TheJoe.it Into the (open) source

26Jul/120

Sterilize a hard drive with “dd”

shell

In today's article we deal with the deletion of data. Sometimes you get to have a huge amount of discs, accumulated over the years, which were once (not anymore) that now have no reason to exist in our drawer. Okay that storage space is never too, but drives off in a drawer I have never served very. This guide will be useful to all those who are going to sell a record, but they do not trust to the end because the user to whom you sell it might get your personal information.

At this point we must make a necessary clarification.

18Jul/122

Slow down a video “mencoder”, “ffmpeg” and “sox”

video

Today we still talk about video editing command line, ffmpeg as well as we will see in broad terms how they work mencoder and sox: is the first part of the project "mplayer", the second helps us in defining audio. The end result of this tutorial will be the original video (including audio) slowed. In short will last twice.

To begin with we must have a video format "mp4". If we use our size differs ffmpeg by convertirlo.

10Jul/123

Photography: “time lapse” con gPhoto2

20d_time_lapse

Today I raised the issue of "time lapse", a particular photographic technique that through the sequence of shots allows the creation of small animations. To get an idea of ​​what the time lapse, I refer you to spectacular video easily available on youtube, or rather those dedicated of this page.

For the good time lapse is necessary to automate the process of shooting, in practice less personal things are entrusted to the skill, the better the end result.

2Jul/120

Photography: remote shutter release with gPhoto2

gphoto2

In today's tutorial we see some small function gPhoto2, a program command-line oriented * NIX systems which in addition to other functions, allows us to access some of the functionality "hidden" (or non-advertised) of our cameras.

It should be stated at the outset that not all cameras are supported. The complete list is available on the manuale online application.

The operation is very simple. Configure the camera (io face you Canon EOS 20d) so that the USB connection is of type PTP (under the menu "Communication" - "PTP").