Splitscreen and jumping pixels at DVinfo.net

Mikael Widerberg · March 21st, 2006, 05:45 AM

I did now about the splitscreen-effect before. But I was only having it against my white-painted wall att home, so I wasnt to worried...until I looked at this clips filmed in perfect conditions (here is a jpeg from the timeline http://www.plonk.se/pixelsandsplitscreen.jpg .

I have SSE on lots of clips where there is a bloue sky.

Another thing; look at the pixels in the image, the are very big and is jumping around. Looks very bad to me.

Is it possible to fix these problems with an upgrade of the chip?

I have GY HD100E Pal-version.

Andrea Toniolo Vi · March 21st, 2006, 08:54 AM

hi,

one question: is this filmed in 25p or 24p?
I think is 25p.

For the SSE you need a recalibration, my hd100e after a calibration and a warming of 15/20 minutes are ok.

For the jumping pixel in the sky probabilly is caused by the SSE that in your case seems to be red-pixel.

cya

Jiri Bakala · March 21st, 2006, 08:54 AM

Quote:

Originally Posted by Mikael Widerberg

Is it possible to fix these problems with an upgrade of the chip?

There is no upgrade of the chip. If you have a lot of the SSE, try to have the camera re-calibrated or replaced. The upgrade doesn't replace the chips.

Panos Bournias · March 21st, 2006, 12:43 PM

Try to recalibrate the camera with JVC, if the split screen appears only when you use max gain and even then just occasionally, in extreme conditions, then the camera is fixed and OK.
For the jumping pixels I cannot see them at your picture. I see a magnification 2X that normally blows out the pixels of the image.
You meen maybe on the moving image you see some kind of noise, blocks of color...?
By recalibrating hopefully your problems will be solved.
Panos B

Tim Dashwood · March 21st, 2006, 01:14 PM

Mikael,

I see the SSE and it is unfortunate it happened to you in such nice conditions. I would definitely take it in for service/calibration.

What gain set to 0dB? What gamma setting were you using?

Is your camera one of the originals released in Europe last summer?

As for the "jumping pixels," I'm not sure exactly what you are referring to. I see compression artifacting in your frame grab, but I'm not sure if it is from JPEG compression or MPEG compression on the original m2t.

Mikael Widerberg · March 21st, 2006, 02:31 PM

The jumping pixels are on the originals m2T-files and looks the same on the jpeg image as well. The jumping pixels are quite big blocks that jumps around on the moving image, i wish it would have been tiny pixels insted.

And yes, its filmed in 25P with all settings on default. Manual expouser and white balance. I use Aspect HD, latest version. The cam is one of the first that came out last september.

I have to take it in for a service, absolutly. I will have to send it to New Zeland from Sweden :( or send it to "JVC Professional Europe" in England and pay for the service as well :(

Thanks!

Andrea Toniolo Vi · March 21st, 2006, 03:57 PM

if you confirmed that is filmed in 25p the problem is in the firmware upgrade. I had that type of problem in my camera when filmed with 25p (before the upgrade);

Anyway in the "old" version if you try in 24p you see no compression artifacts at all.

After the firmware upgrade the 25p will be better.

March 21st, 2006, 05:45 AM	#1
Mikael Widerberg Regular Crew Join Date: Mar 2005 Location: Stockholm Sweden Posts: 73	Splitscreen and jumping pixels I did now about the splitscreen-effect before. But I was only having it against my white-painted wall att home, so I wasnt to worried...until I looked at this clips filmed in perfect conditions (here is a jpeg from the timeline http://www.plonk.se/pixelsandsplitscreen.jpg . I have SSE on lots of clips where there is a bloue sky. Another thing; look at the pixels in the image, the are very big and is jumping around. Looks very bad to me. Is it possible to fix these problems with an upgrade of the chip? I have GY HD100E Pal-version.

March 21st, 2006, 12:43 PM	#4
Panos Bournias Regular Crew Join Date: Sep 2005 Posts: 109	recalibration Try to recalibrate the camera with JVC, if the split screen appears only when you use max gain and even then just occasionally, in extreme conditions, then the camera is fixed and OK. For the jumping pixels I cannot see them at your picture. I see a magnification 2X that normally blows out the pixels of the image. You meen maybe on the moving image you see some kind of noise, blocks of color...? By recalibrating hopefully your problems will be solved. Panos B

March 21st, 2006, 01:14 PM	#5
Tim Dashwood Wrangler Join Date: Aug 2005 Location: Toronto, ON, Canada Posts: 3,637	Mikael, I see the SSE and it is unfortunate it happened to you in such nice conditions. I would definitely take it in for service/calibration. What gain set to 0dB? What gamma setting were you using? Is your camera one of the originals released in Europe last summer? As for the "jumping pixels," I'm not sure exactly what you are referring to. I see compression artifacting in your frame grab, but I'm not sure if it is from JPEG compression or MPEG compression on the original m2t. __________________ Tim Dashwood

March 21st, 2006, 08:54 AM	#2
Andrea Toniolo Vi New Boot Join Date: Nov 2005 Posts: 12	hi, one question: is this filmed in 25p or 24p? I think is 25p. For the SSE you need a recalibration, my hd100e after a calibration and a warming of 15/20 minutes are ok. For the jumping pixel in the sky probabilly is caused by the SSE that in your case seems to be red-pixel. cya

March 21st, 2006, 02:31 PM	#6
Mikael Widerberg Regular Crew Join Date: Mar 2005 Location: Stockholm Sweden Posts: 73	The jumping pixels are on the originals m2T-files and looks the same on the jpeg image as well. The jumping pixels are quite big blocks that jumps around on the moving image, i wish it would have been tiny pixels insted. And yes, its filmed in 25P with all settings on default. Manual expouser and white balance. I use Aspect HD, latest version. The cam is one of the first that came out last september. I have to take it in for a service, absolutly. I will have to send it to New Zeland from Sweden :( or send it to "JVC Professional Europe" in England and pay for the service as well :( Thanks!

March 21st, 2006, 03:57 PM	#7
Andrea Toniolo Vi New Boot Join Date: Nov 2005 Posts: 12	if you confirmed that is filmed in 25p the problem is in the firmware upgrade. I had that type of problem in my camera when filmed with 25p (before the upgrade); Anyway in the "old" version if you try in 24p you see no compression artifacts at all. After the firmware upgrade the 25p will be better.