can someone crack open the dvx100 and rotate the CCD block?? - Page 2 at DVinfo.net

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Old January 29th, 2005, 11:24 PM   #16
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Correct. It's a frame server, there is no compression/decompression. A pseudo-AVI. You can even keep the file in the same colour space with certain commands.

But if you bring it into Premiere...I think it's edited in RGB anyway...I forget. Probably not.
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Old January 30th, 2005, 12:52 AM   #17
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jpegtran

here is a link to a command line utility that may be good for what you want to do:


http://www.rt.com/man/jpegtran.1.html

" jpegtran works by rearranging the compressed data (DCT
coefficients), without ever fully decoding the image.
Therefore, its transformations are lossless: there is no
image degradation at all,...

The image can be losslessly transformed by giving one of
these switches:

-flip horizontal
Mirror image horizontally (left-right).

-flip vertical
Mirror image vertically (top-bottom).

-rotate 90
Rotate image 90 degrees clockwise.

-rotate 180
Rotate image 180 degrees.

-rotate 270
Rotate image 270 degrees clockwise (or 90 ccw).
"
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Old January 30th, 2005, 02:04 AM   #18
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Using the camera without the adapter

Aaron,

I preface this post with the caveat that I am a complete newb at all of this...

I believe James is referring to the fact that if you rotate the device(s) on the image plane, then, whenever you captured an image without the adapter attached, the image would be upside down.

By physically rotating the CCDs you trade a flipped image with the adapter for a flipped image without the adapter.

To eliminate the flip in both cases you'll need to alter the image before it gets to the image plane, or after it has left the image plane.

Either before inside the adapter, between the adapter image plane and the capture image plane or, after the capture image plane by modifying the signal, as some of the posters are discussing.

From a non-technician's point of view, it seems like flipping the signal after the capturing image plane is more conceptually sound.

From what I've read in the past week, people already do that by putting a magnet under the viewfinder on some cameras and flipping in post.

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Old January 30th, 2005, 03:16 AM   #19
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why some guys are always doing it the hard way ?
go to australia to shoot peaople walking on the head ?

why not just put the camera upside down ? it is the same than rotating the CCD.
and this will solve only half of the problem... you still need to mirror the picture.
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Old January 30th, 2005, 07:30 AM   #20
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I suggested this before, but it looks to me much easier and less risky to crack open the LCD screen end find a way to flip (and mirror) the LCD glass. Maybe it's to compact to do it, but I'd rather try that first.
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Old January 30th, 2005, 09:19 AM   #21
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Post is the issue I can use aLCD screen on top of the camera and or a CRT professional monitor and have it sitting upside down..this is not that bad..the worst is the render of every single clip and the issue of editing i need the image flipped in post with no loss of quality
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Old January 30th, 2005, 09:39 AM   #22
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Thats exactly what the avisynth program someone posted earlier will do.

You just run a script to flip the vertical axis. No quality loss ect.
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Old January 30th, 2005, 04:04 PM   #23
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jpegtran is not Avisynth related.
Also if you were using Avisynth you would be decompressing-compressing the image.
Fliping an image thru Avisynth means you need to RECOMPRESS, period.
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Old January 30th, 2005, 05:49 PM   #24
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After you are done editing recompression will happen. Not anytime before or during.
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