Re: iChat and YouTube on a G4 Cube

2011-01-05 Thread Dan

At 1:36 PM -0800 1/3/2011, John Carmonne wrote:

On Jan 3, 2011, at 6:28 AM, Dan wrote:

At 1:48 PM -0800 1/2/2011, John Carmonne wrote:

3 GB's per second Time Warner RoadRunner turbo Talladega Fast


Run some traceroutes to the destination, to make sure there isn't a 
problem between you.


This is not happening when using the G4 MDD, G5 Dual 2.7 or MacBook 
Pro on the same network.


Which still does not preclude a network issue ON THAT MAC.  So again, 
run some traceroutes.



Ok.  Run Activity Monitor and watch the paging and i/o rates.


I have no idea what this is. If I have to be on iChat to check this 
it's hard to get anyone to stay up long enough.:-)


Launch Activity Monitor.

View the System Memory pane.  Observe the page in/out numbers.  If 
they change a lot while you're doing video then you have a paging 
problem.


View the Disk Activity pane.  Observe the data written/sec.  If it's 
high while you're doing video then you're caching to disk like crazy.


At 10:49 AM -0800 1/4/2011, John Carmonne wrote:
I may not be correctly adding the fmt=5 to the url. can you 
explain how to do that. when I start the YouTube I add the code to 
the end of the url but I get no change on the Cube or my TiBooks.


Take the YouTube url, add fmt=5 and refresh the browser page.

eg:
http://www.youtube.com/watch?v=bMltvlqEM54

vs

http://www.youtube.com/watch?v=bMltvlqEM54fmt=5

Again - try Yahoo! Messenger's video.  I suggest this because if it 
works ok then the problem is not your basic network connectivity 
etc.


I don't know how to use Yahoo that's why I have iChat and Skype It's 
for the layamn.


Have you bothered to try?   There are Help Files available.  It's quite simple.

- Dan.
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Re: iChat and YouTube on a G4 Cube

2011-01-04 Thread Nestamicky

On 03/01/11 10:16 AM, Bruce Johnson wrote:

Yes it DOES have to do with the video card. 10.4 offloads a bunch of processing 
to the video GPU if possible (and it's not just Core Video stuff).
Was this an error on Apple's side. Was it fixed in 10.5. Why would they 
do this? Could this explain similar problems I have on my Sawtooth with 
10.4 and a good video card. Lots of questions, some of which are just 
thoughts.


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Re: iChat and YouTube on a G4 Cube

2011-01-04 Thread Nestamicky

On 03/01/11 10:52 AM, John Carmonne wrote:


Streaming video is MUCH more CPU intensive than DVD playback. (This was
covered in exhaustive detail on this list a month or so back), so
anything that can be moved to the much-faster GPU really makes a difference.

John,

What Bruce is really saying here is this: no one in this group, or 
perhaps, anywhere can find a way to sort out the problem with online 
videos on G4s such as yours and the Sawtooth. He has said though 
something new; that this problem is partly a cause of how 10.4 was 
written. That's very new and adds valuable insight to this common problem.


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Re: iChat and YouTube on a G4 Cube

2011-01-04 Thread Bruce Johnson

On Jan 4, 2011, at 8:56 AM, Nestamicky wrote:

 On 03/01/11 10:16 AM, Bruce Johnson wrote:
 Yes it DOES have to do with the video card. 10.4 offloads a bunch of 
 processing to the video GPU if possible (and it's not just Core Video stuff).
 Was this an error on Apple's side.

?? No this was a conscious design decision in 10.4 on the part of Apple, part 
of the really bug 'under-the-hood' improvements in 10.4.

See John Siracusa's in depth review of 10.4:

http://arstechnica.com/apple/reviews/2005/04/macosx-10-4.ars/

the whole discussion of Quartz starting at page 13 is what I'm referring to.

 Was it fixed in 10.5.

No, it was significantly enhanced in 10.5. OSX offloads much more processing 
onto the video card, the Core Video, Core image technologies are much improved.

 Why would they do this?

Because Video card GPU's are VASTLY faster at these sorts of calculations than 
the CPU in the Mac. 

 Could this explain similar problems I have on my Sawtooth with 10.4 and a 
 good video card. Lots of questions, some of which are just thoughts.

Possibly. More likely, however, is that the streaming videos we get today are 
simply bigger...most are now HD using very processor-dependent codecs.

-- 
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs


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Re: iChat and YouTube on a G4 Cube

2011-01-04 Thread imrazor


On Jan 3, 11:16 am, Bruce Johnson john...@pharmacy.arizona.edu
wrote:
 Yes it DOES have to do with the video card. 10.4 offloads a bunch of 
 processing to the video GPU if possible (and it's not just Core Video stuff).

 Streaming video is MUCH more CPU intensive than DVD playback. (This was 
 covered in exhaustive detail on this list a month or so back), so anything 
 that can be moved to the much-faster GPU really makes a difference.

 Also a Geforce 6200 is a much newer card than a GeForce3, iirc.

Interesting. I thought the reason that VLC handles video playback on
older Macs (this is true, right?) was that it offloaded a lot of video
processing to the video card, whereas iTunes/Quicktime did not. Have I
been misinformed?

Eric

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Re: iChat and YouTube on a G4 Cube

2011-01-04 Thread imrazor
On Jan 2, 1:24 pm, John Carmonne carmo...@aol.com wrote:
 I seem to have run into a bottle neck on my Cube 1.2GHz  1.5 GB RAM in that I 
 can't get aYouTubeto play smooth and iChat is out of sync on the sound along 
 with very jumpy video. My G4 MDD 1.25 is 100 % better than the Cube.  Can 
 this be a Bus speed issue the Cube is 100 and the MDD is 167.

 John Carmonne
 Yorba Linda USA
 Sent from my MBP

As an additional note, if you right click on a Flash video (or
animation), Settings... is one of the options. If you click on
Settings, then go to the Display tab (looks like a flat screen
monitor) there is an Enable Hardware Acceleration checkbox. In my
case, it was off by default. Turning this on didn't seem to help
playback on my G5, but I was wondering if it helped anyone else.

Eric

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Re: iChat and YouTube on a G4 Cube

2011-01-04 Thread Dan

At 8:52 AM -0800 1/4/2011, imrazor wrote:
Interesting. I thought the reason that VLC handles video playback on 
older Macs (this is true, right?) was that it offloaded a lot of 
video processing to the video card, whereas iTunes/Quicktime did 
not. Have I been misinformed?


VLC does NOT use the GPU for video decoding on the Mac.  Since OS X 
10.6.3 includes a new API for accessing the GPUs, support in VLC may 
be added in the future.


In general, VLC is so successful at what it does because it is 
extremely well written.  Imagine how powerful QuickTime could be if 
it was as well done!   ...Case in point, since you mentioned 
iTunes... It is pitiful that an app such as Audion can play streamed 
radio using less than 5% of a 200 MHz CPU but iTunes on the same 
computer uses over 20%!



I think there are some misconceptions as to what does what...

Video data is encoded / compressed in some way.  The player must 
read that data, decompress it, decode it (turn it into usable 
frames), render the frames into video data, then display it on your 
screen - umpteen times per second.  ...It is only those decompress 
and decode functions that are included in the codec module.


The question is which of those steps is performed where?

Normally, everything from render on is done on the video card, in its GPU.

The codec - the software module that does the decompression and 
decoding - can also benefit from doing things in the GPU.  But to do 
so, it needs to know how that particular GPU works, and what special 
features it has available (eg: MPEG-2 and more recently MPEG-4 H.264 
decoding).  Apple tries to make this easy(ier) to do by providing 
things like the OpenGL and QuickTime frameworks and providing APIs 
into Quartz.  Still up to the codec's author to take advantage of 
them tho.


But wait -- let's make it more complicated! LOL  What if the video 
player supports filtering and such, as VLC does?  Well, then you give 
the GPU the data to crunch, *then take it back*, apply those filters 
and such using the main CPU, then pass the data off to the GPU 
*again* for rendering and display.  ew.


A good example of a codec author failure is, of course, Adobe's 
Flash.  Instead of cleaning up their own code and taking advantage of 
the great tools that Apple provides, they spent millions on a 
b*tchfest about Apple refusing to give them direct access to the 
hardware.


Another example is the development of the name brand DivX codec. 
Why is it so abysmally slow and unstable, while Perian runs circles 
around it  LOL



At 10:16 AM -0700 1/3/2011, Bruce Johnson wrote:

Streaming video is MUCH more CPU intensive than DVD playback.


To elaborate a bit...  DVD-Video is low-compression MPEG-2.  Easy to 
play, even on a very slow machine.  Streamed video is highly 
compressed Flash or MPEG-4 H.264.  Very CPU intensive to decompress 
and decode -- and that's before the GPU involvement (if any).



Now, to get back to the OP's problem... There is something going on 
BEYOND bus and processor speed and all that total guesswork 
hand-waving.  On my 300 MHz Smurf, I can view YouTube video 
*smoothly* with fmt=5 added to the urls.  If my *G3* Smurf can do 
that, then his *G4* Cube can certainly do it.  But he says not.  So 
there is something else happening.  (waiting for specific answers to 
the questioned I posted on 1/3).


- Dan.
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Re: iChat and YouTube on a G4 Cube

2011-01-04 Thread John Carmonne


On Jan 3, 2011, at 6:28 AM, Dan wrote:


At 1:48 PM -0800 1/2/2011, John Carmonne wrote:

3 GB's per second Time Warner RoadRunner turbo Talladega Fast


Run some traceroutes to the destination, to make sure there isn't a  
problem between you.


This is not happening when using the G4 MDD, G5 Dual 2.7 or MacBook  
Pro on the same network.




Ok.  Run Activity Monitor and watch the paging and i/o rates.

I have no idea what this is. If I have to be on iChat to check this  
it's hard to get anyone to stay up long enough.:-)



 Do YouTube vids clean up if you add fmt=5 to the end of the url?




No the same deal.


DVD's play perfect. The iChat and Skype is all I'm bothered with.


DVDs playing fine means that your CPU, GPU, memory bus speed, and  
disk i/o speed are fine.


Can you play streamed videos from sites such as hulu?


No HuLu is a disaster

Again - try Yahoo! Messenger's video.  I suggest this because if it  
works ok then the problem is not your basic network connectivity etc.




I don't know how to use Yahoo that's why I have iChat and Skype It's  
for the layamn.

- Dan.
--
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group at http://groups.google.com/group/g3-5-list




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Re: iChat and YouTube on a G4 Cube

2011-01-04 Thread John Carmonne


On Jan 4, 2011, at 10:18 AM, Dan wrote:


To elaborate a bit...  DVD-Video is low-compression MPEG-2.  Easy  
to play, even on a very slow machine.  Streamed video is highly  
compressed Flash or MPEG-4 H.264.  Very CPU intensive to decompress  
and decode -- and that's before the GPU involvement (if any).



Now, to get back to the OP's problem... There is something going on  
BEYOND bus and processor speed and all that total guesswork hand- 
waving.  On my 300 MHz Smurf, I can view YouTube video *smoothly*  
with fmt=5 added to the urls.  If my *G3* Smurf can do that, then  
his *G4* Cube can certainly do it.  But he says not.  So there is  
something else happening.  (waiting for specific answers to the  
questioned I posted on 1/3).


- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.




I may not be correctly adding the fmt=5 to the url. can you  
explain how to do that. when I start the YouTube I add the code to  
the end of the url but I get no change on the Cube or my TiBooks.


JOHN CARMONNE
Yorba Linda USA
From TiBook 867




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Re: iChat and YouTube on a G4 Cube

2011-01-03 Thread Dan

At 1:48 PM -0800 1/2/2011, John Carmonne wrote:

3 GB's per second Time Warner RoadRunner turbo Talladega Fast


Run some traceroutes to the destination, to make sure there isn't a 
problem between you.


Why do you think some bus speed is involved? Playing video is very 
CPU intensive, not memory or i/o intensive.


My MDD 1.25 and Cube have the exact same CCC'd system so I thought 
because the Cube Bus is 100 and the MDD is 167 this is the only 
difference in the machines the Cubes video card is GeForce 3.
Also one of My TiBooks 867 is 133 bus and iChat is better than the 
Cube but not as good as the G4 MDD or the G5 PowerMac so the faster 
processors only seem to do well on the faster Bus for the streaming 
AV?


Ok.  Run Activity Monitor and watch the paging and i/o rates.


  Do YouTube vids clean up if you add fmt=5 to the end of the url?


?


  Try Yahoo! Messenger's video.  Is it smooth?


 Are you having playing other videos?


DVD's play perfect. The iChat and Skype is all I'm bothered with.


DVDs playing fine means that your CPU, GPU, memory bus speed, and 
disk i/o speed are fine.


Can you play streamed videos from sites such as hulu?

Again - try Yahoo! Messenger's video.  I suggest this because if it 
works ok then the problem is not your basic network connectivity etc.


- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.

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Re: iChat and YouTube on a G4 Cube

2011-01-03 Thread dc
On Jan 2, 2:24 pm, John Carmonne carmo...@aol.com wrote:
 I seem to have run into a bottle neck on my Cube 1.2GHz  1.5 GB RAM in that I 
 can't get a YouTube to play smooth and iChat is out of sync on the sound 
 along with very jumpy video.

It sounds like the Cube is nicely upgraded, the weak link may be the
video card. My Cube has a GeForce 6200, a popular upgrade for the
Cube, and it plays video pretty well (considering its age!).

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Re: iChat and YouTube on a G4 Cube

2011-01-03 Thread John Carmonne


On Jan 3, 2011, at 8:39 AM, dc wrote:


On Jan 2, 2:24 pm, John Carmonne carmo...@aol.com wrote:
I seem to have run into a bottle neck on my Cube 1.2GHz  1.5 GB  
RAM in that I can't get a YouTube to play smooth and iChat is out  
of sync on the sound along with very jumpy video.


It sounds like the Cube is nicely upgraded, the weak link may be the
video card. My Cube has a GeForce 6200, a popular upgrade for the
Cube, and it plays video pretty well (considering its age!).

I have a GeForce 3 card that replaced a Radeon 7500 so I think that  
would discount the video card plus the display is only a Apple Studio  
17 ADC.
Playing video is not a problem its the streaming stuff like YouTube,  
iChat and Skype. Compared to my G4 1.25 MDD and G5 2.7 PowerMac the  
Cube isn't  in the hunt  even though it's got a 1.2 GHz processor. I  
still need to check some more things that Dan suggested I'm not alone  
with this problem It's hard to find folks that use a Cube or any slow  
Bus machine for iChat or Skype, hence the confusion as to the video  
performance.


JOHN CARMONNE
Yorba Linda USA
From TiBook 867




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Re: iChat and YouTube on a G4 Cube

2011-01-03 Thread Bruce Johnson

On Jan 3, 2011, at 9:56 AM, John Carmonne wrote:

 Playing video is not a problem its the streaming stuff like YouTube, iChat 
 and Skype. Compared to my G4 1.25 MDD and G5 2.7 PowerMac the Cube isn't  in 
 the hunt  even though it's got a 1.2 GHz processor.

Yes it DOES have to do with the video card. 10.4 offloads a bunch of processing 
to the video GPU if possible (and it's not just Core Video stuff).

Streaming video is MUCH more CPU intensive than DVD playback. (This was covered 
in exhaustive detail on this list a month or so back), so anything that can be 
moved to the much-faster GPU really makes a difference.

Also a Geforce 6200 is a much newer card than a GeForce3, iirc.

-- 
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs


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Re: iChat and YouTube on a G4 Cube

2011-01-03 Thread John Carmonne


On Jan 3, 2011, at 9:16 AM, Bruce Johnson wrote:



On Jan 3, 2011, at 9:56 AM, John Carmonne wrote:

Playing video is not a problem its the streaming stuff like  
YouTube, iChat and Skype. Compared to my G4 1.25 MDD and G5 2.7  
PowerMac the Cube isn't  in the hunt  even though it's got a 1.2  
GHz processor.


Yes it DOES have to do with the video card. 10.4 offloads a bunch  
of processing to the video GPU if possible (and it's not just Core  
Video stuff).


Streaming video is MUCH more CPU intensive than DVD playback. (This  
was covered in exhaustive detail on this list a month or so back),  
so anything that can be moved to the much-faster GPU really makes a  
difference.


Also a Geforce 6200 is a much newer card than a GeForce3, iirc.

--
My MDD has a Radeon Pro 9000 4x 64 MB card where as the Cube has a 2X  
slot with a 64 MB GeForce card, So using the smooth operation of the  
MDD 1.25 as a standard I assume the video card in the cube is  
adequate. Also one of my Cubies has a  Nvidia 6800 256MB 256-Bit w/ 
Fan in his 1.7 Cube and no joy on ichat or Skype, This is where we  
seem to think the Bus speed is the bottle neck.


So far I've heard from no one who claims to have a smooth, in sync,  
iChat  or Skype experience on a Cube in any configuration.

i

JOHN CARMONNE
Yorba Linda USA
From TiBook 867




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iChat and YouTube on a G4 Cube

2011-01-02 Thread John Carmonne
I seem to have run into a bottle neck on my Cube 1.2GHz  1.5 GB RAM in that I 
can't get a YouTube to play smooth and iChat is out of sync on the sound along 
with very jumpy video. My G4 MDD 1.25 is 100 % better than the Cube.  Can this 
be a Bus speed issue the Cube is 100 and the MDD is 167.


John Carmonne
Yorba Linda USA
Sent from my MBP




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Re: iChat and YouTube on a G4 Cube

2011-01-02 Thread Dan

At 11:24 AM -0800 1/2/2011, John Carmonne wrote:
I seem to have run into a bottle neck on my Cube 1.2GHz  1.5 GB RAM 
in that I can't get a YouTube to play smooth and iChat is out of 
sync on the sound along with very jumpy video. My G4 MDD 1.25 is 100 
% better than the Cube.  Can this be a Bus speed issue the Cube is 
100 and the MDD is 167.


OS?  Flash vers?  iChat vers?   Details count!

What else is running?

Have you tried clearing caches and such?

What speed is your network connection?  Is it running at said speed or ?

Why do you think some bus speed is involved? Playing video is very 
CPU intensive, not memory or i/o intensive.


Do YouTube vids clean up if you add fmt=5 to the end of the url?

Try Yahoo! Messenger's video.  Is it smooth?

Are you having playing other videos?

- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.

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Re: iChat and YouTube on a G4 Cube

2011-01-02 Thread John Carmonne

On Jan 2, 2011, at 1:10 PM, Dan wrote:

 At 11:24 AM -0800 1/2/2011, John Carmonne wrote:
 I seem to have run into a bottle neck on my Cube 1.2GHz  1.5 GB RAM in that 
 I can't get a YouTube to play smooth and iChat is out of sync on the sound 
 along with very jumpy video. My G4 MDD 1.25 is 100 % better than the Cube.  
 Can this be a Bus speed issue the Cube is 100 and the MDD is 167.
 
 OS?  Flash vers?  iChat vers?   Details count!
 
OS 10.5.8,  iChat 4.0.8,  
 What else is running?
 
Nothing not even Mail
 Have you tried clearing caches and such?
 
To the max

 What speed is your network connection?  Is it running at said speed or ?
 
3 GB's per second Time Warner RoadRunner turbo Talladega Fast

 Why do you think some bus speed is involved? Playing video is very CPU 
 intensive, not memory or i/o intensive.

My MDD 1.25 and Cube have the exact same CCC'd system so I thought because the 
Cube Bus is 100 and the MDD is 167 this is the only difference in the machines 
the Cubes video card is GeForce 3. 
Also one of My TiBooks 867 is 133 bus and iChat is better than the Cube but not 
as good as the G4 MDD or the G5 PowerMac so the faster processors only seem to 
do well on the faster Bus for the streaming AV?

 Do YouTube vids clean up if you add fmt=5 to the end of the url?
 
 Try Yahoo! Messenger's video.  Is it smooth?
 
 Are you having playing other videos?
 

DVD's play perfect. The iChat and Skype is all I'm bothered with.

John Carmonne
Yorba Linda USA
Sent from my MBP




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