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moshem Level 1 Level 1

I am trying to get my macbook pro i5 to play streaming netflix.

I used to do it on my win7 HP laptop for some time and it works nice.

on my mac, quality went down, when I tried to figure out why, I found out that the netflix stream is of lower quality.

I used ctrlalt+shifts when in the netflix playback window and see the actual bitrate and what is it buffering into..

on the PC it goes from 500->1500->2600->3800->2600->3800

on the mac it does 500->1000->500->1000->1500->500->1000

they are both connected wirelessly to the same setup:

mac - Airport N (transmit rate 117MB/s)
pc - internal wirelless G 45Mb/s

TP-LINK 1034ND Wireless N router (very strong one) - 3 antenas

Thomson cable modem on a 12Mb/s connection

and two ISP subscriptions were attempted, I also tried each computer connected directly to the cable modem.

still the PC provides me with superior streaming bandwidth. how come mac is having hard time ?

macbook pro i5, Mac OS X (10.6.6)
  • JohnAlanWoods Level 2 Level 2
    I don't live in the US or use Netflix but is it flash based?

    If so it's probably more to do with the performance of flash on the mac than your ISP.

  • moshem Level 1 Level 1
    No. is is not based on flash, it is SilverLight based.

    and the mac is much more powerful than the PC, so if the PC can handle it so can the mac.

    during playback, CPU is 30% utilized, so that is not that, it has something to do with network capping I don't really get.
  • a brody Level 9 Level 9
    Classic Mac OS
    It may need a newer version of Silverlight from

    It may have other network programs using the same bandwidth at the same time. Leave iTunes, Quicktime, iPhoto closed to see if it makes a difference.
  • moshem Level 1 Level 1
    I just did, uninstalled it and download the latest version from microsoft website.

    also cleared the caches for silverlight and for the browser (safari).
  • lowfokus Level 1 Level 1
    Run traceroute and see if you are using the same hops to get to the netflix servers on both computers.
    Also, do you have any special ports forwarded, and are they the same on both PCs?
  • moshem Level 1 Level 1

    I did a traceroute on both computers...

    the first 9 hops are identical, after that, the windows PC just report the next hops as Request timed out while the mac:

    10 ( 167.007 ms 166.900 ms 177.202 ms
    11 ( 174.870 ms ( 166.169 ms ( 166.046 ms
    12 ( 177.455 ms 170.238 ms ( 165.270 ms
    13 * * *
    14 * * *
    15 * * *
  • a brody Level 9 Level 9
    Classic Mac OS
    Usually what this means is the router is giving different lookup tables for each computer that is on it.
    Change routers if you want more consistancy, and make sure its firmware is known to work with your Mac OS X version.
  • a brody Level 9 Level 9
    Classic Mac OS
    And in event that does not work, your internet access provider is having trouble being consistent. To overcome that, use OpenDNS numbers in your setup on both router and Mac
  • lowfokus Level 1 Level 1
    I'm not sure if you can, but instead of using in the browser try using the actual ip address of the server. The posts above me will also probably help you, as it appears to be a DNS issue between you and Netfllix, somewhere along the network.

    If you say directly attaching to the cable modem yielded the same results, seemingly it's your ISP's DNS servers, or Netflix itself.

    Trying to go directly to the site without using any name resolution at all will tell us if we are on the right track.
  • lowfokus Level 1 Level 1
    Here is what I got for the direct address:
  • moshem Level 1 Level 1
    since the first hop is : (

    going directly to the IP address won't yield anything... it's just an AWS bucket..
  • moshem Level 1 Level 1
    I just changed my mac dns config to google public dns servers

    the result is identical
  • lowfokus Level 1 Level 1
    Not necessarily the case of the DNS providing different results, though, with 177ms times shown. TTL on his xp box probably isnt that high.
  • lowfokus Level 1 Level 1
    There a few things I can suggest then I'm stumped.

    Uninstall Silverlight with a third party uninstaller, such as AppZapper. This will remove all files associated with it, not just the app itself. It is free the first five times you use it.
    Reinstall it, reset Safari, and try again.

    Use Chrome instead. Still uninstall and reinstall Silverlight though.

    Call Netflix and provide them the information you have regarding the traceroute and DNS changes.
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