GH4 Weird splotchy image offset problem in the GH4 -Please help

[andrewmfilms]

So I filmed a video for a friend, and I noticed a weird occurrence happening on my footage. You'll see in the background of the attached video, a part of the video shifts over for a frame or two.

I shot this in VLOG, with a metabones speedbooster and the Sigma 18-35mm.

Video of problem: https://www.youtube.com/watch?v=DD76cRd-RRE

 

[Ted Ramasola]

I would assume you shot this V-log and recording internally which is not recommended.
The only way to get good and predictable v-log L footage out of the GH4 is to output 10bit and record via external recorder.

 

[andrewmfilms]

I would assume you shot this V-log and recording internally which is not recommended.
The only way to get good and predictable v-log L footage out of the GH4 is to output 10bit and record via external recorder.

I figured that just affected the color. I know shooting VLog can result in more noise and banding, but it can also manipulate footage like this? Damn.

 

[visceralpsyche]

You're seeing the effects of 8bit V-Log in action. I don't recommend V-Log for anything in 8bit.

Shoot 10bit V-Log and those artifacts will be mostly gone, if not entirely.

Also make sure you update to v1.1 of the firmware, out now, to avoid any possible ghosting bugs, as that was something fixed (not related here I think but just to be sure).

HTH

Paul

 

[video652]

The GH4 latest firmware is 2.5.

 

[Ted Ramasola]

The GH4 latest firmware is 2.5.

It's 2.6

 

[Ted Ramasola]

Also make sure you update to v1.1 of the firmware, out now, to avoid any possible ghosting bugs, as that was something fixed (not related here I think but just to be sure).

HTH

Paul

He's using GH4 Paul.

 

[estarkey7]

What ISO is the footage? It doesn't seem like macroblocking to me. Just high ISO noise.

 

[visceralpsyche]

He's using GH4 Paul.

Whoops! My bad Too used to chatting about the GH5 these days.

Yeah, for the GH4, basically V-Log is a no-go in my opinion due to the awful macroblocking issues etc, unless recorded externally at 10 bit.

Cheers,

Paul

 

[Vesku]

I think this is nothing about V-log or 8-bit. Long GOP compression can cause some jumps in background or other odd image part movement. I have some GH4 clips with odd things in part of the video image.

Is this movement in original clip?