Great video, the title says it all. The Code : The Story of Linux. Found this in my G+ Stream and thought it was great. Thanks +JayVan Geli
My Linux skills have been limited to a basic install, and getting around in the system. I've recently decided to take the O.S. more seriously and become a full time user and more of a Linux hobbyist. This is a place for me to post notes, and other helpful information. The information here is centered around Fedora and KDE but I do post about other GNU/Linux distributions. You can find useful notes, book reviews, tutorials, videos, and whatever else I think will be useful for learning this O.S.
Showing posts with label video. Show all posts
Showing posts with label video. Show all posts
Tuesday, October 7, 2014
Monday, August 11, 2014
Video : Nixie Pixel Explains the Linux File System.
Just playing around on Youtube and came across this video. Nixie Pixel gives a quick tour and explanation of the Linux file system. Very informative, and explains a lot in under 6 minutes.
Thursday, June 13, 2013
CLI Youtube Downloader youtube-dl Linux
Every so often you come across a video on Youtube that you really want. Youtube downloaders come and go. Some work for a long time some work for a couple months. Youtube-dl is a simple CLI for Linux that works great for the time being, allows you to download in multiple formats, and is fairly simple to use. The man pages for the program are very easy to read and almost self explanatory.
With Fedora I simply opened up my terminal program, typed:
yum install youtube-dl
and yum did all the work for me. The CLI was installed and I read through the man pages.
man youtube-dl
For the sake of this tutorial I'll just go through the basics to get the program doing what it's supposed to do. For further info just read the man pages.
Go to youtube, find a video you want to download.
Now open up your terminal program , I use Konsole, and type:
youtube-dl -F youtube.com/video_url_here
Replace the last part of the command with the youtube page url that has your video.
This command will show you the different formats the video is available in. Here's an example of the output:
[youtube] Setting language
[youtube] kb9dxfsPdQs: Downloading video webpage
[youtube] kb9dxfsPdQs: Downloading video info webpage
[youtube] kb9dxfsPdQs: Extracting video information
Available formats:
44 : webm [480x854]
35 : flv [480x854]
43 : webm [360x640]
34 : flv [360x640]
18 : mp4 [360x640]
5 : flv [240x400]
17 : mp4 [144x176]
Once you know the file format you want, simply type:
youtube-dl -f 18 youtube.com/video_url_here
and youtube-dl downloads the video in the file format of your choice. That's it, your done ! Notice -F capital letter gives you the file format, -f lower case with the number in my case 18 downloads the video in mp4 format. If you were to select -f 34 the file would be downloaded as an flv file.
That's the basics, the program offers a few other options, read through the man pages for more info. At the time of this writing the program works great, youtube downloaders tend to come and go. As youtube changes things, programs become outdated and stop working. For the time being this is my downloader of choice. Happy downloading !
With Fedora I simply opened up my terminal program, typed:
yum install youtube-dl
and yum did all the work for me. The CLI was installed and I read through the man pages.
man youtube-dl
For the sake of this tutorial I'll just go through the basics to get the program doing what it's supposed to do. For further info just read the man pages.
Go to youtube, find a video you want to download.
Now open up your terminal program , I use Konsole, and type:
youtube-dl -F youtube.com/video_url_here
Replace the last part of the command with the youtube page url that has your video.
This command will show you the different formats the video is available in. Here's an example of the output:
[youtube] Setting language
[youtube] kb9dxfsPdQs: Downloading video webpage
[youtube] kb9dxfsPdQs: Downloading video info webpage
[youtube] kb9dxfsPdQs: Extracting video information
Available formats:
44 : webm [480x854]
35 : flv [480x854]
43 : webm [360x640]
34 : flv [360x640]
18 : mp4 [360x640]
5 : flv [240x400]
17 : mp4 [144x176]
Once you know the file format you want, simply type:
youtube-dl -f 18 youtube.com/video_url_here
and youtube-dl downloads the video in the file format of your choice. That's it, your done ! Notice -F capital letter gives you the file format, -f lower case with the number in my case 18 downloads the video in mp4 format. If you were to select -f 34 the file would be downloaded as an flv file.
That's the basics, the program offers a few other options, read through the man pages for more info. At the time of this writing the program works great, youtube downloaders tend to come and go. As youtube changes things, programs become outdated and stop working. For the time being this is my downloader of choice. Happy downloading !
Sunday, April 21, 2013
Convert flv clips to mpg and Combine To Make One Long Video.
I had a ton of flv files on my computer and I decided I wanted to convert them to mpg files and then combine them to make a large compilation video. Each video was approximately 5 to 15 minutes in length and I wanted one complete video that ran a little over an hour. Here's what I did.
I found two programs that run from the command line that were perfect for the task at hand. The first program I found was FFmpeg, this program is capable of taking the flv file and converting it to mpg or avi, and I think a couple other formats as well. The other useful program I found was mpgtx, this program is capable of taking multiple mpg files and then combines them to make one giant video file.
It's important to note both these programs have other uses, and I'm barely scraping the surface of what these programs are capable of with this post. However, if your looking to accomplish the same type of project this short post should at least get you headed in the right direction.
Using Fedora I downloaded both programs using yum.
su
yum install ffmpeg
and then
yum install mpgtx.
Yum found the programs, found the dependencies, and installed with no problem. I believe both these programs are also available at sourceforge.net
I then created a directory in my Videos folder and named it project, I copied my flv files that I wanted to work with to that directory. Then using Konsole I went to that directory.
cd username/Videos/project
I then attempted to convert the files with ffmpeg. The first attempt I made was using the basic commands and settings. The program worked great but the video was a bit grainy. FFmpeg is very verbose while it converts the files so I looked at the files pixel size, and then decided to do an exact copy of the video and sound which fixed the image quality but made the video choppy. I then did a bit of research and settled on :
ffmpeg -i filename1.flv -target ntsc-dvd -b 2000k -acodec mp2 -ar 22050 -ab 64k -aspect 4:3 filename1.mpg
For the sake of not writing a dissertation on this program I'll add some links at the bottom as to the different commands and attributes and you can do your own research. The above command however really took care of my problem. The video was converted to about the same quality as the original, no more skipping in frames, and the sound quality seemed perfect. After this I took about nine flv files and simply repeated the above process with each one.
Now that I had the flv files all converted I then used mpgtx to combine them into one video. This couldn't of been easier. I simply used the following command and mpgtx did the rest.
mpgtx -j filename1.mpg filename2.mpg filename3.mpg filename4.mpg filename5.mpg filename6.mpg -o yourOutputFilnameHere.mpg
This combined all the 5 to 15 minute clips into a 1 hour and 7 minute video. There was no reduction in quality that I noticed and overall I was very pleased with the end result of this project.
As I stated earlier I could write a dissertation on the use of these two programs. This post was not meant to be a tutorial but simply a review of the programs, the basics of how they work, and a review of the basic research I did to make the programs do what I wanted for this particular project. For more information on these programs and all they have to offer you can check out the following links.
mpgtx http://mpgtx.sourceforge.net/#Examples
ffmpeg http://howto-pages.org/ffmpeg/
The above links were the two that I found most useful. There is a ton of information all over the web about these two programs so feel free to do your own research. I plan on learning a lot more about these two programs and will probably be adding some more information and tutorials about these programs to the blog.
I found two programs that run from the command line that were perfect for the task at hand. The first program I found was FFmpeg, this program is capable of taking the flv file and converting it to mpg or avi, and I think a couple other formats as well. The other useful program I found was mpgtx, this program is capable of taking multiple mpg files and then combines them to make one giant video file.
It's important to note both these programs have other uses, and I'm barely scraping the surface of what these programs are capable of with this post. However, if your looking to accomplish the same type of project this short post should at least get you headed in the right direction.
Using Fedora I downloaded both programs using yum.
su
yum install ffmpeg
and then
yum install mpgtx.
Yum found the programs, found the dependencies, and installed with no problem. I believe both these programs are also available at sourceforge.net
I then created a directory in my Videos folder and named it project, I copied my flv files that I wanted to work with to that directory. Then using Konsole I went to that directory.
cd username/Videos/project
I then attempted to convert the files with ffmpeg. The first attempt I made was using the basic commands and settings. The program worked great but the video was a bit grainy. FFmpeg is very verbose while it converts the files so I looked at the files pixel size, and then decided to do an exact copy of the video and sound which fixed the image quality but made the video choppy. I then did a bit of research and settled on :
ffmpeg -i filename1.flv -target ntsc-dvd -b 2000k -acodec mp2 -ar 22050 -ab 64k -aspect 4:3 filename1.mpg
For the sake of not writing a dissertation on this program I'll add some links at the bottom as to the different commands and attributes and you can do your own research. The above command however really took care of my problem. The video was converted to about the same quality as the original, no more skipping in frames, and the sound quality seemed perfect. After this I took about nine flv files and simply repeated the above process with each one.
Now that I had the flv files all converted I then used mpgtx to combine them into one video. This couldn't of been easier. I simply used the following command and mpgtx did the rest.
mpgtx -j filename1.mpg filename2.mpg filename3.mpg filename4.mpg filename5.mpg filename6.mpg -o yourOutputFilnameHere.mpg
This combined all the 5 to 15 minute clips into a 1 hour and 7 minute video. There was no reduction in quality that I noticed and overall I was very pleased with the end result of this project.
As I stated earlier I could write a dissertation on the use of these two programs. This post was not meant to be a tutorial but simply a review of the programs, the basics of how they work, and a review of the basic research I did to make the programs do what I wanted for this particular project. For more information on these programs and all they have to offer you can check out the following links.
mpgtx http://mpgtx.sourceforge.net/#Examples
ffmpeg http://howto-pages.org/ffmpeg/
The above links were the two that I found most useful. There is a ton of information all over the web about these two programs so feel free to do your own research. I plan on learning a lot more about these two programs and will probably be adding some more information and tutorials about these programs to the blog.
Thursday, December 20, 2012
video How Linux Is Built
Thought this was interesting and worth posting here. This is a video from the Linux Foundation, that explains how Linux is built.
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