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How can I extract a good quality JPEG image from a video file with ffmpeg?

...ical file sizes and (to my naked eye) appear the same as without qscale at all. – felwithe Jan 28 '15 at 23:03 Can you...
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How to determine the encoding of text?

... Correctly detecting the encoding all times is impossible. (From chardet FAQ:) However, some encodings are optimized for specific languages, and languages are not random. Some character sequences pop up all the time, while other sequences make no...
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SQL Case Sensitive String Compare

...al_CS_AS) – Hypnovirus Jun 5 '14 at 15:41 2 Thanks but what is Latin1_General_CS_AS ?? Is it spe...
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关于 __VA_ARGS__ 宽字符版本的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

关于 __VA_ARGS__ 宽字符版本的问题在写一个可变参数的记录日志函数,考虑到宽字符(Unicode版本)时:#define WIDEN2(x) L ## x#define WIDEN(x) WIDEN2(x)#define __...在写一个可变参数的记录日志函数,考虑到宽字符(Unicode版本)时: #defin...
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How can a Javascript object refer to values in itself? [duplicate]

...u have nested keys. – Green Sep 29 '15 at 3:26 1 @Green True, but you could always assign it to a...
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How do I get the information from a meta tag with JavaScript?

... What you really want is 'let' to keep them locally defined ;) – tommed Mar 23 '15 at 21:54 26 ...
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How do you calculate program run time in python? [duplicate]

... | edited Aug 15 '18 at 1:06 Tanya Branagan 15511 gold badge33 silver badges1616 bronze badges ...
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Google Maps v3 - limit viewable area and zoom level

is it possible to limit Google map v3 to a certain area? I want to allow displaying only some area (e.g. a country) and disallow the user to slide elsewhere. Also I want to restrict the zoom level - e.g. only between levels 6 and 9. And I want to use all the base map types. ...
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How to create a date object from string in javascript [duplicate]

... Serhat Ates 67711 gold badge88 silver badges1515 bronze badges answered Nov 22 '11 at 9:27 Christopher TokarChristopher Tokar ...
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difference between primary key and unique key

...d on multiple columns, e.g. Primary key (CustomerID, ProductID). This is called composite primary key. This is to clarify the first point, as it might be take as it is (read one key => one column ) by new comer to sql : ) – ken Apr 10 '14 at 13:53 ...