Frequently Asked
Questions
Q. Does video conferencing work over Airport?
A. Yes, in two ways. You can video conference between two Macs linked by
Airport (use Rendezvous networking in iChat), or you can video
conference with another computer if your Mac is connected to the
Internet via Airport. In either case, the bandwidth of both 802.11b and 802.11g
(the wireless network standards that Apple calls Airport and Airport
Extreme) are more than
acceptable. The bottle neck will be DSL, Cable or modem long before
Airport.
Q. My house has Airport. Can I use iChat between two Macs, and make a
baby monitor?
A. Yes, certainly. It might be cheaper to get a dedicated video baby
monitor than leaving an expensive Mac in the baby's bedroom all the time
;-)Q. Are there any firewall issues?
A. Yes, if you have a firewall! If you have a NAT or firewall system set up
to guard your network, you'll need to look into opening the necessary ports,
or moving your Mac to a "DMZ" zone.
Some NAT/firewall hardware is smart enough to do that automagically: if you
have a router which supports universal plug and play, you'll have a lot more
success. See
this Apple
Support doc and this help
page. If you are having issues, alternate who is calling who - it can
sometimes make a difference.
Q. I have an old-fashioned dial-up modem rather than broadband. What
can I expect?
A. You can have a working system, but expect slow video updates and choppy
sound. With broadband, expect telephone quality sound and a good enough
frame rate to make video chatting comfortable.
Q. Could I use iChat and iSight on my PowerBook using a Wi-fi Hotspot?
A. Theoretically, yes, you could have video chats from a Starbucks or other
Wi-fi access point. However, it really depends on how the Wi-fi point is
configured - the router may block the necessary ports. So it's a case of
"try it and see".
Q. Can I talk/see to Windows users?
A. Yes, there are video conferencing standards in existence, and if these are
adhered to and implemented properly it should mean that Mac applications could
connect to Windows applications - or even dedicated hardware solutions.
However, at the moment, the simplest way is to use iChat on the Mac, and AIM
on the Windows system. The results are nowhere near as good as an iChat to
iChat link, but it works. Also, consider iVisit, Yahoo Messenger, SquidCam
or ohPhoneX.
Q. Can I use Virtual PC on the Mac to use
MSN Messenger, and so talk to Windows users that way?
A. In theory it might work, in practice I've not got it to work using
Virtual PC 7 and a USB Logitech webcam. (Virtual PC will definitely NOT
support the FireWire iSight camera). The USB camera required drivers to work
on the Virtual PC, and installing them caused my iMac G5 to crash. Even if
it did work, Virtual PC is NOT fast at this kind of thing and would probably
not work very well at all with video conferencing. If you really need MSN
Messenger to work quickly with video, it's almost better picking up a cheap
PC.
Q. Do I need a driver for my webcam?
A. If your webcam is Firewire based and you are using OS X 10.2.x (Jaguar)
or better, then no drivers are required - its plug and play. If you are
using USB, then yes, you'll need to install a driver. See MacCam
or iChatUSBCam.
Q. Can I send pre-recorded material over the net?
A. Sure. If you have a camcorder, you could use the Firewire output to
replay footage as if it were live into iChat. Or you could use one of the
several Analog to Digital converters around, and plug it into your cable TV
box. Remember than a talking head is pretty
easy for video compression systems to work with, but a busy birthday
celebration on a beach or an episode of Star Trek Enterprise might not work so well. If you want to get into more
of a multi-casting situation, check out the Quicktime Broadcaster
application. I'm working on a page explaining how to set this up, check back
soon.
Q. Can I use iSight with iMovie?
A. Yes, you can with iMovie v4! Video is capture, and then a little extra
processing is done to convert it into the format used my iMovie.
Q. Can I iChat to send video to more than
one person at a time?
A. No, iChat is strictly one-on-one when it comes to video. To send video to
multiple people, look at evocam, VideoWeb or Quicktime Broadcaster. Or iVisit.
Apple have demonstrated the next version of iChat for Tiger, and it does
support up to four video windows at once - we'll know more when Tiger is
launched by mid 2005.
Q. Using iSight makes my computer crash!
A. One potential cause for iSight misbehaving is the very thin Firewire
cable it ships with - it seems the cable lacks shielding and other hardware
can cause interference: wireless mice for example. If you are having
problems, try a thicker cable. The standard lead also seems to be the root
of the "camera in use"
error. Try unplugging the lead, and reconnecting. Or using the lead from an
iPod.
Q. I can't use iChat AV, even though I have a fast Mac and a broadband connection!
A. Broadband can mean different things to different people: for example, in
New Zealand I know that users who pay for broadband get a download speed
that's a half or a quarter or the download speed I get in the US. The upload
speed is also reduced. The end result is iChat AV doesn't work. Similarly, if
you have a Satellite connection, it might be too slow, or the data rate
might be too inconsistent to get good results. So although iChat's specs
call for a "broadband" connection, I would guess this means the type of
DSL/Cable broadband than is common in the US and the UK - in other words, at
least 128kbps upstream, and 768kbps downstream. If this issue is causing you
problems, it's worth adjusting iChat's data rate settings from Preferences
to the lowest setting, or trying another conferencing program instead of
iChat.
Q. Something weird is happening after I upgraded to Panther!
A. It seems that some people are experiencing problems if one Mac is running
Jaguar (Mac OS 10.2) and the other is running Panther (10.3). This seems to
lead to one-way video only. I'm not sure there is a solution at the moment,
other than to update the Jaguar system (which is a worthwhile upgrade anyway).
Q. Do both iChat users need to be signed up with .Mac?
A. No, neither user requires a .Mac account. iChat AV supports both .Mac users and AOL/AIM users.
Anyone can sign up for free to get an AOL/AIM ID. Go to
http://aim.com to get an ID. Then in iChat go
to Preferences, Accounts and enter the AOL username and password.
Q. What's the cheapest way to do video conferencing?
A. Find some USB webcams going cheap on eBay. Use the MacCam
or iChatUSBCam.driver. Use ohPhoneX or iVisit lite.
Q. What's the money-is-no-option way to do video conferencing?
A. Make sure each Mac is at least a 800Ghz G4 running Panther. Buy an iSight
for each. Use the fastest broadband connection you can buy.
Q. I have Jaguar, and I just bought an iSight. Do I really need to buy
iChat AV?
A. Yes, yes you do. A version of iChat for Jaguar used to be available to
purchase, but not any more.
Q. Can iChat support multiple audio or video
chats at a time?
A. No, only multiple text only chats. If you want several people to see
a video or audio transmission, you’ll need to look into QuickTime broadcaster.
Q. When I click on someone's name, it opens in
AIM rather than iChat!
A. Use MoreInternet to make the default application iChat.
Q. Can I record iChat conversations? Or
conversations with any other video conferencing software?
A. Yes, to record video conversations with sound try
SnapzProX.
Q. Can I use iChat to talk to an older Mac
running OS9?
A. No, I'm afraid I don't know of any OS9 video conferencing solutions that
would support that. OS X is where it's at, baby..
|
Top Apple Resources
So you want to..
..Chat with someone who is using MSN
Instant Messenger on a PC.
Use the Mac version of the MSN Instant
Messenger client, from Microsoft's
Mactopia site. Or try one of the several third party chat clients,
such as Adium or
Fire.
..Video conference with someone who is
using MSN Instant Messenger on a PC.
Unfortunately, there doesn't appear to be
a Mac client for MSN messenger that supports video (or sound). One or
both of you will have to change their chat client.
So what is your favourite music on
iTunes?
Funny you should ask, it's
Warm Sound by Zero 7.
|