[vlc] Re: Problem streaming HD (.ts) file {Scanned}

[Rett D. Walters]

Hi -

I believe that 1080i HD is about 24 Mbit/sec.  I have no
issue playing back HD streams across a switch 100Base-TX
network.  The main issue I have is the inability for the
workstation to decode it effectively.  Decoding 1080i
video at full rate takes 70-90% of a 2.8 Ghz P4 CPU with
an Nvidia GeForce 4 card, especially if any scaling is
being done at the same time.  It seems that even HW
scaling using XV is not quite adequate for streams of this
size.

I would say that your issue is caused by not being able to
decode the video fast enough - not by your network being
unable to send the data fast enough.

I am the network architect for a large multi-national
enterprise and I see switched ethernet sustain 70 Mbit/sec
on a regular basis in the networks I manage.  I have even
pulled an 1080i HD stream over 802.11A wireless without
issues (a good 802.11A AP/Card combo can sustain 32
Mbit/sec.)

Rett Walters
>
> HD is about twice DVD rate, isn't it?  (~18Mbps)  Even
> over 100Mb
> ethernet, you may be in trouble.  (Ethernet, even
> switched, isn't very
> efficient.)  You could try doing a test over gigabit and
> see if it
> improves.  If it does, it's surely your network bandwidth
> that's at issue.
>
> I had to move from 10Mb to 54Mb (wireless) to get lower
> res standard
> video to stream smoothly, and I was doing something like
> 5Mb streams.
>
> You could try FTP'ing the file from one box to the other
> as a sanity
> check to see if it's even possible to send it over your
> network in real
> time.  Of course, it doesn't account for the extra
> overhead involed in
> the streaming and decoding process.



-- 
This is the vlc mailing-list, see http://www.videolan.org/vlc/
To unsubscribe, please read http://www.videolan.org/support/lists.html
If you are in trouble, please contact <postmaster at videolan.org>