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Wednesday, April 9, 2008

The NCAA Finals: Joost About Perfect

Apr 9 2008 3:29PM | Permalink | Email this | Comments (3) |
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Was that a great game Monday night, or what? I was on retreat this past weekend so didn't get a chance to catch Saturday's NCAA Final Four matchups, as follow-up to my recently documented Joost experiences. But particularly given that several of my former co-workers at Intel were Kansas alumni, therefore rabid Jayhawks fans (as if there's any other kind...), and had slightly infected me with their disease, I wanted to make sure I watched the Finals.

My Joost Live Test experience this time around was much improved compared to last time, although I hadn't done anything different on my end; same Joost client revision, same laptop and location, same 802.11g tether to my router, etc. For some unknown reason, I was able to stretch the Joost playback window to dimensions of 1600x1200 pixels (i.e. to the maximum vertical resolution of my Hanns.G LCD). However, horizontally stretching it beyond that point would still blank out video playback, and full-screen mode would still freeze the GUI.

Now that I was viewing a much larger representation of the game image, I need to correct something I said last time:

I eventually figured out that if I switched from the 'high quality' to 'standard' stream, the crashes completely went away. Frankly, I didn't discern much of a quality difference between the two streams, anyway...

Actually, at high playback resolutions there's quite a noticeable difference, and as such I tolerated occasional Joost client crashes (and even more regular brief playback pauses) in exchange for more detailed images.

By my count, the Joost client crashed twice in the first half, once at halftime, twice in the second half/overtime combo, and once during the post-game festivities, much less often than in my previous Live TV 'high quality' experience. Fortunately, none of the forced relaunches happened during critical moments of the game, and in fact most of them luckily manifested during commercials ;-)

I got no 'temporary loss of signal' screens in the first half, and only a handful in the second half/overtime combo. As before, after a few-second delay the video stream would automatically resurrect. All in all, I'm quite impressed with this Joost experiment. Will it scale to more simultaneous content 'channels' from a technical standpoint, and what compelling content license deals will Joost be able to secure? Time will tell...


Reader Comments


at 4/10/2008 2:10:31 PM, Larry M said:
I wonder if there's a reason why most of the crashes occurred in commercials. Perhaps more frequent radical scene changes requiring more full screen transmissions (as opposed to delta transmissions).

at 4/10/2008 2:23:52 PM, Brian Dipert said:
Dear Larry M, I wondered the same thing, but in retrospect, 'most' probably wasn't the best word to use. It was more like '3 of 6'. And anyway, there's so much camera-to-camera cutting going on during the game, as well as frame-to-frame motion, that I'm not sure which (game or commercials) was on average the more challenging codec test.

at 4/11/2008 6:13:18 AM, Matt said:
The live stream is direct from CBS and Joost transcodes the game and commercials on the fly so It was probably luck that Joost crashed during the commercials .My older PC crashed over 10 times but its a single core processor that is under Spec for Joost but ot runs Joosts on demand content flawlessly .

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