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Uncompressed Video

Question: Will using Indeo® video interactive to recompress my Release 3.2 video clips improve quality?
No. Compress raw, uncompressed source video files using Indeo video interactive. Do not recompress the video files you've already compressed using Release 3.2.


Question: Can Indeo® video interactive be edited like Indeo video Release 3.2?
Yes, but it's not recommended. It's best to capture and edit using uncompressed data, such as the Indeo Raw format, and then compress with Indeo video interactive, to minimize the problems that can occur when you edit compressed data.


Question: What is the Intel Smart Video Recorder III and what does it do?
The Intel Smart Video Recorder III (ISVR III) is a video capture board offered by Intel. It is capable of one-step capture and compression of Indeo video Release 3.2 video data with a resolution of 320 by 240 at thirty frames per second on a Pentium® processor-based system. The ISVR III can also capture video in a nearly lossless format called Indeo video Raw for later off-line compression using either Indeo video interactive or Indeo video Release 3.2. The ISVR III can accept composite or S­video inputs from any NTSC or PAL analog video source.


Question: What is Indeo® video Raw?
A video image can be represented using three components called Y, V, and U. Y represents the luminance, or brightness, part of an image-essentially a black and white picture. V and U together represent the chrominance, or color, part of an image: V represents saturation and U represents hue. Indeo video Raw is a video data format in which the 24­bit RGB data is converted to YVU, then the V and U is reduced until the signal uses only nine bits per pixel.


Question: What's the difference between Indeo® video Raw and YVU9C?
The YVU9C format is the same as Indeo video Raw, but files in this format are compressed to roughly half the size as files in the Raw format. When capturing in Indeo video Raw, the input signal is only subsampled; but when capturing in YVU9C, an extra step of nearly lossless compression is performed by the Intel Smart Video Recorder III. Capturing in YVU9C reduces data rate during capture, allowing capture at higher frame rates without dropping frames. YVU9C does not impose any signal loss when compressed offline with Indeo video Release 3.2. Some signal loss occurs, however, if video captured in YVU9C format is later compressed using Indeo video interactive. The YVU9C driver is available at all of our electronic distribution sites as a file named YVU9C.EXE.

If you plan to use the transparency features of Indeo video interactive, you'll get better results if you capture into an RGB 24 or motion JPEG format instead of Indeo video Raw or YVU9C. This strategy avoids multiple color conversions, with the inevitable resulting degradation.



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