Bram Cohen ([info]bramcohen) wrote,
2005-02-17 09:07:00
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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.

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  • 33 comments

Anonymous

February 17 2005, 20:49:46 UTC 7 years ago

Thank you!

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

Thanks,

Thomas
http://writtorrent.sf.net/

Anonymous

February 17 2005, 23:21:40 UTC 7 years ago

download?

can i download rather that stream this?

[info]neilfred

February 17 2005, 23:54:01 UTC 7 years ago

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...

[info]jonknee

February 18 2005, 00:08:40 UTC 7 years ago

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

Anonymous

February 18 2005, 03:55:58 UTC 7 years ago

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.

-Thomas

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

Anonymous

February 18 2005, 15:59:31 UTC 7 years ago

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.

Anonymous

February 19 2005, 02:50:43 UTC 7 years ago

Re: seeking in playback?

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

Anonymous

7 years ago

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[info]kragen

7 years ago

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Anonymous

7 years ago

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Anonymous

February 20 2005, 03:23:51 UTC 7 years ago

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?

[info]kragen

February 22 2005, 05:46:08 UTC 7 years ago

Re: News Story 19th Feb.

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

[info]d03boy

February 22 2005, 08:07:27 UTC 7 years ago

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

Anonymous

7 years ago

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Anonymous

7 years ago

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[info]d03boy

February 20 2005, 10:01:55 UTC 7 years ago

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.

Anonymous

February 26 2005, 21:01:05 UTC 7 years ago

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.

Anonymous

February 22 2005, 13:39:25 UTC 7 years ago

Nice talk

Cheers.


- David Smith.

[info]marktaub

February 22 2005, 15:23:51 UTC 7 years ago

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?

[info]lionkingwf

February 23 2005, 09:27:13 UTC 7 years ago

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!

Anonymous

February 26 2005, 20:57:32 UTC 7 years ago

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
mnino|@|imc.com

Anonymous

March 11 2005, 15:40:32 UTC 7 years ago

UI

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

Anonymous

March 7 2005, 01:05:02 UTC 7 years ago

cant download talk

how about a torrent of it?

Anonymous

March 7 2005, 02:01:48 UTC 7 years ago

Re: cant download talk

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

Anonymous

7 years ago

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Anonymous

March 7 2005, 04:54:00 UTC 7 years ago

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 ;)

Anonymous

March 7 2005, 05:04:57 UTC 7 years ago

050216-ee380-100.wmv.torrent

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

Anonymous

March 7 2005, 07:08:57 UTC 7 years ago

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 [...]"

Anonymous

March 7 2005, 07:54:39 UTC 7 years ago

That was a cool video. Nicely in-depth.

Anonymous

March 7 2005, 09:03:22 UTC 7 years ago

another torrent

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

Anonymous

7 years ago

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Anonymous

7 years ago

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[info]omar_theodrien

January 6 2006, 16:12:21 UTC 6 years ago

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:
http://lang.stanford.edu/courses/ee380/2004-2005/050216-ee380-100.wmv

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.
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