Re: Freezing, Pixilation and Stuttering When Watching Live and Recorde
- From: gary drummond <gdrumm0356@xxxxxxxxxxxxx>
- Date: Mon, 05 Feb 2007 11:30:23 -0600
The top posting threw me off! OE of course...
Depending on memory size, and if protected content is involved (or not-see below) I/O could still be going on because of the software overhead. aero could also be something that would cause a drain on memory and paging problems. Vista's DRM can and does mess a lot of things up over the network and in memory or I/O operations. Even when protected content is not being transported, the extra code is there, which can and does encrypt/decrypt data whenever it move around.
Here are a couple tech of snips:
"An indication of the level of complexity added to the software can be seen by looking at a block diagram of Vista's Media Interoperability Gateway (MIG). Of the eleven components that make up the MIG, only two (the audio and video decoders) are actually used to render content. The remaining nine are used to apply content-protection measures..."
"...In order to prevent active attacks, device drivers are required to poll the underlying hardware every 30ms for digital outputs and every 150 ms for analog ones to ensure that everything appears kosher. This means that even with nothing else happening in the system, a mass of assorted drivers has to wake up thirty times a second just to ensure that... nothing continues to happen (Leo Laporte in his Security Now podcast with Steve Gibson calls Vista “an operating system that is insanely paranoid”). In addition to this polling, further device-specific polling is also done, for example Vista polls video devices on each video frame displayed in order to check that all of the grenade pins (tilt bits) are still as they should be. We already have multiple reports from Vista reviewers of playback problems with video and audio content, with video frames dropped and audio stuttering even on high-end systems [Note I]. Time will tell whether this problem is due to immature drivers or has been caused by the overhead imposed by Vista's content protection mechanisms interfering with playback..."
The root article is:
http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.html
If you read the whole thing, including the embedded links, it will take about 3 hours! It sounds like a full blown DRM implementation is not available right now, but the software in VISTA is...
Scary! I'll stick with MCE 2005...
Gary
JW wrote:
You do not get a delay due to writing to the disk while watching LiveTV since the disk buffers you wrote are still in main memory disk cache when they are "retrieved" for viewing. The delay is deliberate to allow for the effect that another application could have if using the system CPU extensively while watching LiveTV.
If you are having trouble with the 360s do you also have trouble with TV on the MCE system itself with Live or Recorded TV. If not then the problem is caused by network congestion especially if both the MCE system and the 360 are on wireless connections since only one wireless device on the router can actually be sending or receiving at any instance of time.
"gary drummond" <gdrumm0356@xxxxxxxxxxxxx> wrote in message news:oIKdnbwh_v3f017Y4p2dnA@xxxxxxxxxxxxxxx
Rob wrote:Try turning off Aero when running or recording live tv.My video does the same when I'm recording two stations at the same time,
I am having the same problem and have tried about 5 different drivers , it seems there is a conflict somewhere , but when Aero is off it works flawlessly.
hope this helps
"Darren Gisby" wrote:
When Watching Live and Recorded TV I get freezing, pixilation and stuttering I have updated everything. I am currently running Intervideo WinDVD7 as my decoder with the Hauppauge WinTV update. I have tried Nvidia's decoder and nero 7's decoder all to no avail. Could the one big hard drive be the problem? Would using a NAS box be better? Is my Router the problem? I am using 2 Xbox 360's through a Linksys BEFSR41 to watch TV.
GA-8I955X Royal Mother Board (Rev 1.1)/ Intel Pentium Processor Extreme Edition 840, 3.2GHz/
OCZ 2GB PC2-5400 Gold Dual Channel DDR2 (2X1GB)/
Gigabyte Geforce 7900 GT 256MB/
Seagate 300GB Barracuda 7200.9 SATA II w/NCQ, 16MB Cache (4 Hard Drives in Raid 5)/
Plextor PX-716SA 16x16 Dual Layer DVD+/-RW, Serial ATA (2 of)/
Enermax Liberty Modular Power Supply, 500W/
Hauppauge WinTV PVR 500MCE for Windows XP Media Center Edition (2 of)/
Creative Labs Sound Blaster X-Fi Fatal1ty FPS Edition/
Windows Media Center 2005 Edition/
2005FPW Dell 20" Flat Panel Wide Screen LCD/
Panasonic GAOO 36"/
Phillips 32"/
Xbox 360 (2 of)/
Linksys BEFSR41 Router
while watching another recorded show through another system. Killing one
of the recordings clears it up somewhat. It doesn't happen if I watching
a recording on my second drive. This would be similar to the overhead as
you would get with a raid 5 if you were recording and watching at the
same time to the same disk drive (or a program accessing it too). Are
you running a mix?
Video could stutter when the buffers are flushing to the drives while
you are also trying to read. Because of the delay in playing, I believe
the software writes and reads back the recorded video-I get a 1 second
delay from realtime display VS a TV directly on a cable...
Gary
.
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