Month: March 2011

How to split flash (.flv) file to upload to youtube

Say, you have a huge flv flash file you want to upload to youtube.
You’ll find yourself in trouble as there is a limit to the filesize you can upload.
Where you needed to download and install bloatware in Windows to accomplish this,
it’s super easy in Linux.

ffmpeg will do the trick.
Say you want to cut the flash movie in pieces of 10 minutes, you can do this like this:

ffmpeg -i filename.flv -ss "00:00:00" -t "00:10:00" filename_chunk.flv
ffmpeg -i filename.flv -ss "00:10:00" -t "00:20:00" filename_chunk2.flv
ffmpeg -i filename.flv -ss "00:20:00" -t "00:30:00" filename_chunk3.flv
...

Now you’re ready to upload your video’s.

Ubuntu 10.10 and ATI Radeon HD 6870

So, quite some time ago I made the mistake of buying the ATI Radeon HD 6870 without first checking if it would play nice with my Ubuntu 10.10 desktop.
Turned out it didn’t 🙁

But now, there are proprietary Linux drivers released by ATI/AMD

  1. First, you should update your system (just to be sure).

    sudo apt-get update
    sudo apt-get upgrade

  2. If you’ve been using older drivers, remove them.

    sudo apt-get remove –purge xserver-xorg-video-radeon

  3. Download the install package from the AMD suppot pages and make it executable

    chmod +x ati-driver-installer*.run

  4. Run the installer as sudo-user

    sudo ./ati-driver-installer*.run

  5. Reboot

Enjoy!

The Linux 2.6.38 kernel carries the ATI Radeon HD 6000 open source support. (just fyi!)
If you encounter problems or found this post helpful, it would be nice to leave a comment below.
This way, I can adjust it to the needs of my readers.

Nasty little OpenSSH Bug

So I’ve been using my Targa NT9231 as a home sever (Running Ubuntu 10.10 server edition) for a while now.
It’s been serving several purposes such as internal webserver, irssi, monitoring and tunneling/proxy server.

As all wise people should do, I’ve been using OpenSSH to connect to it.
Solely  connected to it from my netbook, as my desktop Ubuntu computer died after the purchase of a new ATI (curse you) Graphics card.
But now, I managed to revive my desktop (yay!) and wanted to log in on my server.
Setted up the key and wanted to transfer it to my authorized hosts file… but that gave me a bloody error:

Permission denied (publickey).

So I started to digg around and checked filepermissions, ssh_config file etc… But all seemed ok.
But then I found this little nasty openSSH Bug on launchpad.

Simply running “ssh-add” on the client fixed the problem!

Ssh-add adds identities to the authentication agent, ssh–agent. When run without arguments, it adds the file %HOME%/.ssh/identity. Alternative file names can be given on the command line. If any file requires a passphrase, ssh-add asks for the passphrase from the user.

I’m not sure how this could’ve helped, but hey, its a workaround that actually works 🙂