periodic strobing image at DVinfo.net

Alan Ortiz · February 20th, 2008, 04:39 PM

I can't find anything about this particular problem anywhere on the net, so im desperately hoping that somehow im doing something wrong and dont have a lemon.

when i first bought the cam, the footage would periodically do this "strobbing" thing where the footage would be playing back fine, and then suddenly look like i had switched to a much lower shutter speed (of course, the image stays the same level of exposure, so its LIKE running at a slower speed, but not.) does this make sense? to understand what im talking about run your cam at 24p 1/48 sec and then switch it to 1/12 or 1/6, but imagine that the image did NOT just get brighter. Okay, so it will do this on tape, and it will do it when recording to laptop, or FS4. So its definately not a tape issue.

the problem is that now its getting more frequent and while at first it didnt really ruin any shots its so unpredictable that i cant keep running the camera wondering if its going to ruin certain shots. Has anyone had the this problem? Do any of the guru's have any experience on this? Tim, Paolo or Carl Hicks? Thanks!

Alan

Alan Ortiz · February 21st, 2008, 01:20 PM

okay thats funny 100 views and no one has had this problem. maybe its because it was firmware related. just so everyone knows, ive updated the firmware (it was already at the "A" upgrade) using the sticky posted here, and now the problem has disappeared entirely (i hope). I let it run tethered up to dvhscap for 40 min and no weird frame problems at all. ill try it with tape and know for sure then. thanks to everyone who looked!

Justin Ferar · February 21st, 2008, 01:31 PM

Is this with the 110 or 200 or 250?

I have 2 HD200's- never seen what you are describing.

Alan Ortiz · February 21st, 2008, 01:57 PM

i have a 100 (now a 101 according to the firmware update). Yeah i dont think anyone has but the firmware update has apparently eliminated the problem entirely. im a happy shooter again. :)

Thomas Weilguny · February 26th, 2008, 02:01 PM

Are you sure it´s the source footage?

I´ve had a similar problem when capturing with dvhscap that the original (m2t) footage looked good, but on converting seemed to drop to half framerate.
Was hard to reproduce and haven´t really figured out why...

Alan Ortiz · February 28th, 2008, 08:45 PM

could be- its sorted out now though so not really sure what changed when i upgraded the firmware.

Chris Hurd · February 28th, 2008, 09:15 PM

Please avoid ambiguous thread titles. Changed from "Anyone seen this...?" to "periodic strobing image."

February 20th, 2008, 04:39 PM	#1
Alan Ortiz Major Player Join Date: May 2006 Location: Washington, D.C. Posts: 392	periodic strobing image I can't find anything about this particular problem anywhere on the net, so im desperately hoping that somehow im doing something wrong and dont have a lemon. when i first bought the cam, the footage would periodically do this "strobbing" thing where the footage would be playing back fine, and then suddenly look like i had switched to a much lower shutter speed (of course, the image stays the same level of exposure, so its LIKE running at a slower speed, but not.) does this make sense? to understand what im talking about run your cam at 24p 1/48 sec and then switch it to 1/12 or 1/6, but imagine that the image did NOT just get brighter. Okay, so it will do this on tape, and it will do it when recording to laptop, or FS4. So its definately not a tape issue. the problem is that now its getting more frequent and while at first it didnt really ruin any shots its so unpredictable that i cant keep running the camera wondering if its going to ruin certain shots. Has anyone had the this problem? Do any of the guru's have any experience on this? Tim, Paolo or Carl Hicks? Thanks! Alan

February 21st, 2008, 01:20 PM	#2
Alan Ortiz Major Player Join Date: May 2006 Location: Washington, D.C. Posts: 392	okay thats funny 100 views and no one has had this problem. maybe its because it was firmware related. just so everyone knows, ive updated the firmware (it was already at the "A" upgrade) using the sticky posted here, and now the problem has disappeared entirely (i hope). I let it run tethered up to dvhscap for 40 min and no weird frame problems at all. ill try it with tape and know for sure then. thanks to everyone who looked! Last edited by Alan Ortiz; February 21st, 2008 at 01:58 PM.

February 21st, 2008, 01:31 PM	#3
Justin Ferar Major Player Join Date: Aug 2006 Location: Larkspur, CA Posts: 378	Is this with the 110 or 200 or 250? I have 2 HD200's- never seen what you are describing. __________________ www.justinferar.com www.weddingsonfilm.com

February 28th, 2008, 09:15 PM	#7
Chris Hurd Obstreperous Rex Join Date: Jan 2001 Location: San Marcos, TX Posts: 27,368 Images: 513	Please avoid ambiguous thread titles. Changed from "Anyone seen this...?" to "periodic strobing image." __________________ CH Search DV Info Net \| 20 years of DVi \| ...Tuesday is Soylent Green Day!

February 21st, 2008, 01:57 PM	#4
Alan Ortiz Major Player Join Date: May 2006 Location: Washington, D.C. Posts: 392	i have a 100 (now a 101 according to the firmware update). Yeah i dont think anyone has but the firmware update has apparently eliminated the problem entirely. im a happy shooter again. :)

February 26th, 2008, 02:01 PM	#5
Thomas Weilguny Regular Crew Join Date: Nov 2006 Location: Vienna, Austria Posts: 51	Are you sure it´s the source footage? I´ve had a similar problem when capturing with dvhscap that the original (m2t) footage looked good, but on converting seemed to drop to half framerate. Was hard to reproduce and haven´t really figured out why...

February 28th, 2008, 08:45 PM	#6
Alan Ortiz Major Player Join Date: May 2006 Location: Washington, D.C. Posts: 392	could be- its sorted out now though so not really sure what changed when i upgraded the firmware.