Using Coursera-dl to Download Lecture Videos and Materials From Coursera.org

https://github.com/dgorissen/coursera-dl

http://nazarovsky.ru/2014/08/18/using-coursera-dl-to-download-lecture-videos-and-materials-from-coursera.org/

icon in Tcl/Tk window

from tkinter import *
root = Tk()

root.iconbitmap(r'c:\Python32\DLLs\py.ico')
root.mainloop()

ffmpeg MPEG-4 Encoding Guide

ffmpeg -i input.avi -c:v libxvid output.avi
ffmpeg -i input.avi -c:v mpeg4 -vtag xvid output.avi

Variable Bit Rate with qscale
ffmpeg -i input.avi -c:v mpeg4 -vtag xvid -qscale:v 3 -c:a libmp3lame -qscale:a 4 output.avi

Constant Bit Rate
You can target a bitrate with -b:v.
This is best used with two-pass encoding.
Adapting an example from the x264 encoding guide: your video is 10 minutes (600 seconds) long and an output of 50 MB is desired. Since bitrate = file size / duration:(50 MB * 8192 [converts MB to kilobits]) / 600 seconds = ~683 kilobits/s total bitrate 683k - 128k (desired audio bitrate) = 555k video bitrate

Two-pass example
ffmpeg -y -i input.avi -c:v mpeg4 -vtag xvid -b:v 555k -pass 1 -an -f avi /dev/null
ffmpeg -i input.avi -c:v mpeg4 -vtag xvid -b:v 555k -pass 2 -c:a libmp3lame -b:a 128k output.avi

Note: Windows users should use NUL instead of /dev/null.

https://trac.ffmpeg.org/wiki/Encode/MPEG-4

SoX − Sound eXchange, the Swiss Army knife of audio manipulation

http://sox.sourceforge.net/sox.html

ffmpeg -ss 10 -t 6 -i input.mp3 output.mp3

ffmpeg -ss 10 -to 16 -i input.mp3 output.mp3

sox input.mp3 output.mp3 trim 10 6

GPU performance

geforce 650m ~ 100 million samples / sec.

geforce970gtx ~ 600-800 million samples / sec.

Start Maya from the command line

http://knowledge.autodesk.com/support/maya/learn-explore/caas/CloudHelp/cloudhelp/2015/ENU/Maya/files/Interface-overview-Start-Maya-from-the-command-line--htm.html

Your 3D model online

Currently is very easy to share your work to public. And quality of rendering is really good!
This site support even PBR rendering, normal maps etc, and works very fast.
www.sketchfab.com/renderman.pro

and other site, but not so advanced
www.p3d.in

How to make hibernation unavailable in Windows

To make hibernation unavailable, follow these steps:

1. Click Start, and then type cmd in the Start Search box.
2. In the search results list, right-click Command Prompt, and then click Run as Administrator.
3. When you are prompted by User Account Control, click Continue.
4. At the command prompt, type powercfg.exe /hibernate off, and then press Enter.
5. Type exit, and then press Enter to close the Command Prompt window.

exiftool - modify photo camera data in jpg files

exiftool -overwrite_original -Lens="Nikkor 50mm f/1.4 Ais" -ApertureValue="1.4" -FNumber="1.4" -FocalLength="50" *.jpg

3d-coat - All Hot Keys

http://www.3d-coat.com/wiki/index.php/10.1_All_Hot_Keys

Nvidia graphics processing units

List of Nvidia graphics processing units
https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units#Comparison_tables:_Desktop_GPUs

http://www.geforce.com/hardware/notebook-gpus/geforce-gt-650m/specifications
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-970/specifications
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-980-ti/specifications

ffmpeg - extract images from video and use another filter at the same time

Extract images from any video and scale it down by 2 at the same time

ffmpeg -i 20150711164121.m2ts -vf "fps=5, scale=iw/2:ih/2" -qscale:v 2 img%03d.jpg

Make your PC from parts

If you wanna buy new computer how to make right choice from hundreds configurations? How to compare CPU/GPU?

There are great sites:

 http://cpuboss.com/
 http://gpuboss.com/
 http://ssdboss.com/

and THE BEST site ever of any kind:

https://pcpartpicker.com/

This site help to build your own PC, choose right component AND analyze online stores to check lowest price!

VisualSFM : A Visual Structure from Motion System

http://flightriot.com/tutorials/post-processing/

http://ccwu.me/vsfm/
https://groups.google.com/forum/#!forum/vsfm

https://www.youtube.com/watch?v=ZRTEMKS3Sw0
https://www.youtube.com/watch?v=SHa_LBIzDac
---------------------------------------------------------------
KinectFusion - Real-time 3D Reconstruction
https://www.youtube.com/watch?v=bRgEdqDiOuQ

3D scanning for free!

Great tutorial how to use free programs to recreate real object to 3D model from photos.

https://www.youtube.com/watch?v=D6eqW6yk50k
(by philnolan3d.com)

Software you'll need:
Visual SFM (CUDA version if you use nVidia)
http://ccwu.me/vsfm/

CMVS For Windows
http://www.di.ens.fr/cmvs/

Meshlab
http://meshlab.sourceforge.net/