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Thu, Feb. 17th, 2005, 09:07 am
Talk at Stanford

Yesterday I gave a talk at Stanford as part of an ongoing series, focusing on what the interesting problems in studying BitTorrent are. You can watch the talk online. If you have any intentions of doing academic work on BitTorrent, you should watch it.

Thu, Feb. 17th, 2005 08:49 pm (UTC)
(Anonymous): Thank you!

Thanks for making the link available! I'll be putting this on Prodigem or Torrentocracy ASAP.



Thu, Feb. 17th, 2005 11:21 pm (UTC)
(Anonymous): download?

can i download rather that stream this?

Thu, Feb. 17th, 2005 11:54 pm (UTC)

Hey Bram -- I'm the purple juggler guy. Just thought I'd stop in and mention that I enjoyed the talk. Of course, I went into it with only a vague idea of how BitTorrent works, so I really couldn't help but learn something...

Fri, Feb. 18th, 2005 12:08 am (UTC)

It would have made the most sense to put the video up as a BitTorrent download :).

Fri, Feb. 18th, 2005 03:55 am (UTC)

I had it up, but Gary reminded me that I wasn't sure of the distribution rights, so I took down. No biggie.

If you want to download it for personal use, you can throw "mplayer -dumpstream -dumpfile bram.asf " at the URL's in the file that eventually downloads above. You could then munge up some sort of mencoder thing to make it play on another machine of yours, but hell, if you already have mplayer, just play it.


PS... great talk... the lesson for me was, sometimes it's just gotta fuckin' work, and that's all there is to it.

Fri, Feb. 18th, 2005 03:59 pm (UTC)
(Anonymous): seeking in playback?

Is there any way to seek within the stream, or to download it? My transfer got interrupted and I can't fast forward through the 20 minutes I watched.

Sat, Feb. 19th, 2005 02:50 am (UTC)
(Anonymous): Re: seeking in playback?

Any chance to get this in some standard format? thanks.

Sat, Feb. 19th, 2005 11:03 am (UTC)
(Anonymous): Re: seeking in playback?


Tue, Feb. 22nd, 2005 05:45 am (UTC)
kragen: Re: seeking in playback?

Thank you!

Mon, Mar. 7th, 2005 09:48 pm (UTC)
(Anonymous): Re: seeking in playback?

You can download a stream with HiDownload:

This WMV stream(file) is 55.4MB (which suggests that the 7MB torrent is faulty).

Sun, Feb. 20th, 2005 03:23 am (UTC)
(Anonymous): News Story 19th Feb.

I read this - http://news.independent.co.uk/media/story.jsp?story=612523 ,and just happened to choke at the 6th paragraph - is this defamation? Can BC ask for an apology or just sue?

Tue, Feb. 22nd, 2005 05:46 am (UTC)
kragen: Re: News Story 19th Feb.

What's in the sixth paragraph? I can't see it.

Tue, Feb. 22nd, 2005 08:07 am (UTC)
d03boy: Re: News Story 19th Feb.

It said something to the effect that BitTorrent was created solely for sharing warez and movies I guess... which Bram clearly has stated that it wasnt

Mon, Mar. 7th, 2005 02:30 pm (UTC)
(Anonymous): Re: News Story 19th Feb.

I've found a copy of the article on this page:

It says:
"Another factor is the new file-sharing technology known as BitTorrent, specifically designed to download films and television programmes."

Thu, Mar. 24th, 2005 03:03 pm (UTC)
(Anonymous): Re: News Story 19th Feb.

If that's all it says, it's not really libellous - they could just mean it's aimed at people legitimately sharing large files, like how some games companies make demos avaialble thorugh BT.


Sun, Feb. 20th, 2005 10:01 am (UTC)
d03boy: Question..

You mentioned a program [in the video] that tried to spread out uploads across multiple file transfers. I was just wondering what program this was.

Sat, Feb. 26th, 2005 09:01 pm (UTC)
(Anonymous): Re: Question..

I'm also curious as to what this "certain client" is as well.

Nevertheless, it was pretty funny to see Bram cracking the whip.

Tue, Feb. 22nd, 2005 01:39 pm (UTC)
(Anonymous): Nice talk


- David Smith.

Tue, Feb. 22nd, 2005 03:23 pm (UTC)
marktaub: Why not write a book Bram?

Great talk Bram. Thanks for having it posted. I'd like to work with you to turn it into a book. As you indicate in your talk, the field of "reliability application" programming is new and largely unexplored. And there is also a great deal of interest in the architecture of internal functioning of BitTorrent. Do you have any interest?

Wed, Feb. 23rd, 2005 09:27 am (UTC)
lionkingwf: Could I get a full copy of your talk?

Are you convenient to upload it a web site or send an email to me? Because my connect here isn't very good. Thanks!

Sat, Feb. 26th, 2005 08:57 pm (UTC)
(Anonymous): Remaining Challenges

It's obvious to me from this talk that the main challenges remaining to the BT code are user interface/display challenges (see: repeated references to the overwhelming amount of pointless complaining resulting from ui misunderstandings).

For exmaple, trying to solve the 'time remaining' confusion by refining the calculation algorithm is the wrong approach. What is needed is to refine the visual representation of the information provided by the 'time remaining' calculation in a way such that the user made aware of the situation at hand.

The main problem is that the current visual representations are based on traditional metaphors of file tranfer that simply don't apply to BT(e.g. what does the progress bar represent?).

Ultimately, by visually representing items in more accurately abstracted ways instead of awkwardly applying traditional metaphors, user-confusion an be minimized if not entirely eliminated.

Great talk, sir!
Matias Nino

Fri, Mar. 11th, 2005 03:40 pm (UTC)
(Anonymous): UI

I agree, the UI needs a lot of improving, such as adding search and a richer interface.

Mon, Mar. 7th, 2005 01:05 am (UTC)
(Anonymous): cant download talk

how about a torrent of it?

Mon, Mar. 7th, 2005 02:01 am (UTC)
(Anonymous): Re: cant download talk

Yeah seriously, a talk about BitTorrent and I have to watch it in some proprietary streaming format .(

Mon, Mar. 7th, 2005 02:44 am (UTC)
(Anonymous): Re: cant download talk

I've obtained permission from both Stanford and Bram, and I will be posting the .torrent soon... Look for it on Prodigem! http://www.prodigem.com/

Mon, Mar. 7th, 2005 04:54 am (UTC)
(Anonymous): Download stream via mplayer

You can download the stream with: mplayer -dumpstream -dumpfile stream.wmv mms://lang.stanford.edu/courses/ee380/050216-ee380-100.wmv Which will save it to disk.. Someone then setup a .torrent please ;)

Mon, Mar. 7th, 2005 05:04 am (UTC)
(Anonymous): 050216-ee380-100.wmv.torrent

I just put this torrent in http://netnews.nctu.edu.tw/~gslin/tmp/050216-ee380-100.wmv.torrent .

Mon, Mar. 7th, 2005 07:08 am (UTC)
(Anonymous): Bittorrent's Fundamental Flaw

I believe, at this point, it is time for a quote:

"[...] Which brings us, at last, to the moment of truth, wherein the fundamental flaw is ultimately expressed [...]"

Mon, Mar. 7th, 2005 07:54 am (UTC)

That was a cool video. Nicely in-depth.

Mon, Mar. 7th, 2005 09:03 am (UTC)
(Anonymous): another torrent

Here's the official .torrent with a permanent seed - http://www.prodigem.com/torrents/download/winningham/winningham-Bram_at_Stanford.torrent

Mon, Mar. 7th, 2005 10:51 am (UTC)
(Anonymous): Re: another torrent

8MB for an hour and 22 min of video... The video stops after 10min something.

Fri, Mar. 25th, 2005 09:14 pm (UTC)
(Anonymous): Re: another torrent

one more torrent well seeded.


Fri, Jan. 6th, 2006 04:12 pm (UTC)
omar_theodrien: another way to download this stream!!

all the above mentioned ways to download this stream failed for me. so i found another way and since all the torrents seem to have gone missing i thought of posting it.

i used vlc media player (if you don't have it google it!)
ok file -> open network stream select http/..../mms and paste the url:

then check the stream output checkbox choose settings and check the file as the output method "dont choose both the file and play locally as it usually misses things up" choose a place to save the file and give it an asf extension.

in the encaps method choose asf.
ok all that and clock ok and it will start saving it to file.