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Camera Tips
Tips regarding various cameras we have actually used and how we have
connected them to our computer. We are currently running Windows XP SP2 on
most of our machines. (We also have tested HandyAvi on Windows 2000 and
Vista of course.)
Definitions
We define some terms here so that you will know for sure what we are
talking about further down this page.
- Webcam - small camera that plugs directly into the USB port on a
PC computer. Manufacturers include Philips, Logitech, Labtec,
Creative Labs, Microsoft and others. Webcam chips come in two
varieties:
- CCD - Preferred by astronomers because of better performance
in low-light conditions, i.e., they tend to be more sensitive.
- CMOS - Cheaper
- NTSC - the output signal produced by most hand-held video
cameras, DVD players, VHS players, security cameras. NTSC is
the signal used by broadcast television (prior to digital television
anyway). NTSC is a VERY widely used video standard in MANY
countries. (NTSC is used in the USA.)
- PAL - Similar to NTSC but it is used in even MORE countries than
those using NTSC! (PAL is used in Europe)
- S-Video - a video signal that is delivered by a 4 pin circular
plug. Typically a better quality signal.
- Phono plug - Plug that was developed for audio applications but
often also used to deliver video signals.
- BNC connector - specialized coaxial cable connector used on
high-quality equipment. It "locks" with a twist so cannot be
jerked loose like a phono plug.
Webcams
The cameras we test with and use to make our own movies include the
following:
- Philips PCVC 740K ToUcam. A favorite among amateur
astronomers. This is a CCD camera that works well in low-light
conditions. No longer in production.
- Philips SPC 900 NC/00 PC Camera. Also a favorite among
amateur astronomers. This is also a CCD camera and appears to
be the successor the to PCVC 740K.
- Logitech Quickcam. An older CMOS camera that we
test with because its driver is "peculiar". (Unlike most other
camera drivers, the Quickcam driver does not "go away" when the
camera is unplugged. We had to do extra work to protect you
from this anomaly.)
- Logitech Quickcam 4000. A CMOS camera that seems to
perform pretty well under low-light conditions. (We have had good
results making movies of Jupiter, etc.) The driver for this camera
does a better job of removing itself when the camera is unplugged.
USB Video Adapters
USB Video Adapters allow NTSC and PAL cameras to be connected to the
computer's USB port.
In order to connect a typical surveillance camera to HandyAvi, you need
an adapter that converts NTSC to USB.
These adapters are readily available and many companies are selling them.
There is a lot of variation however and each type of adapter has it own
features. Some have "quirks". We wonder why different adapters
have different restrictions on image sizes supported...
"USB 2.0 Video Adapter with Audio"
We have successfully used a "USB 2.0 Video Adapter with Audio"
device with HandyAvi. This adapter seems to work well and we've
used it during the Geminid meteor shower to capture meteor trails with a Watec WAT-902H2 Ultimate
camera.
This adapter allows selection of image sizes of 160x120, 176x144,
320x240, 352x240, 640x240, 640x480, 720x240, 720x480, 352x480 or
360x480.
Powers itself from the USB port. No external power supply is
required.
"EasyCAP Video Adapter with Audio"
We have also successfully used the "EasyCAP Video Adapter with Audio" (Model
Number DC60) device with HandyAvi. It has some peculiarities though that you should
be aware of.
USE CAUTION WHEN USING THIS DEVICE. DO NOT UNPLUG IT FROM THE USB
PORT IF IT IS SELECTED FOR CAPTURE.
Also, it defaults to "TV Tuner" mode so is not initially
looking for your camera. In HandyAvi, you will need to bring up one of
the Capture modes such as "Time-Lapse Images..." You should see an
item in the Capture Device list that says "Syntek STK1150". This is
the EasyCap device. Select it then click on Video Source. That
will bring up the manufacturer's "Properties" window seen below.
The device comes up with "TV Tuner" set. (It doesn't
come with a TV Tuner so that is a pretty strange default...) Change that to "Composite Video".
It defaults also to PAL /B so
select NTSC/M if you are in the USA using NTSC video. (NTSC
/M is North American NTSC, NTSC/J is Japanese NTSC.)
In Europe, you
probably will want to select one of the PAL types. Close the window.
Be prepared to wait for 60 seconds until video shows up in the Live Video
Preview window. This delay also occurs after you change "Video
Format...".
We have completed our investigation into this strange delay behavior. The EasyCap device creates a 60 second delay when its audio is not attached.
We attached the audio (but we don't "use" it in HandyAvi) in our new unreleased version of HandyAvi and
the delay no longer occurs. However unplugging the device from the
computer's USB port when it is selected causes applications using EasyCap to "hang". This
is true for for the "Ulead Video Studio SE" application that ships
with EasyCap and it also occurs in all other software systems we've tested using EasyCap. This appears to be a problem with the EasyCap driver.
We've been unable to locate a driver update.
AGAIN, USE CAUTION WHEN USING
THIS DEVICE. DO NOT UNPLUG IT FROM THE USB PORT IF IT IS SELECTED FOR
CAPTURE.
It also initializes with a default image size of 720x576. To
change the image size, select "Video Format..." in HandyAvi.
Strangely, you will see that none of the possible selections are
720x576! However, you can select one of the following:
160x120, 176x144, 320x240, 352x240, 352x288, 640x480 or 720x480.
Powers itself from the USB port. No external power supply is
required.
Diamond Multimedia "One Touch Video Capture"
We have successfully used this adapter with HandyAvi. The
adapter seems to work well.
This adapter allows selection of image sizes of 352x576, 352x288 or
720x576 only.
Powers itself from the USB port. No external power supply is
required.
We have ordered three other manufacturer's adapters for testing and
will post results here when they arrive and we have tested them...
NTSC Cameras
We have a Watec WAT-902H2 Ultimate camera that produces an NTSC signal.
Why this camera? Because it is one of the most sensitive cameras
that is currently being manufactured. It is sensitive to .0001 Lux
according to the manufacturer. This is VERY sensitive to very low
levels of light and ideal for certain astronomy applications such as making
videos of meteors and, possibly, meteor strike flashes on the dark side of
the moon (although no one has successfully captured a meteor strike flash
yet... You could be the first...)
We bought a RadioShack cable that has a Female BNC connector on one end
and a Male Phono plug on the other end.
We connect the cable's BNC connector to the camera's BNC connector then
we plug the phono plug into a USB Video Adapter.
We bought a "USB 2.0 Video Adapter with Audio". It has a female phono plug that accepts a male phono plug. The other end has a USB
plug.
We plug the USB end into the computer's USB port.
Then we bring up HandyAvi and open Capture/Time-Lapse Images...
We see, in the Capture Device list, an item that says: "USB 2821
Video". If the camera is powered up, we see its video in the "Live
Video Preview" window. Similarly for the other Capture menu modes.
We upgraded the "Capture Device" panels of our various "Capture" methods
to display the "Video Source" for adapters or other video devices that allow
a choice of video input. The "USB 2.0 Video Adapter with Audio"
allows input from either an NTSC or PAL camera video source. In
addition, it can accept data from an S-Video source.
If HandyAvi is connected to a device that offers a choice of video
sources, it will now display a "Video Source..." button in the "Capture
Device" panel allowing you to bring up the manufacturer's source selection
window.
Video Boards
We have one video board, a WinTV PVR-250 board that is normally used to
watch television on a PC. The board also has:
- A TV input Phono jack
- An S-Video composite video input jack
- An audio input jack (Line-in)
- A remote control (IR) receiver socket
The TV input Phono jack can be used to input an NTSC signal from a
camera or a VCR.
The board will also deliver video signals from an S-Video device such as
a VCR or DVD player.
HandyAvi can see the video data IF the Win2000 WinTV application
(software that comes with the board) is running. We have been unable
to "turn the board on" purely from within HandyAvi. Some people are
successfully using the board with HandyAvi while running Win2000.
Recent modifications to a new, as yet unreleased, version of HandyAvi now
exposes the manufacturers "TV Tuner" window if their driver support this
feature. We have used this to gain control over the TV tuner of a
WinTV 885 system that came with an "HP Media Center PC" and change channels
and view Television from within HandyAvi. We have also successfully
fed the NTSC signal from our NTSC cameras into the Composite Video port of
the WinTV device and have successfully accessed the camera's video using
HandyAvi. There were two different "Composite Video" choices and we
had to try each one to see which one would deliver a signal.
The video produced by this board looks exceptionally clean! Very
sharp images...
This board allows selection of image sizes of 80x60, 88x72, 128x96,
160x120, 176x144, 240x176, 240x180, 320x240, 352x240, 352x288, 640x240,
640x288, 640x480, 720x240, 720x288 or 720x480.
Vista Driver Installation Tips
We were surprised that the ToUcam 740K and the "USB 2.0 Video Adapter with Audio"
drivers would not install on Vista. The vendors of these devices have not
provided Vista drivers. However the Windows XP drivers for these devices
will work in Vista. We managed to install them and we are currently using
them in our Vista systems. See Vista Tips
Things that didn't work
We bought an "InstantDVD+MP3" device from ADS Tech because it
looked like it might work with HandyAvi. We tried to make it work with
HandyAvi then finally wrote the manufacturer.
We received the following reply:
"Unfortunately, because this device is hardware
encoded, it requires specific software for its video capture correctly.
So basically, it will only be compatible with the software that it is
bundled with for the video capture aspect of the device."
(We still think that with enough research we might
get it to work but we are not devoting time to that at the moment given that
good USB video adapters work well with HandyAvi. We tried again more
recently but the device doesn't even show up in the USB device list shown by
Microsoft's Device Manager. Very puzzling...)
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