Ok so we have this huge issue of the images from GG adaptors being flipped. to un-flip the images requires a 2nd gen. of compression and a loss of image quality not to mention the PAIN of RENDERING AND shooting like that..can someone tear down a dvx100 and see if the ccd block can be rotated 180 degrees so that we would see the images right-side-up??? anyone? It seems to me this could be done...Juan?

Sounds dangerous! That's a lot of money on the line!

I see no reason there has to be a generation loss in the image flipping. Just render out to an uncompressed codec. That's the best way to work anyway :D.

it's a pain and I work with DV in a number of projects so uncompressed would not be a good option. I don't see why this can't be done. Juan has torn apart the dvx100 I bet he could answer this question better then anyone.

Excellent point!

I'm not sure I have the guts to tear my DVX apart!

well, suppodsely you can flip a DV stream without recompressing it.I just don't know which "open source project" supports that.
Same happens with Mjpeg and Jpeg, you can rotate and flip them without needing to recompress.
If you don't believe me look at the MJPEG Tools open source project.....
My two cents.

Well, if one of you guys has a handle on how this is accomplished, please share any info you have, including weblinks. I'm ignorant and unwilling to mutilate my XL2.

JS

I'm working on an inline circuit that will rotate the image coming out of the video port of the camera. It will also be able to add framing lines/boxes to the signal.

This won't help your editing problem though. I won't be taking my dvx apart anytime soon...

Flipping the DV stream sounds interesting though... Someone should tell those dudes over at dvrack to add that setting...

someone needs to get on the ball and write a little code to make this happen for editors like Adobe premiere FCP VEGAS and more..I bet a few $$ would flow in the direction of anyone willing to take this on..I sure know a few $$ from my company would be worth the price of the software if and when someone writes some code

Could be difficult to re-ajust the 3 ccds after the 180° rotation.

Mm yes, excellent point. It could be very difficult unless all three belonged to a single mount that could be rotated.

Maybe another point. Wouldn't you like to use the camera without an adapter?

What do you mean?

ok so what got me thinking is the Sony HDV cam has the 3 ccds mounted on a SINLGE bracket..would it not make sense that the dvx1oo is the same? can someone tell me if this is so?

AVISource("yourDV.AVI")
FlipVertical()


www.avisynth.org

http://www.videotools.net/

<<<-- Originally posted by Kyle Edwards : AVISource("yourDV.AVI")
FlipVertical()


www.avisynth.org

http://www.videotools.net/ -->>>

so is this without recompression?

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.

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).
"

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.

Monty Markland

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.

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.

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

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.

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.

After you are done editing recompression will happen. Not anytime before or during.