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How can I extract a good quality JPEG image from a video file with ffmpeg?
...2).
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This will work with any vid...
Replace one character with another in Bash
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405
Use inline shell string replacement. Example:
foo=" "
# replace first blank only
bar=${foo/ ...
Drop multiple tables in one shot in mysql
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Leniel MaccaferriLeniel Maccaferri
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Prevent wrapping of span or div
...white-space: nowrap;
}
.slide {
display: inline-block;
width: 600px;
white-space: normal;
}
<div class="slideContainer">
<span class="slide">Some content</span>
<span class="slide">More content. Lorem ipsum dolor sit amet, consectetur adipisicing ...
Show a number to two decimal places
...):
return number_format((float)$number, 2, '.', '');
Example:
$foo = "105";
echo number_format((float)$foo, 2, '.', ''); // Outputs -> 105.00
This function returns a string.
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Insert string at specified position
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+50
$newstr = substr_replace($oldstr, $str_to_insert, $pos, 0);
http://php.net/substr_replace
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How to make execution pause, sleep, wait for X seconds in R?
...ible
}
testit(3.7)
Yielding
> testit(3.7)
user system elapsed
0.000 0.000 3.704
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.NET 4.0 build issues on CI server
Anybody manage to get .NET 4.0 applications compiling on a CI server without installing Visual Studio 2010 on a CI server?
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How to escape quote marks in Exec Command in MSBuild
...mmand attribute value :
<Exec Command="net use x: &quot;\\ofmapoly703\c$\program files\ar\iap&quot; /user:$(UserID) $(Password)"
WorkingDirectory="c:\"
ContinueOnError="false"
/>
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Razor View Engine : An expression tree may not contain a dynamic operation
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301
It seems to me that you have an untyped view. By default, Razor views in MVC3 RC are typed as d...