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The Digital Media Series XLR8 InterView USB |
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Regular readers to the web site know digital video is one of my favorite topics. I've spent a great deal of time playing with DV and FireWire, and I'll continue to look for new products that push the limits of digital video. But this week, I take a step back and look at a USB video solution, InterView from XLR8. InterView takes a composite or component video signal and converts it to digital video for USB. InterView is designed for any Mac system with USB, including the Power Mac G3, iMac,
iBook, PowerBook G3 or any USB upgraded Mac. InterView is ideal for transferring
small video clips or still video pictures to a UBS equipped-Mac. Besides the hardware,
InterView is also bundled with Strata VideoShop 4.5 for video capturing and editing.Inputs Video can be sent into InterView via either a RCA style composite connector or a s-video style component connector. The difference mainly is quality, with component video offering color separation for crisper images. For audio, users will need to use a provided adapter to connect an audio source into the Mac's microphone port. If a Mac has an alternative audio input, this can also be used, but either way the audio signal is captured separately from the USB video signal. Whenever I showed the device to people, the general response to the audio situation was less than positive. But when you think about it, this is pretty smart. Rather than burdening the limited USB with additional data, InterView saves its USB bandwidth for video alone. This enables users to capture high-quality audio without impacting video quality. Capture I tested InterView by capturing about a minute of video. The
320x240 movie was actually of pretty good quality. I edited the movie down to about
15 seconds for the web and the final uncompressed movie was about 60 MB with a data
rate of about 4.4 MB/sec. I then compressed the movie for web playback, bringing
the size down to 828 KB, with a data rate of about 61 KB/sec. The result was some
pretty spiffy video for a web site or email.
Overall I was pretty impressed with the movie capture part of the device. It worked
well up to 320x240, just as the specs say. The still image capture however is where
InterView fell short. As with the video, InterView captures up to 320x 240 without
any problems. However the specs say the device can capture stills at sizes up to
640x480 pixels. Unfortunately I don't agree. When I grabbed video stills at 640x480,
they were less than presentable. I tried different
ways of capturing stills, but results were the same. Unfortunately full screen video
stills just don't look good with this device.
Other than the input source, VideoShop never recognized my camera right away.
I often had to go into the capture utility to get it to recognize my video source.
I didn't need to alter the settings or anything, I just needed to open the video
input configuration and it would start working. Also InterView isn't exactly hot-pluggable.
If I unplugged the USB device while watching video in the capture window, I would
need to close and reinitialize the capture utility to get it to work. These are minor
details, but it's just not quite as slick as FireWire.
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