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ClearVideo -- also known as RealVideo (Fractal) -- is made by Iterated Systems,
based on their patented fractal technology. It is optimized for low data rate movies
over the WWW. It is best suited to material with fairly low motion.
This codec is essentially discontinued at this point; the ClearVideo encoder
is no longer sold.
Architectures Supported
Pros
- well suited to WWW video and corporate LAN/WAN applications.
- for RealMedia: often produces higher quality than RealVideo (Standard) above 3KBps;
works on somewhat lower-end Pentiums than RealMedia (Standard).
Cons
- Discontinued & unavailable for individual purchase
- The QuickTime version requires the user to install the codec seperately,
and is not compatible with QuickTime 3 for Windows
- ClearVideo requires at least a midrange Pentium or PowerMac for playback.
Note: Progressive's free RealVideo encoder includes a demo version
of the Fractal codec, which is a version of Iterated's ClearVideo. If you wish to use
the Fractal codec for data rates above 5 KBytes/second with RealVideo, you must
purchase Iterated's ClearVideo codec; the demo version will watermark movies at data rates higher than 5 KBytes/second.
| Ideal source material |
Video with relatively low motion, around 3-30KBytes/s |
| Supported bit depths |
32-bit color |
| Compression time |
About 4x as slow as Cinepak |
| Temporal compression? |
Yes |
| Special features |
- |
| Encoder requirements |
PowerMac, Pentium |
| Decoder requirements |
PowerMac, Pentium |
| Encoder availability |
No longer sold individually |
| Decoder availability |
RealMedia: built-in
QT: Freely available from Iterated |
| Algorithm |
Fractal |
| Manufacturer |
Iterated Systems, Inc. |
If you have any comments or tips & tricks to share
about ClearVideo, please contact us at
info@terran-int.com.
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