大约有 43,000 项符合查询结果（耗时：0.0504秒） [XML]
Fastest way to extract frames using ffmpeg?
... video 38m07s long:
time ffmpeg -i input.mp4 -filter:v fps=fps=1/60 ffmpeg_%0d.bmp
1m36.029s
This takes long because ffmpeg parses the entire video file to get the desired frames.
time for i in {0..39} ; do ffmpeg -accurate_seek -ss `echo $i*60.0 | bc` -i input.mp4 -frames:v 1 period_down_$i....
What column type/length should I use for storing a Bcrypt hashed password in a Database?
...or MySQL I’ll recommend to use the CHAR(60) BINARYor BINARY(60) (see The _bin and binary Collations for information about the difference).
CHAR is not binary safe and equality does not depend solely on the byte value but on the actual collation; in the worst case A is treated as equal to a. See Th...
UISegmentedControl below UINavigationbar in iOS 7
...WillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self _moveHairline:YES];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self _moveHairline:NO];
}
- (void)_moveHairline:(BOOL)appearing
{
// move the hairline below the segmentbar
...
Where in an Eclipse workspace is the list of projects stored?
...d up fixing these files in place with (D:->F:) sfk replace -pat -binary _5552492F2F66696C653A2F443A2F_5552492F2F66696C653A2F463A2F_ -dir .metadata\.plugins\org.eclipse.core.resources\.projects -file .location
– mgaert
Oct 2 '14 at 12:10
...
What are libtool's .la file for?
... # Static library
/lib/libfoo.la # libtool library
/bin/cygfoo_1.dll # DLL
Under Windows MinGW:
/lib/libfoo.dll.a # Import library
/lib/libfoo.a # Static library
/lib/libfoo.la # 'libtool' library
/bin/foo_1.dll # DLL
So libfoo.la is the only file that is p...
Why would one omit the close tag?
...ng <?php is characterized as PHPs shebang (and fully feasible per binfmt_misc), thereby validating the redundancy of a corresponding close tag.
There's an obvious advise discrepancy between classic PHP syntax guides mandating ?>\n and the more recent ones (PSR-2) agreeing on omission.
(For the...
How to increment a datetime by one day?
...vedelta
print 'Today: ',datetime.now().strftime('%d/%m/%Y %H:%M:%S')
date_after_month = datetime.now()+ relativedelta(day=1)
print 'After a Days:', date_after_month.strftime('%d/%m/%Y %H:%M:%S')
Output:
Today: 25/06/2015 20:41:44
After a Days: 01/06/2015 20:41:44
...
How to mock ConfigurationManager.AppSettings with moq
...
}
public class ClassUnderTest
{
private readonly NameValueCollection _settings;
public ClassUnderTest(NameValueCollection settings)
{
_settings = settings;
}
public void MethodUnderTest()
{
// get the User from Settings
string user = _settings["Use...
Resharper- Find all unused classes
...hing like the following :
public class IoC
{
private WindsorContainer _container;
private IoC()
{
_container = new WindsorContainer();
}
public static void RegisterFromAssembly(Assembly assembly, string classEndsWith, LifeTime lifeTime)
{
var lifestyle = C...
Disable cache for some images
...ading on the fly generated php chart image, and controlling the page with $_GET parameters. I wanted the image to be read from cache when the URL GET parameter stays the same, and do not cache when the GET parameters change.
To solve this problem, I needed to hash $_GET but since it is array here i...