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How to record webcam and audio using webRTC and a server-based Peer connection
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You should definitely have a look at Kurento. It provides a WebRTC server infrastructure that allows you to record from a WebRTC feed and much more. You can also find some examples for the application you are planning here. It is really easy to add recording capabilities to tha...
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...s a value? Here’s a hint:
h[42] #=> ["a", "b"]
The array returned by each [] call is just the default value, which we’ve been mutating all this time so now contains our new values. Since << doesn’t assign to the hash (there can never be assignment in Ruby without an = present†),...
How to export all data from table to an insertable sql format?
...ally you select all except identity column, which will be auto incremented by default.
In case if you dont have existing B_table in B_db
SELECT *
INTO B_db.dbo.B_table
FROM A_db.dbo.A_table
will create table B_table in database B_db with all existing values
...
How to find a Java Memory Leak
...ver it is called. Basically, I can tell that there are several hundred megabytes of hash table entries ([java.util.HashMap$Entry or something like that), but maps are used all over the place... Is there some way to search for large maps, or perhaps find general roots of large object trees?
...
Android - styling seek bar
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I would extract drawables and xml from Android source code and change its color to red.
Here is example how I completed this for mdpi drawables:
Custom red_scrubber_control.xml (add to res/drawable):
<selector xmlns:android="http://schemas.android.com/apk/res/and...
What is the optimal length for an email address in a database?
...nstraint; under INNODB and utf8 varchar(254) is small enough (less than 767bytes) to have a unique constraint and varchar(300) is not.
– Autonomy
Apr 11 '13 at 19:14
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In Windows cmd, how do I prompt for user input and use the result in another command?
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Try this:
@echo off
set /p id="Enter ID: "
You can then use %id% as a parameter to another batch file like jstack %id%.
For example:
set /P id=Enter id:
jstack %id% > jstack.txt
...
What is an xs:NCName type and when should it be used?
...lified name e.g. "ns:name". If your names are not supposed to be qualified by different namespaces, then they are NCNames.
xs:string puts no restrictions on your names at all, but xs:NCName basically disallows ":" to appear in the string.
...
When to use self over $this?
...>bar();
?>
Here is an example of suppressing polymorphic behaviour by using self for member functions:
<?php
class X {
function foo() {
echo 'X::foo()';
}
function bar() {
self::foo();
}
}
class Y extends X {
function foo() {
echo 'Y::foo()';...
How to set the thumbnail image on HTML5 video?
...ise it will still show a black background on IE until the video was loaded by the browser!
– Hafenkranich
Jul 10 '17 at 7:39
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