mp4 file format parsers

you can find MP4

tools at :



http://mp4ui.sourceforge.net

A tool for indexing (hinting) a MP4 files and that gives

a few info about the content (tracks, ...)



http://www.mpeg4ip.net

A open source project including :

mp4info : an utility to dump info from mp4 file

mp4f : a library for parsing mp4 files

[tcpdump] how to fix the bad checksum problem

If you capture packets using tcpdump directly from the server, your capture file may contain bad checksums. This is because your OS is currently configured to use the hardware checksum offloading feature of the NIC. When this feature is enabled, expecting the NIC to rewrite the checksums, OS doesn't bother to fill (nor to reset) in the checksum fields. The problem is that tcpdump is capturing the packets before the checksums are rewritten by the NIC.

Use the following command to turn off the checksum offloading before using tcpdump (on ubuntu).

sudo ethtool -K eth0 rx off tx off

If you already have a capture file not usable due to the wrong checksums, use the following command to repair the file.

sudo tcpreplay -i eth0 -F -w output.cap input.cap

or

sudo tcprewrite -i input.cap -o output.cap -C

Blogged with the Flock Browser

Having a good set of bookmarklets on your browser's toolbar is like having a web-savvy Leatherman handy—you can take them anywhere, use them in many situations, and they just simply work. A bookmarklet is a little different than a plain old bookmark—it's a snippet of JavaScript that can perform all sorts of magic on the web page you're currently viewing. You add bookmarklets to your bookmarks collection to get all sorts of things done as you surf the web. Let's take a look at some of the best bookmarklets available, which can help you search and email, download videos, and work out some of the web's kinks.

To start using a bookmarklet, make sure your browser's bookmarks toolbar is visible. Then, drag and drop the bookmarklet link (enclosed in square brackets below each item on this post) to your bookmarks toolbar. When you're on a page where you want to use the bookmarklet? Just click its name on your toolbar.

Top 10 Useful Bookmarklets

Blogged with the Flock Browser

Flock - the browser for people who like to be connected

http://www.flock.com/

Get ready to meet your new favorite browser!

Blogged with the Flock Browser

Main Page - FreeMind - free mind mapping software

Main Page - FreeMind - free mind mapping software

So you want to write a completely new metaphysics? Why don't you use FreeMind? You have a tool at hand that remarkably resembles the tray slips of Robert Pirsig, described in his sequel to Zen and the Art of Motorcycle Maintenance called Lila. Do you want to refactor your essays in a similar way you would refactor software? Or do you want to keep personal knowledge base, which is easy to manage? Why don't you try FreeMind? Do you want to prioritize, know where you are, where you've been and where you are heading, as Stephen Covey would advise you? Have you tried FreeMind to keep track of all the things that are needed for that?