Previous 1 2 3 Next 40 Replies Latest reply: Nov 26, 2007 7:58 AM by jbwest2
Ken Ronkowitz Level 1 (0 points)
I have uploaded several large video files into iTunes U lately and the time required has been extremely long on all efforts at different times of the day.

Using my university connection (100 Mbps though I'm sure I wasn't getting that upload speed)it took just now 25 minutes
to upload a 393Mb MPEG-4 file.

Has anyone else uploaded large files and experienced slow speeds?

I'm not sure if I'm getting throttled down by the college, Apple or both.
  • Ken Newquist Level 1 (45 points)
    Unfortunately we haven't uploaded anything nearly that big yet, so I can't comment on large file upload speeds. Most of ours have been in the 20-30 mb range.

    That said, we're going to start working with faculty soon, and I expect we'll see quite a few large files then, so I'll be able to comment more in a week or two.

  • Duncan Bernhardt Level 3 (870 points)
    Hi Ken,

    The connection between Apple and your campus is the limiting factor in upload times. You are connected to your campus' network via a 100 Mbps link, but your campus' connection to Apple is much slower.

    25 minutes to upload a file of this size seems like a reasonable amount of time based on our testing. Its important to remember that upload time is often quite slower than download time for files of the same size.
  • Ken Ronkowitz Level 1 (0 points)
    Tried to upload another large file yesterday and it timed out & failed - is there a set time or file size that iTunes U will max out at?
  • Duncan Bernhardt Level 3 (870 points)
    There is a 500 megabyte file size limit on uploads.

    How big was your file? How long did the upload proceed before timing out?
  • Ken Ronkowitz Level 1 (0 points)
    helpful to know there's a max

    it was a 508mb m4v - it was still loading at 25 minutes & I was away from the computer when it timed out, so it was the file size. That is one from our speaker series & it runs 1:23:44 - not an extraordinary time length for that. I plan to convert to mp3 for those too, but some has visual elements as well (slides etc.)

    ** somewhat related question: how long before you are timed out for inactivity while in the admin mode on iTunes U? This happens to me frequently.
  • richwolf Level 3 (725 points)

    Hmmm ... interesting question. I'm sure Apple has some kind of official answer ... but I've never noticed a timeout while logged into iTunes U using my "Administrator" credential. I "think" the lognest I've ever been logged into iTunes U (inactively) as an admin was something like an hour ... but usually I'm just in to setup a new course for someone at our site.

    MacBook Pro   Mac OS X (10.4.8)   I lied. I'm running Leopard
  • jmeredith Level 1 (0 points)
    I have tried several times unsuccessfully to upload a 271MB .mp4. After about 20-30 minutes it times out. I don't think I'ver ever gotten more than 50% of the file uploaded before the connection times out.

    Is there some way this can be adjusted on our site?

    Randy meredith
    Dir. Academic Technology
    Spring Arbor University
  • richwolf Level 3 (725 points)
    Our biggest file is 263.9 MB. It uploaded without a hitch. I know this is not very helpful to you guys ... sorry ... but I put it out as a data point.
  • Duncan Bernhardt Level 3 (870 points)
    For people having trouble uploading can you post the following information if you have it:


    Connection type/speed (This is most applicable to home users as campus users will likely not know how the campus network is connected to the internet.)

    Results of the speed test at
  • jmeredith Level 1 (0 points)
    I continue to have problems uploading a 272Mb mp4 from Campus. We have multiple T1s, our sysadmin has tweaked bandwidth for me so I can upload a bit faster. The problem is, my upload NEVER succeeds - it times out every time. It seems to time out around the 30 minute mark.

    To compound the problem, the video I'm trying to upload is a presentation by our president.

    Any idea how I can avoid losing my hair (or worse)?
  • Duncan Bernhardt Level 3 (870 points)
    You can't upload a file greater than 500 megs to iTunes U, but there is not limit on the amount of time an upload can take.

    Are you able to upload smaller files okay?

    Can you upload other mp4 files okay?

    What is the exact error you get when this problem happens? Attaching a screen shot would be most helpful.
  • haggerty Level 1 (0 points)
    I work in the same office as Ken and I also noticed that it took quite a while to upload large files with a PC. As a test I tried using my other computer, which is a Mac, at the same time. The Mac always uploads files much quicker than the PC (the difference is amazing).

    Does Apple throttle back PC users and give more bandwidth to Mac users?
  • Duncan Bernhardt Level 3 (870 points)
    Apple does not limit the bandwidth of PC users in anyway shape or form.

    Are you using Internet Explorer or Firefox on the PC? I'll bet you are using Internet Explorer. There are known issues with IE and uploading files. IE 6 is known to be very slow in uploading large files, IE 7 is supposed to fix this problem.

    Try Firefox on the PC, if that helps then it is the known IE 6 issue.
  • jmeredith Level 1 (0 points)
    Even though I'm using our campus connection, I ran the speed tests just to provide an additional data point.

    I ran the test (San Francisco route) 3 times, the mean of the 3 results are provided below:

    3894 / 1658 kbps
    475.8 / 67.5 KB/sec

    It seems this ought to plenty fast enough not have my session time out.
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