ao2's blog

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vidi: MIDI-driven video content editing

One of the first YouTube video I remember is Hyperactive by Lasse Gjertsen:


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Tweeper 1.0.0 released, with PHP composer support

Tweeper is a web scraper which converts Twitter and other social media websites to RSS.

On December 11th 2016 version 1.0.0 of Tweeper has been released. The tweeper Debian package has also been updated.


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Capturing a screenshot of the GDM login screen

These days GDM on Debian is running using Wayland, so the classic way of taking a screenshot using the X protocol does not work:

# Sleeping before launching the command allows to switch to the login screen
# before the screen gets actually captured.
#
# Otherwise if the login screen is not visible, only a black image will be
# captured.
sleep 6

sudo -u Debian-gdm\
  DISPLAY=:0 \
  XAUTHORITY=/var/run/user/109/gdm/Xauthority \
  import -display :0 -win root /tmp/GDM-screenshot.png"

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Launching the Windows Recovery Environment

A friend of mine had a problem with his Windows 10 installation: the system booted but it was unresponsive, so it was not possible to enter the Windows Recovery Environment from Windows.


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Experimenting with Gtk+ theme variants: Adwaita red

Most Gtk+ themes offer a “light” and a “dark” variant, however I found out that these names are just conventional: a Gtk+ theme can define variants with arbitrary names, so maybe this can be used for some fun stuff.


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Remove images from PDF files

Some times ago I ran into some Service Manuals with unusual background images:


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Tweeper 0.6 released, Twitter to RSS, with images

On May 23rd 2016 version 0.6 of tweeper has been released.


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SaveMySugar: exchange messages using only phone rings

From “The Lord of the Phone-Rings”, about SaveMySugar:

One RING after them all, one RING to end them,
One RING to get the... messages, and from Morse code decode 'em.

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libam7xxx-0.1.6 released

The libam7xxx-0.1.6 release is out; it's a maintenance release with no big new features.


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Automatic motion trail effect with OpenCV

You know that effect in some videos where objects moving in the scene leave a trail of their old position?