Improving Video Quality?

Video quality doesn't appear as good as it did when Steve demonstrated it some time ago when more than two are video chatting. I'm using a PowerMac G5 QUAD with iSight camera and invite the first person on my home network via Bonjour everything looks good, but when I invite the second person on my home network via Bonjour, both invitees pictures go blury. The other two machines are a Core 2 Duo iMac and a Core 2 Duo MacBook with built in cameras. All three machines are connected to the LAN at 1000 Base T speeds and all three are connected to the same Gigabit switch (which is a LinkSys Gigabit switch). All three have Quicktime Streaming configured for 1.5 Mbps/T1/LAN. iChat is configured to not limit the bandwith.
I would have expected a clear picture when my two guests are connected, but as soon as the second guest connects, the two guest pictures become blury. They also report the same thing. Is there anything else I can do to improve the picture quality? How did Steve obtain such good quality, does anyone know?
Thanks

Hi Dnar,
Do you know what actual throughput you are getting ?
There might (I stress might) be some improvement over a local network with the very top Quicktime setting but it does seem this is not stable enough for Internet connections
3:33 PM Saturday; April 21, 2007

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hello-
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Can you publish it in a different format - like .mov? What editor are you
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Gary Giurbino*
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How do improve video quality

help

No one here can help you without details. Unknown if any psychics are on board.
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Up front, I will admit to being a newbie when it comes to using Final Cut Studio 3 and would appreciate some feedback from the Apple forum experts.
I have spent a lot of time trying to determine how to achieve an optimum group of Compressor 3.5.2 settings so that the playback video quality of an AVCHD BluRay disc is equal to or better than one created by using the simpler auto settings of FCPro Share, version 7.0.2.
When using Compressor’s auto/default maximum settings, I experienced the same error message reported in:
Error MessageDuring Creation of Blu-ray Disc in FCP and Compressor 3.5
https://discussions.apple.com/message/12073794#12073794
I have since made some Compressor AVCHD Discs with smaller bit rate settings and compared video quality with a single FCP Share AVCHD disc. Both seem to be equal in providing a very good video when viewed on my new Panasonic DMP BDT 310 BluRay player. However, the Compressor AVCHD discs show some motion artifacts not present with the FCPro Share version, especially when scrolling text or when objects are moving through the field of view, and visible artifacts are seen from a stationary chain link fence and other lattice work in the background of the video sample.
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I have tried the following combinations of Bit rate settings along with varying Frame Encoder controls and burned an AVCHD disc for each example:
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Compressor set to 6 Mbps Average and 8Mbps Maximum, Frame Encoder settings OFF. Approximately 4 hours to encode although the time remaining estimator indicated a larger value of ~7 hours; not an accurate estimator at all.
Example B
Compressor set to 6 Mbps Average and 8Mbps Maximum, Frame Encoder settings ON, using “Better (Linear Filter) and Better (Motionadaptive)” settings. Approximately 4 hours to encode, not the 13 hours that were estimated.
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Example C
Compressor set to 13 Mbps Average and 15 Mbps Maximum, Frame Encoder settings ON, using “Better (Linear Filter) and Better (Motion adaptive)” settings. Multipass checked. DeInterlace was checked. Unknown hours to encode; about 8 hours done overnight..
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Example D
Compressor Auto settings,i.e., 15 Mbps Average and 17 Mbps Maximum, Frame Encoder settings ON, using “Better (Linear Filter) and Better (Motion adaptive)” settings. Multipass checked. Approximately 12 hours to encode, done overnight. Inserted disc next morning after the overnight encoding was completed, and a few minutes later an error message pane appeared that the maximum bit rate had been exceeded. This message was consistent with the Apple posted thread referenced above. Unfortunately the long overnight encoding was wasted.
It seemed to me that the best Compressor settings for suppressing the motion artifacts were displayed by the disc burned in Example C, i.e., 13/15 Ave/Max Mbps with“Better” Motion settings in the Frame Encoder.
However, when this disc was compared to the AVCHD Disc burned using the FCPro Share, the latter still seemed much better. I do not know what the auto bit rate values are as set in FC Pro, but for me, the quality is quite good AND the motion artifacts are significantly reduced, especially evident with the scrolling text.
Sorry about this long post, but I thought the detail would be necessary for the experts, and maybe helpful to others trying to get started in this BluRay arena. Did I misuse Compressor? I think the sample video exported as a self contained QT movie was the right thing to do? Not sure where I went wrong.
Thanks in advance for Feedback and Recommendations. For now, I’m going to stay with the simpler process using Final Cut Pro Share function.
BoBo

Thank You, Brad, for responding; glad to hear I'm not the only one having similar Compressor issues.
You may have hit on something. Perhaps Compressor's use of H.264 encoding was the reason for my motion artifacts? And perhaps Final Cut Pro Share retains the 1440x1080 quality as it burns the AVCHD BluRay disc?
I had Toast 10 for less than 30 days a couple of years ago, and was lucky to get a refund.
What version of Toast do you have? Wondering if new Toast 11 has improved previous bugs, especially upgrading its Chapter text, pictures, music. I would go back to Toast if it came close to mirroring DVD Studio Pro, or even iDVD capabilities.
Thanks,
BoBo

MacMini - LG 32" (32LB75) Problem - Poor video quality and now no picture.

Hi there, apologies for the length of this post....
I purchased a mac mini 1.8Ghz with 2Gb RAM yesterday with a wireless keyboard and mouse and hooked it up to my 32" LG 32LB75 using VGA. On startup the display looked ok, I managed to click through the various Leopard initialisations. I bought the machine for use as a front room media player for mainly DivX movies and the occasional bit of music.
Once I had installed the DivX codec I opened a DivX file in Quicktime and selected "full screen mode." As soon as the movie started I became quite disappointed. The picture quality was quite pixelated ("noisy") and certainly not as good as when I play the same movie file from my old dell PC on the same LG tv (the dell PC has a 64Mb PCI radeon 7000 which connects to the tv using the same VGA port as the mac).
Anyway just to give the mac a fair go I thought I would try out some genuine quicktime video samples from the itunes store (this time viewed from front row)....again not brilliant.
So I thought I would investigate the screen resolution to see if I could improve things. It appeared the resolution was set to 1900 by 1200ish I say "ish" because I can't remember exactly. I then attempted to reduce the resolution and eventually I settled on one that looked quite clear with the font size big enough to be easily read. Again I tried the movie and there wasn't much (if any improvement). Whilst changing resolutions the screen would go blank for a few seconds but on one particular setting (can't remember exact numbers) the display went blank and never came back. The tv now just displays "no signal".
I despaired and connected the mac to a 17" Iiyama montior that I use with a PC and it worked ok. However each time I tried to "hot swap" back to the television I would end up with no picture.
I'm really disappointed because everything else about the mac I really like. Particularly the remote for frontrow which is precisely what I wanted it for. The problem is I've spent over £500 and now seem to have a lesser quality picture than I had to begin with (ignoring for the moment that I don't have any picture!!)
Anyway my questions are these, answers to any or all most appreciated.
1) what is the easiest way to get my mini to start displaying on my tv again?
2) what would the optimum resolution be? My television mentions 1366 x 768 in the manual
3) If the mini doesn't offer this resolution in the pick list is it advisable to "force it" using some alternative software (ie 3dexpress.de)?
4) Is the video quality affected by the software player? ie would VLC give better picture with DivX over quicktime/itunes/front row?
5) How likely is it that the video resolution of my new mac mini isn't "as good" as my old dell machine with its PCI graphics card?
6) Finally if I don't get results as good as my existing PC setup, how accomodating are apple with refunds? I bought it from a UK high-street apple store. The back of the receipt mentions a "14 day not satisfied" return policy but then goes on to say something about being "unopened"...which seems a little confusing. Ie how do you know if you're satisfied until you've actually used it?

Hi there
the solution was to remove the various display config files in leopard and then restart the machine, this got my display back on the tv (albeit off centre). To fix the "off centre issue" I used the LG "auto correct" feature from the remote control "menu > screen" options.
The apple support site describes how to remove the affected leopard display files here http://support.apple.com/kb/TS2213?viewlocale=en_US As you will see their resolution consists of 2 main steps, the first one involves starting your machine in safe mode, if this doesn't work then you proceed to the second step where you remove the files using a terminal prompt.
I didn't bother with the first step mainly because I don't think I can start my mac in safe mode since my only keyboard is wireless (bluetooth). So I connected the mac mini to a 17" LCD monitor (which thankfully did display the video signal ok) and removed all the listed files using terminal. I then shut the mac down, swapped the VGA cable back to the LCD tv restarted the mac and it detected the tv and set a resolution that worked. I then very carefully reduced the resolution down to one that was recommended by my tv (1300ish.. x 768ish??).
At this point I was back to having an acceptable signal but still a little off centre. So I used the TV remote, pressed menu, went into screen options and chose "auto correct". Picture then filled the screen perfectly.
The problem seems to be, leopard lists a bunch of resolutions that it believes your tv/display can handle but it would appear that in fact some of these resolutions are not supported by your TV and if you choose one of these your signal disappears and you can't get it back.
I would still say that I'm not 100% convinced with the mac mini's onboard graphics (I have a 1.8GHz version). I'm going to download some HD content and see if that improves things, but certainly my existing DivX collection looked a little sharper and clearer and better coloured using my old dell PC with its radeon PCI card. But the difference in picture quality is outweighed by the convenience of its size and the font row interface. I might tinker with putting Windows Media Center on it one day, perhaps that might improve things.

Improving Video Quality?

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