Linear Compositing Mode

I am learning to love the look of how linear color compositing mode combines my content. While I'm loving the results, I'm one of those people who likes to know why I get a certain result.
It seems that there is a difference between compositing over a black solid or black video versus compositing over nothing. I find that cross and film dissolves to an empty portion of timline has different results than dissolving to a black layer. There are lots of great results that I get from using the sequence setting "Composite in Linear Color."
Could someone explain how transparency and various compositing methods works in linear color mode that makes it different from the flat look I acheived FCP and when using non linear mode? Does anyone know of a whitepaper explaining the theory and math to help me understand what I'm seeing in the linear color world?

I've not seen any technical explanations put forth by Adobe on this, other than the following:
"...processing is done in a linear color space (i.e., gamma = 1.0) at 32 bits per channel (bpc), which results in more realistic results, finer gradations in color, and better results for midtones."

Similar Messages

Composite mode (control click or right click) and how and when to use

Hello,
I would like to learn how and when to utilize the composite mode (control click or right click on your timeline)and all of its functions. Do you have a recommendation as to who might be able to explain what each of the composite mode functions do? Editors keep referring to how great this feature in FCP is.
Thanks,
Jordan

Have a read through the manual first. It explains what Composite Mode does and the theoretical underpinnings. Book III- Chapter 18- Page 361 (in FCP 5.1) is a good place to start.
If you have questions, come back.
Have fun.
x

Anybody can explain composite modes in detail please?

looking around the web i cannont find any where that explains composite modes in detail!
any links please to some good web sites that explain a little about each one and how they are used please?
i understand screen, overlay, multiply etc but i would love to have a reference for each one of them!
many thanks for any info!

yep!!! sorry overlooked this again!!
thanks for the info though!!

Composite mode transition

Hi,
When I use a transition (edge wipe in this case) between two clips with a different composite mode, something strange happens. I thought that the transition will mix the composite modes but it looks like it adds the composite modes.
Is there any change of solving this problem or do I have to find a workaround?
Martijn.
PowerMac G5 DUAL 2.0 Mac OS X (10.4.4) FCP 4.5

Can i edit my posts in this forum?
I looked again at the transition and I found that the transition only uses the composite mode of the first clip.
Martijn.

Composite Mode with X?

Hello,
the FCPX allow the Composite Mode function (like the FCP7 under Modify menu), to apply for example over two clip one on top of the other in the timeline (more or less like layers)?
If not ;-( is there any similar function or the same function with another name?
Thank you.

I´m not yet a FCPX user so I can only imagine what you´re explaining, but tell me if it´s this:
1.Two clips, one on top of the other, with the cursor line over them too.
2. One click on the "i" icon, with the clip on the top selected and we´ve access to the Composite Modes list?
3. Choose from that list and apply a Composite Mode over both clips (the first over the other in the vertical alignment) like a "subtract" or a "multiply" mode?

Affecting Parameters in Composite mode

I'm a new FC user so excuse my ignorance. I'm trying to affect the parameters of a video composite. With Avid I was able to affect each video layer and key frame between foreground and background, but in composite mode I can't seem to affect any of the parameters as you can with other video filters. Is there a type of "blending" filter that would work better?

Not sure what you're trying to accomplish, but try double clicking one of the video layers and making adjustments in the Viewer.
for instance if I was composting two identical video clips and using Composite Mode Add then I might launch my top video layer and adjust the Opacity in the Motion Tab

I have an Iphone 4.3.3 and do not have the face time application help. I read that it is supposed to be there. I try clicking on contacts that do have face time but i end up getting the email composition mode help.

I solved my problem myself thanks everyone

thanks huntress you should pick another waiting room for God one where there is less rain and snow. But on the other hand maybe God does not like this waiting room so he regularly skips it!!!! Thanks a lot for your reply.
After I posed the question I ended up solving the issue and sent a message to disregard but I appreciate your prompt reaction it is great.
I solved it by going to settings phone facetime on but had to turn off cellular data as well. Now I turned cel data back on and the feature still shows so that is great.
The second option does not seem to work for me because facetime does not light up on the keypad so I cannot activate it. I will try again or Do you know what i need to do there?
thanks so much for your help for the info and the website

Export Media halts when it reaches still image

Exporting my timline is halted when it reaches a small jpeg. When I try to cancel the export, Premiere must be forced to quit, then crashes and displays the "Adobe has encountered a serious problem" window. Adding a video element below the small image allows the export to proceed past the problem image. This happens so frequently that I've had to create a black video file just for this purpose. Is this a bug that Adobe is addressing?
MacPro 5,1 running 10.8.4
CC (up to date)
Nvidia K5000 (exporting using Mercury Engine software only)
Timeline rendered using Linear color (required for desired look)
1920x1080, 23.976, ProRes

Still having problems exporting
I'm trying to export using my ProRes preview renders. Whenever there is partial transparency on a film dissolve to nothing the export halts, the progress bar stops.
Same problem when I have a letter boxing matte image file over nothing, the export halts, progress bar stops.
When ever there is an image file (any image file, small or large, filling s reen or partial) the export halts.
I'm in linear composite mode with an Nvidia k5000. 1920 x 1080 x 23.976.
Staff members please help and respond to my bug report, please.

Problem with Linear Dodge blending mode

I cannot get the Linear Dodge blending mode to work correctly on a separate layer. I made a new layer and set the blending mode to 'Linear Dodge,' but when I draw on it, it simply acts like it is set to 'Normal'. There is a distinct difference between when I draw on the separate layer and when I draw on the layer it is supposed to be affecting using a brush set to Linear Dodge mode.
Here is an image to illustrate my problem:
http://img112.imageshack.us/img112/4592/lineardodgeus7.png
The left streak is drawn on the 'highlights' layer, which is a blank layer set to Linear Dodge blending mode and clipped to 'color.' The right streak is drawn on the 'color' layer (which has the purple coloring on it) with a brush set to Linear Dodge mode.
What am I missing here? I'm trying to get the Linear Dodge to look the same whether or not it's drawn on a different layer.

To get your Linear Dodge layer to behave the same way as your brush set to Linear Dodge try this ... activate your "highlights' layer. Go to Edit/Fill. For contents choose black, for blending choose "behind"
Its only when dodge interacts with black that the burned haloing that you are looking for starts to happen.(this includes color dodge and Linear dodge) - I don't know why this is but it has something to to with the blend mode math.

Re: Can't get S-Video to Composite on my Satellite A200-1AE

I am trying to connect my laptop with my TV using an S-Video to Composite cable and i get no colour on my TV.
Only black and white. I am trying to find a setting in Nvidia Control Panel to switch from S-Video mode to Composite mode but i get only S-Video and Auto-detect.
Does anyone know something about it?

The port you used on TV. If I connect cable from laptop to S-Video port on TV then I enable S-Video port on my TV.
I have also tested notebook connection to TV using SCART adaptor and used channel on TV reserved for SCART port. The picture was there with colour.
I don't know which TV do you have but on my work everything Ok.
By the way: I have Satellite P200 and I have tested it with S=Video and HDMI. No problems at all.

Multi-layered compositions creating overly large compressed files

Hi there community!
FCP HD 4.5
I have a composition that involves 3 layers of video and 4 audio tracks. It is only short but when trying to compress a sample for the web I'm having difficulty getting the file size down to something reasonable, like between 3 - 5 MB as with my other clips. I've tried exporting the project in uncompressed format and then trying to compress from that single track file, but FCP treats it just the same as the original. The original has a few effects applied and I also modified the composition mode, so it is somewhat complex. I've been trying to compress to quicktime movie using the following:
video:
H.246
size 400 x 300
quality: medium
frame rate: 15 fps
encode: multi-pass - best
audio:
mpeg-4
Resulting file size is 17 MB for a 1 minute clip. Way too high.
These settings are ideal for my other stuff, but this clip is more complex. I'm a professional preparing video content for the web. What is the nack for squashing a complex project without losing too much quality?

You should be using Compressor (moreover, you should upgrade 4.5 to 5.1 before the offer runs out).
Prior to Compressor 2 (and if I want QT 6 compatible quicktimes), I use Sorenson Squeeze. At high quality, I generally get 640x480 resolution at 4MB for 30 seconds. Or I use Compressor and H.264 LAN.
Both do a far superior job to straight export from FCP.
Patrick

Alpha channel modes

Hi
A compositor has done some green screen keying for me - great job but he's given me the key as a seperate alpha channel (TIF as an image sequence) I'm a bit unfamiliar with how to use alpha channels in this way.
I have layer one as my background,
layer 2 as my subject that he has worked on the green screen of
layer 3 as a seperate alpha channel to key out the green. The Subject I want to see is white and the surroundings I want transparent are black.
So please tell me what settings to use to see the subject and the background.
I am assuming i only want to change settings on the alpha layer. By changing the compositing mode to overlay, i can see the subject fine, but the background is black. I have tried changing the alpha mode (ignore, straight, black or white) and various combinations of compositing mode and alpha but without getting any further....
So any help would be greatly appreciated, its the end of a long project and I'm starting to tear out my hair!
cheers

Export using QuickTime conversion using animation codec, millions of colours+
Try this:
http://discussions.apple.com/thread.jspa?messageID=4791917&#4791917
A search using Alpha channels produced this:
http://discussions.apple.com/search.jspa?threadID=&q=alpha+channels&objID=c206&d ateRange=last90days&userID=&numResults=15&rankBy=10001
Search is thy friend, si thi

Special FX composite won't render

Bought a book called "50 Fast Final Cut Pro 3 Techniques" that included a CD-R with clips you could use for special effects.
One of them is a foreground flame clip and its accompanying mask. Near as I can figure, these clips are QuickTime 720x480 .mov at 29.97 fps.
I follow the instructions in the book. Put the mask clip in V2, put the foreground FX (flame) in V3. With V3 selected, choose Modify -> composite Mode -> Travel Matte -> Luma.
Next, I select V3 and V2, choose Sequence -> Nest Items and name the nested clip.
Next I'm told to Render All, but when I try to do that I get a prompt window that says "codec not found. You may be using a compression type without the corresponding hardware card."
Weird thing is, I don't have a video card. Just the stock card that came with the G4 that I use the firewire port.
Last weird thing, the FX clips work in the chapter exercise at 340x240, but not when I use them in my own footage at 720x480.
Any ideas? Many thanks.
Joe

any photos in your sequence?
#14 Codec not Found
Shane's Stock Answer #14:
If you get a CODEC NOT FOUND missing hardware check ALL your images in Photoshop and make sure there are in a RGB color space NOT CYMK, LAB, OR GREYSCALE
For all the stock answers, click on this link:
Shane Ross, "Stock Answers", 03:58pm Jan 13, 2005

Final Cut Problem - Duplicate frames when using add composite

I have a problem with Final cut hopefully someone will be able to help.
Clip A & Clip B on one layer and Clip C on another, being used as a transition between the two. Composite mode 'Add' being used on Clip C
When Clip C overlaps both clips in the timeline it causes duplicate frames in Clip B during the 'transition'. If I move it to just overlap Clip A the duplicate frames disappear.
Any thoughts appreciated
Thanks
Message was edited by: prayforsnow
Message was edited by: prayforsnow

Hi -
No apologies necessary! I think it may be some of the terms you are using that are throwing me off. A couple more questions:
prayforsnow wrote:
I exported my movie as a mov (HDV 720p) from imovie and imported into final cut.
I then split the clip with the razor tool into the edits I had previously made in imovie with the intention of adding my compositing clip as a transition between these clips.
OK, I follow that up to "adding my compositing clip as a transition between clips". The compositing clip is the film burn effect that you have built as a separate clip?
I needed to split the clips so that I could move them around the timeline and align them with the composition clip I had. If i don't the composition clip will play for too long over the other clips.
Meaning you needed to adjust your edits so that the film burn will fit correctly as a transition over the scenes below, not masking too much of the scene?
The screenshot I have provided does not show them apart. It just shows the clip split ready to be moved.
OK
Upon adding my composition clip, frames from the end of the first clip are added to the start of the second creating a 'one cycle loop' regardless of whether these clips are joined (as shown in my screen shot) or moved apart.
Meaning if you separate the two clips, so that there is an actual gap between them, you still see frames from the first clip where there is only gap on the track below?
If i move the composition clip so that it only overlaps one of the clips ( so not really a transition anymore) the extra frames disappear. Move it back and they appear
Meaning if you place the film burn composite over a clip without a transition, it works as expected?
My only question is if, when you adjust the clips by separating them to get your desired spacing, is there really a gap between the first and second clip, or do you drag the end of the first clip to fill in the space created by the gap? That would cause the frames at the beginning of clip 2 to be repeated as they are being shown on the end of the previous (now extended) clip.
Thanks
MtD

Explain "Single Disk Mode" + Adding new disk?

***I have already read all other potentially relevent posts on this site** (at least I believe I have)
I have an existing NMH300 with a single WD 1TB drive installed and configured for Linear1 RAID.
My apologies for asking a question that may be an easy answer, but after searching on the message boards and reviewing all the user guide material I still have a few basic questions.
Is it possible to operate in "single disk mode" with two drives installed? Seems like a dumb question based on the obviousness of "single disk mode," but it wasn't clear to me. I'd like to avoid Linear2 RAID b/c I don't want a single drive failure to ruin all the data in both drives and I want the capacity so I don't want RAID1.
I believe I understand that if I revert to single disk mode from linear1 then all data is erased. Correct?
Would it really just be easier to add the 2nd disk and have it run in linear2 and avoid all the hassle of a migration and re-build?
One last question. If I add the 2nd disk and configure it in linear2, the NMH is supposed to keep my existing data on the existing drive and just "add" the capacity. Correct? (I know I should back it up first, but just asking to make 100% I understand the specific details)
Thanks.
/ctizzle
Solved!
Go to Solution.

Hi ctizzle,
So that all these modes will not confuse you I suggest checking out this link. Since I've got my videos and music backed up on another drive and I use my nmh primarily as a media server I set mine up as linear2. If you decide to increase your total disc space by adding another hard drive and set up the nmh on linear 2 mode as well then I suggest you take a look at this guide.
By the way, choose your hard drives from the hardware tested list.
Hope this helps!

Linear Compositing Mode

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