Infoseite // Rolling Shutter for JVC GZ-HD7?



Frage von starcat:


Hello Leite,

I think the rolling shutter effect on my working with CCD JVC GZ-HD7 to be seen. When the camera is quickly gepannt, rückelt as if the recorded picture frames gedroped be. OIS is turned off and I film on a perfectly set Glidecam HD-1000 or even on tripod. Comes of the compression of interlaced or of record, right?

Somebody has an HD7 and is switched to the HM100? What experience?

Thank you in advance!

Space


Antwort von tommyb:

Short sample video of hand?

Space


Antwort von starcat:

Yes, under http://members.chello.at/starcat/test.m4v

Space


Antwort von JonasB:

Where the hell as the rolling shutter effect be? ... Because I think of nothing wobbles: P

MFG

Jonas

Space


Antwort von tommyb:

The ride is fluid, but somehow stops the Picture. The kitchen cabinets appear to run across the picture to jerk.

Is the image stabilization was turned off? It was shot in 50i with 1 / 50 shutter?

Did you deinterlace the material? Possibly. lies s.Deinterlacer. When used as a technique "blending", just try something different. The unprocessed raw material should not have the effect on each case. Otherwise, the camera once synonymous s.den TV and connect times for inspection.

Space


Antwort von starcat:

It was shot in 50i, then deinterlaced. I have not seen, however, as the setting was Schutter (; automatic), there was very little light!? OIS was turned off. The stutter is synonymous seen in the original recording before s.Computer deinterlace to (; Eizo CG241W), on the camera monitor sees no stutter.

Thank you very much!

Space


Antwort von Bruno Peter:

"CCDs working with JVC GZ-HD7"

Did CCD camera detected a rolling shutter?

Space


Antwort von tommyb:

The effect is not rolling shutter, then straight lines would be wrong (in the pan; synonymous wenns there are few straight lines in the example video).

This occurs because what I would rather interpret it as a problem of codecs. When inter-frame coding vectors are used to store object movement between two images as efficiently as possible (is efficient = high) as small as possible and qualitatively. Like all here, but "jerky", seems not fully comply with the Vector Calculation. The objects move jerkily, and synonymous only every two frames.

I could certainly imagine that it could be programmed s.Editing, perhaps it is s.Intermediate codecs, used so far.

If you are you the original files in VLC Player (; including Bobbing) anschaust and it still similar to jerky, it could sometimes even be because the camera build in the digital video stream just not with the rapid movements confused with it. But opposed to properly playback on the camera monitor.

With an I-frame based codec that had not happened;)

Space


Antwort von starcat:

Thank you for your answers! The original stutter. TOD files directly from the HD7 as well! Has anyone an explanation?

Here. TOD file directly from the Camera - Streamclip or VLC / QuickTime on Apple with MPEG-2 plugin to play it off. Shutter set to 1/100s, turned off OIS: http://members.chello.at/starcat/MOV009.TOD (; 22MB). So come directly from the camera so!

Space



Space


Antwort von tommyb:

The original material jerky is not in the same way and manner.

I will upload the same time 25p and 50p material which I have walked out of the Testclip. Perhaps the problem lies in the software on your system - possibly a bad working deinterlacer to blame.


edit:
http://rapidshare.com/files/267699466/50p25p.zip.html

here are two AVI files (; are with XviD). Once again 50p and 25p. Both where in order. The 25p version jerky accordingly by the 25 pictures, but not like to see your example video.

Space


Antwort von domain:

Your material was recorded with 30 fps. Since it can occur in projects with 25p or 50i to difficulties.

Space


Antwort von starcat:

404ERR

Space


Antwort von tommyb:

Oh shit, that I have not even respected. It is, in fact, 60i. That which is on Rapidshare is therefore 60p and 30p.


The Problem:
If it in Quicktime Player jerky, then the problem is the fact synonymous. Here, nothing jerky.

Space


Antwort von starcat:

I have looked at the recording times for Picture Picture. If the cam is rotated slowly, the difference between adjacent low-interlaced images and the play is fluid. But if the pivot is done quickly, then this difference is much greater and the picture is stuttering / jumping on playback. I'm not sure whether I correctly describe the phenomenon ... However, I see neither s.eingebauten monitor or s.Plasma display via HDMI. Has this something with the de-interlacer to do?

PS: It rückelt synonymous and synonymous in Streamclip program in the editing, but anyway all use the drunterliegende QuickTime in Mac OS X. VLC seems to be in playback of a track better.

Space


Antwort von domain:

If your clip is observed smoothly in any mode and on any hardware that you describe indeed positive, then you can be sure that the clip is in s.sich Ordung.
In addition, the posts would blow over the jerking alone in this forum many volumes, so there are the observations and the causes, which plays an essential role synonymous physiology of the eye.

Space


Antwort von starcat:

Should I try to shoot 60i with 1/60s shutter speed? My last test was at 1/100s with 60i. Thank you!

Space


Antwort von Daigoro:

"Starcat" wrote: Should I try to shoot 60i with 1/60s shutter speed? My last test was at 1/100s with 60i. Thank you!

No, you shall not at filming with 60 something.
All the problems are self-made.

Space


Antwort von motiongroup:

why not Diagoro ... He has an NTSC model, the HD7 can only 60i and record the no preference whether in Full HD or HDV modes ...

Space



Space


Antwort von starcat:

"Daigoro" wrote: "Starcat" wrote: Should I try to shoot 60i with 1/60s shutter speed? My last test was at 1/100s with 60i. Thank you!

No, you shall not at filming with 60 something.
All the problems are self-made.

Why not? I do not go to DVD and PAL 50Hz with no preference is totally me! I do not synonymous transform. All I can display 24p, 25p and 30p. What I want is "just" a liquid with 60i playback on my Mac.

Yes, I have the U.S. HD7 and it only records with 60i.

Space


Antwort von motiongroup:

http://www.everydayvideo.com/eng/GZ_HD7/index_qc.php

http://www.benzmodz.com/html/jvc_workflow.htm
http://www.knowledge-download.com/JVCHD7/
http://camcorder.jvc.com/tutorials.jsp

Space


Antwort von starcat:

"motion group" wrote: http://www.everydayvideo.com/eng/GZ_HD7/index_qc.php
Thanks for the links! I have the correct file for 60i for Final Cut Pro and synonymous with the QuickTime Everio MPEG-2 component. QuickTime is the latest version. I am talking now primarily about the original. TOD file in Streamclip or QuickTime or VLC to play rückelfrei without import convert, de-inerlace or similar ...

This book is worth? http://www.knowledge-download.com/JVCHD7/

Space


Antwort von motiongroup:

JAIN ... As with any book ...

I think there is nothing in the book which offers you the network is not synonymous ..


VLC plays the files without any problems from .. VLC and the quality of representation is typical bad ..

QT on the PC can not synonymous why .. on your apple, it is mandatory ..

Streamclip eat it but I need not synonymous ..
Media Player Classic as well ..

Space


Antwort von Daigoro:

"Starcat" wrote:
Why not? I do not go to DVD and PAL 50Hz with no preference is totally me! I do not synonymous transform. All I can display 24p, 25p and 30p. What I want is "just" a liquid with 60i playback on my Mac.

Yes, I have the U.S. HD7 and it only records with 60i.


Thus
- Firstly, the first Beispielclip is converted to 25p, which explains the mysterious synonymous rhythmic jerk - as you have to come erstmal drauf that the material was recorded with 60i.
Is not directly s.der Camera. (; because of "Rolling Shutter")
- Secondly, to say that the displays the "can" not very much. The use of rare 24, 25 or 30 heart, but 50, 60, 100 now synonymous or 200 or some obscure zwischenraten as 72 - depending on - and find out what is the degree of use (sometimes not very easy, except there is very much Macland mitteilungsbeduerftiger) - ie the 50Hz with 30p can your show and everything you realize it is a slight jerk.
(; I have about my television for instance, the graphics card at 60Hz in the "monitor operation set" - runs from the box on the 50Hz - and the Buerorechner here at 75Hz!? why always synonymous .. because of the 'flicker' not sure .. I'm not set up)
- Third, 60Hz is very 'exotic' in Euroland, and if you still views the embarrassment that come on DVD burn, or use of material ner to other camera's it looking like dog of the back.
- Fourthly - Netzfrequens 50hz, that is (your tungsten, fluorescent lights flicker especially) always schoen huebsch in the camera. Always! (; and that is synonymous not a "rolling shutter" and is more likely due s.der Camera)
- Fifth, to constantly mention of "24p" seems to imply in your posts on it that you are looking to our favorite "film look". Apart from the 24p brings nothing but trouble and more work-30p and 60p looks nice, but again much 'plastic', 'liquid' and 'unfilmischer', with jerky 25p's huebsch 'kinomaessiger': D

All are no compelling reasons for 50Hz, but it's can be difficult garments to make itself synonymous. (; especially with the artificial light - who has always been a sun here ...)

Space





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