Slow Scrolling HD Video Selections on ATV Hard Drive

I currently stream HD videos from my Mac because for some odd reason keeping content synced produces an annoying slow scrolling issue for video selection. The ATV stops for 10-15 seconds reading the properties of each file before going to the next selection. This is not an issue when streaming which is odd as you would expect better performance with local content. This doesn't occur when scrolling standard def content or with HD podcasts though they are only 3-5 minutes in length. This was tested on 2x ATVs one with firmware 1.1 and 2. I would prefer to keep the video on the ATV. Any ideas as to what is causing this?

Had the same problem. It has to do with the aTV generating a thumbnail each time for each of your videos (when steaming, your computer generates the thumbnail...no work for aTV). For some reason, some videos take longer to produce a thumbnail (perhaps one with higher bitrates). You can tell which ones they are by clicking on the list in iTunes and seeing how long it takes for the thumbnail to appear in the bottom corner.
The fix is easy: Select your own picture and store it on the artwork tab of the get info menu (this comes up if you right click the video in windows). You can copy the thumbnail the itunes creates, and paste in the artwork tab. With the artwork stored, the atv no longer has to generate it for that video.
I did this for all of my videos, and now no problems.
Hope that helps.

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