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Canon HV10 High Definition Camcorder

reading your review, I'm thinking about getting the HV10 from Canon.
If I get it, we can review it for your site.

but do you know what this means:

"It can capture video at the full 1920 x 1080 interlaced resolution, however the horizontal resolution is reduced when it is stored to tape in the HDV standard of 1440 x 1080 resolution."

Thu, 11 Jan 2007 15:21:17 -0800

HDV (High Definition Video) is the technology that allows you to store high definition footage on standard DV tapes. HDV allows you to store a full hour of video on a standard one-hour DV tape. It accomplishs this via MPEG-2 compression, which is the same compression that a DVD uses.

Unlike DV, where the image quality is preserved without any loss, MPEG-2 is very similar to JPEG in that the compression allows for image artifacts. In MPEG-2, these artifacts are motion-induced.

HDV 1080i uses a pixel aspect ratio of 1.33 and has pixel resolution of 1440×1080. On HDTV, the resolution is scaled to 1920×1080. 1440 x 1.33 = 1915.2

Chieh Cheng
Thu, 11 Jan 2007 17:37:41 -0800

so, it's stretched?!

that would still scale okay?
okay...I think I get it...sort, not true 1080?

I guess there is no 1080p which seems all the rage these days...people putting down 1080i or something like that...

Thu, 11 Jan 2007 18:29:07 -0800

It's not stretched. Because the camcorder captured the image at 1920 x 1080, compressed it to 1440 x 1080 for storage, than re-expanded it to 1920 x 1080 for display. The final result would be the same aspect ratio as the scene.

The stored video is still 1080, just not 1920. A little bit of data is lost in the interpolation from 1920 to 1440. I don't know if you would see a difference though.

Progressive-scan (1080p) just means you have the full image every frame. Interlaced (1080i) means each frame has only half the image. All "video" (made by camcorders) are interlaced at 60 frames per second. Films and post-processed movies are usually full images at 25 or 30 frames per second.

Chieh Cheng
Thu, 11 Jan 2007 20:48:15 -0800

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