Playing TAU lectures from videos.tau.ac.il

[Boris shtrasman]

On Mon, Aug 2, 2010 at 5:56 PM, Elazar Leibovich <elazarl at gmail.com> wrote:

> I've took a look at wireshark in windows, there were two problems:
>
> 1) The referrer field is sent from WMP. I don't think it's being send from
> linux. I'm pretty sure that there's some settings in the streaming server
> that restricts streaming to people with the right referrer only.
>
>
Now we are talking..

On some cases I noticed this kind of behvior to protect MMS ussge of
embeded  object,

When you will mimic the browser (do all the steps it is annoying but worth
it) you might find that you get link in the form unique/onetime/token
parameter .
when you will write the perl/curl/what ever don't forget to test this.
some timed there is some sort of used link or ip + referrar test.


2) The protocol itself is not the standard MMS protocol. mplayer tries to
> use some kind of MMS handshake, while WMP is sending RTSP commands. I don't
> understand it, it seems to me that the MMS protocol is a propriety
> replacement to RTSP.
>
> It might be the last comment.
There is the third side plugging(e.g. Media Guard)  for authorization (hate
them), use perl mechanize to do the auth.

Are you sure that they are RTSP commands  ( look at the headers) ?



> If there's a video expert in the crowd, I can send him the pcap, I'll be
> glad for some help.
>
> the RTSP / MMS stream ? or the authorization ?

be aware that sending the pcap you might infringe TAU rights (who know ..)

However I believe that convincing mplayer to play the stream should not be
> that hard. All the information should be availible once you login, and I can
> write a script that given a video page at video.tau.ac.il gives the
> correct command line parameters to convince mplayer to send it.
>
> (BTW my friend will contact the helpdesk as soon as he'll finish some more
> urgent matters, I'll report here what did we achieve).
>
>
> On Mon, Aug 2, 2010 at 5:25 PM, Boris shtrasman <borissh1983 at gmail.com>wrote:
>
>>
>>
>> On Mon, Aug 2, 2010 at 5:02 PM, Elazar Leibovich <elazarl at gmail.com>wrote:
>>
>>> On Mon, Aug 2, 2010 at 3:58 PM, Boris shtrasman <borissh1983 at gmail.com>wrote:
>>>
>>>>
>>>>
>>>> 2010/7/21 Elazar Leibovich <elazarl at gmail.com>
>>>>
>>>>> Students of the Tel Aviv University have videos of some lectures
>>>>> availible online.
>>>>> I'm trying to play these lectures in linux with a friend's computer.
>>>>> The lectures are ment to be played by Windows Media Player plugin in
>>>>> the browser, which is given a mms:// streaming address. Feeding this address
>>>>> to mplayer resulted the server respond with "no such video stream".
>>>>>
>>>>> Was anyone able to play this lectures on some linux supporting
>>>>> software?
>>>>> I suspected it works in the browser because of the authentication (you
>>>>> must log in to view the lectures). But I don't understand, do the WMP plugin
>>>>> access your cookies when it runs in the browser? I assumed it doesn't (it
>>>>> works in chrome under windows, and I assumed the WMP plugin there won't know
>>>>> anything about chrome's internals) therefor I assumed authentication won't
>>>>> be an issue, but maybe I'm wrong about that.
>>>>>
>>>>> _______________________________________________
>>>>> Linux-il mailing list
>>>>> Linux-il at cs.huji.ac.il
>>>>> http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
>>>>>
>>>>>
>>>> Btw have you tried using *-mozilla-plugin and setting the
>>>> network.protocol-handler.app.mms in mozilla ?
>>>> you can manually override the settings for the player.
>>>>
>>>
>>> I used the default Totem plugin that comes with Ubuntu, but I'll give it
>>> a go.
>>>
>>
>> How did you get the stream ? I would recommend opening Wireshark on
>> windows machine and making sure that the link you get is the correct one.
>> Also take a look on the steps I used to make my mozilla work with a
>> streaming web site ( http://myrtfm.blogspot.com/2010/05/re.html (scroll
>> to the end) )
>>
>> Most of the thread is about Legal stuff and not the normal tech stuff,
>> have you tried manually mimicking the browser behavior ?
>>
>> --
>> --
>>  -- Boris Shtrasman ------------
>> |Gnu/Linux Software developer   |
>> | IM       : borissh at jabber.org   |
>> | URL      : myrtfm.blogspot.com|
>>  _______________________________
>>
>>
>
>


-- 
-- 
 -- Boris Shtrasman ------------
|Gnu/Linux Software developer   |
| IM       : borissh at jabber.org   |
| URL      : myrtfm.blogspot.com|
 _______________________________
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