, 10L, 50L, 80L, 100L, 120L, 133L, 333L);
List<Long> targetLongList =
ListAdapter.a...
How to update a menu item shown in the ActionBar?
... set a condition in oncreateOptionMenu().
For example:
Boolean mISQuizItemSelected = false;
/**
* Called to inflate the action bar menus
*
* @param menu
* the menu
*
* @return true, if successful
*/
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu ite...