[Mark Whitney]

3 mins. or so should be adequate.

[Mark Whitney]

I just spoke with one of our knowledgeable folk at the WB lamp dock and they use the Kno-Flo globes in the Diva’s. Kino is literally a 1/2 mile up the street so pretty easy to get.

I know we use the Osram brand with other instruments though so not sure what to tell you.

When you checked the temp on the KF29’s, did you check shortly after turning on or did you give them a few minutes to stabilize temperature wise? That could be a factor.

[Mark Whitney]

[Steve Bentley] “Ok that footage is miles cleaner than the one you uploaded before. However it’s still pretty noisy.”

That’s what I’m seeing as well.

Matt, what ISO were you using?

[Mark Whitney]

I believe the Osram’s are what we use at Warner Bros. I can find out Monday. In any case, if there was an issue like that that, we’d have certainly heard about it. In spades.

Might you have a link to where you heard or got your information?

[Mark Whitney]

[Dave LaRonde] ”
Understand that I have Not looked at everything in this thread.”

Hey Dave,
Ya the thread got a bit long but the issue turns out to be that he WASN’T using footage straight from the camera but that somewhere in his workflow was getting re-re-recompressed files instead it seems. That’s what he’s tracking down now. Needless to say, nothing is gonna help pulling a clean matte in that case.

[Mark Whitney]

Not sure either if it’s a camera setting. But if it was just that your footage got reencoded somewhere along the line, hopefully you can simply track that down.

[Mark Whitney]

[Steve Bentley] “While you do have issues with wrinkles in the screen there has to be a cleaner record of this footage somewhere. And that would help you immensely.”

Good catch Steve. Here’s a report of this footage vs. Matt’s using the MediaInfo utility:

Matt’s “Bad Greenscreen:
General
Complete name : D:\AE CS6 Projects\From 2018\Misc Sources\12279_shortgreenscreen.mp4
Format : MPEG-4
Codec ID : M4V (M4V /mp42/isom)
File size : 3.63 MiB
Duration : 6 s 590 ms
Overall bit rate mode : Variable
Overall bit rate : 4 626 kb/s
Encoded date : UTC 2018-03-21 21:30:25
Tagged date : UTC 2018-03-21 21:30:25
TIM : 00:00:00:00
TSC : 24000
TSZ : 1001

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L4
Format settings : 2 Ref Frames
Format settings, CABAC : No
Format settings, RefFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 6 s 590 ms
Bit rate : 4 455 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.090
Stream size : 3.50 MiB (96%)
Language : English
Encoded date : UTC 2018-03-21 21:30:25
Tagged date : UTC 2018-03-21 21:30:25
Color range : Limited

Steves “Good” Greenscreen:
General
Complete name : D:\Ttemp\Toss\12287_171003d0172k.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (mp42/mp41)
File size : 87.2 MiB
Duration : 22 s 880 ms
Overall bit rate : 32.0 Mb/s
Encoded date : UTC 2018-02-08 16:16:18
Tagged date : UTC 2018-02-08 16:16:19
TIM : 00:15:18:06
TSC : 25
TSZ : 1

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.2
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, RefFrames : 2 frames
Format settings, GOP : M=4, N=25
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 22 s 880 ms
Bit rate : 32.0 Mb/s
Width : 2 048 pixels
Height : 1 080 pixels
Display aspect ratio : 1.896
Frame rate mode : Constant
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.578
Stream size : 87.2 MiB (100%)
Language : English
Encoded date : UTC 2018-02-08 16:16:18
Tagged date : UTC 2018-02-08 16:16:18
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
================================================

So ya, either his got re-encoded OR there’s something amiss with the camera settings. Note the Bits/Pixel Frame values. Just nothing there.

[Mark Whitney]

[Matt Dodds] “”If you zoom in on your footage to this level and step through it frame by frame (no key or effects) you can see the edge of the hairline boiling and little areas of distortion going on where chunks of hair literally move over 16 pixels for a few frames and then move back or sections get averaged to keep the bandwidth. This may be function of the camera or the codec, I’m not sure, but this is also going on at the edge of the hair so you are keying a moving target. It’s almost has a shower glass effect.”

Is there a way to alleviate this problem, if any?”

Quite simple: As we’ve mentioned, just get a bit better exposure on your subject (add some backlight) and more uniform process screen exposure. From the sample you posted, it uses a chroma subsampling of 4:2:0. Common, looks fine in most cases, but doesn’t leave much wiggle room when doing keying work.

To fix this shot: No quick/easy fix really. Least painful is to reshoot if possible after you get your set-up dialed in and those ARE easy fixes.

[Mark Whitney]

Probably one of the Trapcode products. I’d guess Form or Mir.

https://www.redgiant.com/blog/2017/08/01/trapcode-suite-14/

[Mark Whitney]

[Travis Landers] “Am I missing something?”

Apparently you are.

I suggest you review the basics of the Particle Replicator and Look.

https://www.videocopilot.net/docs/element2/animating_3d_objects/particle_replicator/

https://www.videocopilot.net/tutorials/3d_replicator/