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How to create a video from images with FFmpeg?
...ead of -r for the output framerate
ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
Alternatively the format video filter can be added to the filter chain to replace -pix_fmt yuv420p like "fps=25,format=yuv420p". The advantage of this method is that you can contro...
What is a predicate in c#? [duplicate]
... in your question:
Predicate<int> pre = delegate(int a){ return a % 2 == 0; };
Here we have a Predicate<int> pre that takes an int a and returns a % 2 == 0. This is essentially testing for an even number. What that means is:
pre(1) == false;
pre(2) == true;
And so on. This also mea...
Add a default value to a column through a migration
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answered Aug 17 '11 at 20:02
Maurício LinharesMaurício Linhares
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Should I use #define, enum or const?
...s no need for the typedef in C++.
enum TRecordType { xNew = 1, xDeleted = 2, xModified = 4, xExisting = 8,
Create another member for an invalid state. This can be useful as error code; for example, when you want to return the state but the I/O operation fails. It is also useful for debugging; use...
How to get a variable name as a string in PHP?
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Psql list all tables
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204
If you wish to list all tables, you must use:
\dt *.*
to indicate that you want all tables ...
NUnit Test Run Order
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edited May 11 '12 at 7:18
Arion
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answer...
psql: FATAL: Peer authentication failed for user “dev”
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How can I add a column that doesn't allow nulls in a Postgresql database?
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2
To clarify: the default value is only needed to update existing rows, which is why it can be dropped immediately afterwards. All existing ro...
Test for multiple cases in a switch, like an OR (||)
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582
You can use fall-through:
switch (pageid)
{
case "listing-page":
case "home-page":
...