+ Post New Thread
Results 1 to 6 of 6
AV and Multimedia Related Thread, TV Tuners in Technical; Hi everyone, I'm need of a bit of advice regarding TV in the classroom. We've recently started outfitting our classrooms ...
  1. #1
    Duke5A's Avatar
    Join Date
    Jul 2010
    Posts
    807
    Thank Post
    83
    Thanked 132 Times in 115 Posts
    Blog Entries
    8
    Rep Power
    32

    TV Tuners

    Hi everyone, I'm need of a bit of advice regarding TV in the classroom. We've recently started outfitting our classrooms with short throw projectors, document cameras, and interactive boards of sorts in replacement of the aging TVs. The buildings all have video distribution equipment that takes a cable feed, reassigns channel numbers, adds a couple internal broadcast channels, and sends it back out analog to the classrooms over coax. The problems is we're still utilizing this setup and using separate TV tuners since the projectors don't have them built-in. These separate tuners are causing a host of problems on their own mainly because of the cheap build quality. From what I've been able to find nobody makes a quality analog tuner anymore. I'm sure there is other districts on here with the exact same problem I'm facing. What solutions and/or ideas have you guys come up with? Thanks!

  2. #2
    Norphy's Avatar
    Join Date
    Jan 2006
    Location
    Harpenden
    Posts
    2,384
    Thank Post
    54
    Thanked 315 Times in 245 Posts
    Blog Entries
    6
    Rep Power
    120
    Wouldn't it make more sense to broadcast the transmissions over the network? We have a OneLan system which takes input from four tuners and aggregates all of the channels into a webpage. You click on the channel you want to view and it shows a live feed.

    ONELAN IPTV Streaming // IPTV Omni-Servers. Single box, Network Delivery, Free-to-air, IPTV, Ethernet, Terrestial, DVB-T tuner cards, Analogue

    I don't know if they have a US office or if they sell the product in the US but there must be something similar!

  3. Thanks to Norphy from:

    Duke5A (23rd February 2012)

  4. #3
    Duke5A's Avatar
    Join Date
    Jul 2010
    Posts
    807
    Thank Post
    83
    Thanked 132 Times in 115 Posts
    Blog Entries
    8
    Rep Power
    32
    Quote Originally Posted by Norphy View Post
    Wouldn't it make more sense to broadcast the transmissions over the network? We have a OneLan system which takes input from four tuners and aggregates all of the channels into a webpage. You click on the channel you want to view and it shows a live feed.

    ONELAN IPTV Streaming // IPTV Omni-Servers. Single box, Network Delivery, Free-to-air, IPTV, Ethernet, Terrestial, DVB-T tuner cards, Analogue

    I don't know if they have a US office or if they sell the product in the US but there must be something similar!
    That is pretty slick. How is it as far as bandwidth usage? We have six sites in my district, each with their own video distribution racks. There is probably a dozen or so channels that they all have in common, along with four or five private internal broadcast channels. I'm wondering how hard this would be over a 1GB/s uplink between buildings.

  5. #4

    AngryTechnician's Avatar
    Join Date
    Oct 2008
    Posts
    3,730
    Thank Post
    698
    Thanked 1,212 Times in 761 Posts
    Rep Power
    395
    1Gbps should be plenty. With decent compression you should be looking at no more than about 5Mbps per channel, and if it's sent over the network using multicast you should never be using more than 5Mbps per channel regardless of the number of viewers.

    We have 58 TV and radio channels broadcast on our network (including 4x 1080p HD channels), and even if all of them were being viewed simultaneously on a single network segment, it would still only use about 90Mbps.

  6. Thanks to AngryTechnician from:

    Duke5A (29th February 2012)

  7. #5


    Join Date
    Jan 2006
    Posts
    8,202
    Thank Post
    442
    Thanked 1,032 Times in 812 Posts
    Rep Power
    339
    We use a single installation of MythTV fitted with Mythweb.
    Teachers request TV to be recorded by the librarian who sends them a link to the stream on the mythweb server.

    MythWeb - MythTV Official Wiki

  8. #6
    Duke5A's Avatar
    Join Date
    Jul 2010
    Posts
    807
    Thank Post
    83
    Thanked 132 Times in 115 Posts
    Blog Entries
    8
    Rep Power
    32
    Thanks for the information guys. This is going to make things easier when presenting a solution to my boss. I appreciate it!

SHARE:
+ Post New Thread

Similar Threads

  1. TV Tuner for Mac?
    By FN-GM in forum Mac
    Replies: 4
    Last Post: 19th January 2011, 05:35 PM
  2. Can XIBO display TV from built TV tuner?
    By Ben_Stanton in forum AV and Multimedia Related
    Replies: 7
    Last Post: 11th January 2010, 11:59 AM
  3. TV without tuner
    By jamesb in forum General Chat
    Replies: 53
    Last Post: 12th August 2009, 02:53 PM
  4. TV Tuner or Graphics Card with Composite video-in
    By flyinghaggis in forum Hardware
    Replies: 8
    Last Post: 22nd October 2008, 12:12 AM
  5. TV Tuner cards - which one?
    By Paid_Peanuts in forum Hardware
    Replies: 3
    Last Post: 27th February 2008, 06:52 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •