[colug-432] Streaming

[philip farris]

Replies like the one from R. Troth (and everyone else) is why I LOVE
getting, reading, and LEARNING from these emails.


Kind Regards

FiL

On Mon, Jan 10, 2011 at 10:22 AM, Thomas W. cranston <
cranston.thomas at gmail.com> wrote:

> On 01/10/2011 08:45 AM, Richard Troth wrote:
> > I don't know the full history of /proc throughout all Unixdom.  My
> > first exposure to it was on Solaris (Sun).  Also saw it on IRIX (SGI).
> >   Linux has had it for a very long time, maybe prior to 1.0.  (I used
> > 0.99, but I don't remember if /proc was present.)
> >
> > The implication from its name is that it holds PROCess information.
> > So there is a sub-directory for each running process.  A normal Linux
> > system will always have process #1 (INIT), so you can eyeball the
> > contents of /proc/1 and see how things look.  (INIT is a simple case,
> > so /proc/1 won't necessarily have as much interesting stuff as other
> > pseudo directories under /proc.)
> >
> > (forgive me if you know this)   The<PID>  nomenclature was simply a
> > shortcut for "any process number".  So ... find out the process ID of
> > your running media player (eg: when you are at the library).  Say it
> > is 1234.  Then /proc/<PID>/fd would be /proc/1234/fd, which is a
> > pseudo directory of the file descriptors of that process.  ONE of
> > those file descriptors should reveal a temporary file where the
> > content is cached.
> >
> > Linux is pretty slick here.  Other POSIX systems and Unix-workalike
> > systems don't have as much magic exposed under /proc (and now also
> > /sys).
> >
> > I hope this helps.
> >
> > -- R;<><
> >
> >
> >
> >
> >
> > On Mon, Jan 10, 2011 at 09:29, Thomas W. cranston
> > <cranston.thomas at gmail.com>  wrote:
> >
> >> On 01/09/2011 04:56 PM, William Yang wrote:
> >>
> >>> On Sat, 2011-01-08 at 18:25 -0500, Matt Meinwald wrote:
> >>>
> >>>
> >>>> My guess is it is not on the hard drive at all.  I have seen flash
> store regular
> >>>> videos in /tmp.  In more recent versions they seem to be deleting this
> file
> >>>> immediately after creating it, but it is still accessible somewhere in
> >>>> /proc/<PID>/fd/.
> >>>>
> >>>>
> >>> That's a secure coding technique to prevent data leakage.
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>> I attempted to use the same strategy for a streamed video, but the
> only related
> >>>> file in there is a socket connection to port 1935, apparently the port
> for RTMP
> >>>> (http://en.wikipedia.org/wiki/Real_Time_Messaging_Protocol).  If you
> are really
> >>>> serious about downloading these streams, it seems you would need to
> find the url
> >>>> of the stream and a program that can handle RTMP (some can be found in
> the link
> >>>> I provided).
> >>>>
> >>>> On 01/08/2011 06:10 PM, jep200404 at columbus.rr.com wrote:
> >>>>
> >>>>
> >>>>> Hi,
> >>>>>
> >>>>> You wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>> I streamed ACL 1/1/11 (Cheap Trick) this week at the Library. It
> does
> >>>>>> not show up in tmp. Any idea where they hide it?
> >>>>>>
> >>>>>>
> >>>>> Nope. I do not even know if it is on your hard drive.
> >>>>>
> >>>>>
> >>>>>
> >>>>>> Does streaming work different than downloading a You Tube video?
> >>>>>>
> >>>>>>
> >>>>> I do not know.
> >>>>>
> >>>>>
> >>>>>
> >>>>>> Where does Austin City Limits hide their stream in my computer?
> >>>>>>
> >>>>>>
> >>>>> Flash considers users to be the scum of the earth.
> >>>>> I expect that PBS (not Austin City Limits) has decided
> >>>>> to make saving the stream difficult. Search for flash in
> >>>>> add-ons for Mozilla/IceWeasel. Try the different downloaders.
> >>>>>
> >>>>> Here's something to try.
> >>>>>
> >>>>> Before going to the web site for the video, execute:
> >>>>>
> >>>>>      man find
> >>>>>      find />before.files
> >>>>>
> >>>>> As you are watching the video, execute:
> >>>>>
> >>>>>      find />while.files
> >>>>>
> >>>>> The compare them:
> >>>>>
> >>>>>      man diff
> >>>>>      diff before.files while.files | less
> >>>>>
> >>>>> Jim
> >>>>>
> >>>>> _______________________________________________
> >>>>> colug-432 mailing list
> >>>>> colug-432 at colug.net
> >>>>> http://lists.colug.net/mailman/listinfo/colug-432
> >>>>>
> >>>>>
> >>>> _______________________________________________
> >>>> colug-432 mailing list
> >>>> colug-432 at colug.net
> >>>> http://lists.colug.net/mailman/listinfo/colug-432
> >>>>
> >>>>
> >>>
> >> What is /<PID>  , or what does it mean? Process ID? Does that mean I
> >> should look in /proc/1 thru /proc/tty?
> >>
> >> tom at 1520:~$ cd /proc/<PID>/fd/
> >> bash: PID: No such file or directory
> >> tom at 1520:~$ cd /proc/<PID>/
> >> bash: PID: No such file or directory
> >> _______________________________________________
> >> colug-432 mailing list
> >> colug-432 at colug.net
> >> http://lists.colug.net/mailman/listinfo/colug-432
> >>
> >>
> > _______________________________________________
> > colug-432 mailing list
> > colug-432 at colug.net
> > http://lists.colug.net/mailman/listinfo/colug-432
> >
> >
> That helps. Will try it and other suggestions next time I am at a fast
> connection.
>
> Tom
> _______________________________________________
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>
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