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-   -   NEO-HDV or NEO-HD (https://www.dvinfo.net/forum/what-happens-vegas/103688-neo-hdv-neo-hd.html)

Larry Secrest September 16th, 2007 04:28 PM

NEO-HDV or NEO-HD
 
I'm going to edit footage from the Canon XH-A1 in Vegas.
I was told by David from Cineform that I'll need either Neo-HDV or Neo-HD.

HD is twice the price of HDV. What is the practical difference?
I've noticed that the I/O Precision of Neo-HDV is 8-bit while the I/O Precision of Neo-HD is 10-bit. That's the only difference I see on this page: http://www.cineform.com/products/NeoHD.htm#FeatureSpecs

What does this mean for me on a practical point of view? Am I losing in quality by using Neo-HDV instead of HD?
Thanks
Larry

John Cline September 16th, 2007 04:40 PM

NEO-HD also has a maximum resolution of 1920x1080, NEO-HDV is limited to HDV resolution of 1440x1080.

Larry Secrest September 16th, 2007 05:15 PM

HDV is 1440x1920 anyway, right? So what's the problem?

John Cline September 16th, 2007 05:39 PM

No, that is not correct. HDV is 1440 horizontal by 1080 vertical. True HD is 1920H by 1080V. HDV is recorded to tape at 1440Hx1080V and it is stretched to display 1920Hx1080V upon playback.

Larry Secrest September 16th, 2007 06:02 PM

1080, that's what I meant and I wrote 1920.
Still why Neo HD instead of Neo HDV?

John Cline September 16th, 2007 06:26 PM

If you are doing only HDV, then NEO-HDV will be all that you need.

You will need NEO-HD if you are working with source files that are 1920x1080 or you are generating files that are true HD.

For example, I use the Blackmagic Design Intensity Pro capture card to capture the HDMI output from a Sony V1u. The camera portion of the V1u generates images at 1920x1080, but then the images are resized to 1440x1080, compressed to 25mbps MPEG2 and recorded to tape in the HDV format. However, the HDMI output of the V1u is taken before the images are resized and recorded to tape, so they are 1920x1080 and have not gone through the resizing and HDV MPEG2 compression. The resulting Intensity Pro files are 1920x1080, not 1440x1080, and require NEO-HD to maintain full HD resolution.

Larry Secrest September 16th, 2007 06:37 PM

I've heard that if I intend to do a lot of color correction even if I shoot HDV I could gain by using the 10bit capability of Neo HD, what do you think?

Bill Ravens September 16th, 2007 07:26 PM

If you're doing CCing, the more bits you have available, the better off you are to avoid banding. It's a slightly different issue when we're talking about capture from an 8-bit source. It's debateable whether capturing 8-bit with 10-bit depth is really necessary. I think not. But, most certainly, the more bit depth you have available for CCing and FX, the better off you are. When you go to render out to final form, staying in 10-bit can be very beneficial. Obviously, if you're going to an 8-bit format, you have no choice.


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