It's possible to generate sequential thumbnails like Media Player Classic directly in mplayer:

mplayer -benchmark -nosound -quiet -zoom -vf scale=420:-3,tile=5:8 -vo jpeg:outdir=. -sstep 60 file.avi

BUT. How to place the upper bar with video information like filename, duration, resolution, aspect ratio, audio and etc?

I'd like to know what are the best open 3D game engines.

woboyle wrote:

When you "concatenate" a set of files into a tarball, you get all the substructure when you expand the tarball at a later time, including symbolic links.

I couldn't find the exact reasons for concatenate files into a tarball while compressing. Could it be speed, redundancy or just for the sake of sequential I/O devices? I'd like to know if the other programs like zip, rar and 7zip do the same process silently. And what would be the consequences for compressing with gz and bz2 without concatenating, if it's possible.

jabirali wrote:

the catch is that the [b]rar[/b] format isn't open.

jabirali wrote:

What exactly do you refer to when you mention [i]security[/i]? Do you want to password encrypt these archives, or are you looking for a format that is somewhat more resistant to corruption?

mfillpot wrote:

A simple comparison review of linux compression tools is at wj32.wordpress.com/2008/04/27/comparison...ms-on-linux-2625tar/ , you also have xz (tukaani.org/xz/) and 7zip which is not installed in most base installations.

Hi. I'd like to adopt a default compression algorithm to my files. It has to be the most linux friendly, have the highest compression rate and security. Instantly I thought in tar.gz and tar.bz2. But I don't know their main differences. Witch one should I chose?