How to remove the audio track from an AVI file (using mencorder)

Issue the command from the folder in which the files are located. Change the .avi file names to the relevant ones.

Using the following command one can remove the audio track from an AVI file.
mencoder -ovc copy -nosound video.avi -o video_nosound.avi

The following command will add a new track to the AVI file.
mencoder -ovc copy -audiofile soundtrack.mp3 -oac copy video_nosound.avi -o video_new.avi

How to Rotate a Video Taken by a Camera Using Mencoder

It was really essential to rotate a video before you post on to your blog or somewhere else if the video is taken in the other orientation from your camera. If you have mencoder, you can fire this command on the command line (I am considering Linux) from the place that you have your video file that you want to rotate.

mencoder -vf rotate=1 -ovc lavc -oac copy name_of_your_video_file.avi -o new_name_of_the_converted_file.avi

Change the names of the video file as described. Write the command continuously on the command line with relevant spaces.

If you don't have MPlayer or Mencoder you can download it from here.
http://www.mplayerhq.hu/design7/dload.html

Nautilus Scripts

Nautilus scripts are scripts embedded to nautilus file manager which is the official file manager in GNOME. These scripts can be run from the menu you get by right clicking somewhere, probably on a file so that you can fire an instant command on that file.

There were lacking some scripts for linux earlier but now it is not true anymore. These two scripts will be very useful to anyone who works with images and videos frequently.

1. nautilus-image-converter
You can just run this command on the command line
sudo apt-get install nautilus-image-converter
2. nautilus video converter
http://ubuntuforums.org/showthread.php?t=193754
Click on the link and follow the instructions given by the author carefully.

Enjoy the scripts.

Cheers

Lynda.com Ruby on Rails Training

Lynda.com provides multimedia learning experience to many computing subjects and I found that this Ruby on Rails training videos to be very interesting.

*Ruby on Rails Essential Training
*Ruby on Rails Beyond the Basics

cheers ;)