CS5.5 Channel Mixer Effect

The channel mixer in CS5.5 now has presets like "Ambisonic B format to L R Ls Rs" and "Matrixed Stereo to ITU 5.1." The implication is that AA can turn certain 2-channel files into 5.1 files. Is this correct? I can't figure out how to make this work, and the online manual has nothing about this.
J. D.

This is fun, but not as much fun as you'd like it to be. Let me explain.
There is one caviat we all need to pay attention to: these advanced functions in the Channel Mixer effect are PASSIVE mixing only, and therefore won't correctly decode a matrixed-quad source such as SQ, QS, or Dolby Surround. I have no idea what that means for Ambisonics. But there are some interesting applications for this, to be sure.
Now, having said that, here's what I discovered.
If your source file is stereo, then first you must convert it to 5.1 (or whatever is suitable) using Edit > Convert Sample Type. Pay close attention to the optional dropdowns.
Now you should have a file with two front channels with audio and 4 silent channels. Then select all, open the Channel Mixer, and proceed. The end result should be what you're looking for (unless you need phase-based decoding, which is better done via scripting in AA3).

Similar Messages

Custom 'channel mixer' preset?

I'm editing a lot of underwatervideo's in premiere 10. The autocolour effect gives me a lot of colour-flickering, and I have to adjust colour manually with the Channel Mixer effect.
The optimal settings is just about the same in each clip, but I have to set it up from scratch each time.
Is there a way to edit this effect so that it would start with the correct settings?

Welcome to the forum.
Steve's suggestion is a great workflow. It will allow one to make all adjustments to one Clip, and then transfer ALL of those Effects and adjustments to all other Clips, requiring those adjustments. Note: you can then go into each Clip and fine-tune the adjustments, should they require special treatment. Note: if the Clip, from which one has done the Copy, has other Effects, that will NOT be required on the remaining Clips, one must manually Delete those, after Paste Attributes. For that reason, I recommend doing the adjustment and application of any/all Effects that will be common, then doing the Copy/Paste Attributes first, and then going in and adding any additional Effects, that are Clip-specific.
The Auto Effects, such as Color/Colour, will often cause "strobing," if the lighting and exposure are not 100% constant throughout the Clip - any changes, and one will likely get some strobing, which may, or may not be noticed. I shy away from those Auto Effects, as much as I can.
Good luck,
Hunt

CS5: Magic Wand fails intermittently; cannot use Channel Mixer on selection

Hello,
Using CS5 / Photoshop on Mac OS 10.6.4. 4GB RAM.
The Magic Wand tool fails intermittently. Quitting PS and rebooting seems to re-enable use of the Magic Wand.
However, even when the Magic Wand tool does "work", for some reason I can no longer use any of the items in Image -> Adjustments, such as the Channel Mixer. This functionality was working just 20 minutes ago, and now even with multiple reboots I cannot seem to get it working again.
Googling came up with no relevant articles on this errant behavior.
Any help is greatly appreciated.

Could you post a screenshot?

Compositing - Channel Mixer Help

I've been using AE now for a few years, (since v5.5) and mostly use it for motion graphics. Using CS3 now. But right now, I'm beginning to work through Steve Wright's book, <a href="http://www.amazon.com/Digital-Compositing-Film-Video-Second/dp/024080760X">Digital Compositing for Film and Video</a> to focus more on true compositing.
The author's aim is to keep the lessons application-independent and present concepts in a way that would be applicable to most software packages. (However, considering the author's frequent references to "nodes" and his well-known status as a Shake user & <a href="http://movielibrary.lynda.com/html/modPage.asp?ID=408">Shake instructor</a>, it's apparent that using Shake, while reading this book, would lead to the least bumps in the road, when attempting to follow along.)
But I'm not using Shake, I'm using AE and have encountered a small bump in the road. Regarding luma keys he mentions how luma values are represented in the individual colors R,G,B. To cut to the chase, he says, "One standard equation that mixes the right proportions of RGB values to create a luminance image on a color monitor is:
Luminance = 0.30R + 0.59G + 0.11B"
Great. But I can't figure exactly how to mix the RGB values with the above proportions in AE. It's quite easy & straight-forward in Photoshop, using the Channel Mixer. <a href="http://www.geocities.com/kevincbrock/channel_mixer.png">Example here</a>. But AE's Channel Mixer does not seem to work quite the same way as it's counterpart in PS. There are values there, for instance, "Red-Red", but they seem to run in values from -200 to 200, not percentages, like PS. So my question is, how do I achieve the same channel mixing results in AE that I can in PS?
I'll add this: I was able to achieve the desired result in AE, but by using a round-a-bout sort of tactic. Instead of using the "Channel Mixer", I applied the "Set Channels" effect to my sample shot. By changing the "Set Red to Source 1's LUMINANCE", then doing the same for Green and Blue, setting them all to LUMINANCE, the resulting image is identical to the sample shot that was tweaked in Photoshop. Again, it worked, but I'd like to know how to change the proportions of RGB to other values than those represented in the formula above.
Hope this all makes sense.
Oh, and while I'm here.....I'll throw this in: In AE, when you apply the "Curves" effect, can you input precise values for input / output. Again, this is simple in Photoshop, but unless I don't have some display items turned on in the Curves editor in AE, I don't see a way to enter precise values. Is this possible?
Thanks in advance for any input.
EDIT: for some reason, the links I've posted aren't showing up properly. So if your'e interested in following any of them you'll have to copy/paste on your own. Don't know why......

>Great. But I can't figure exactly how to mix the RGB values with the
>above proportions in AE.
You could use expressions... You create sliders for each input, then feed their output to the actual effects. Something like
//----begin expression
linear(value,0,100,-200,200)
//----end expression
should do in most cases. Still, be careful. Not everything written in that book directly applies to AE. It does not figure in any specifics of color management nor different Gammas which could massively skew results because the source footage will already be pre-adjusted and the comp will add another level of adjustments.
>Oh, and while I'm here.....I'll throw this in: In AE, when you apply >the "Curves" effect, can you input precise values for input / output.
Nope. AE's Curve effect will adapt to the project bit depth as a lot of other effects, presenting you with the problem of which values to actually use. This would only make sense if the effect itself would be independent from AE and process in float all the time and only the inputs were presented as different normalized ranges. There was/ should have been an alternative Curves effect from Frischluft, but at this point development has reached a dead stop, so it's doubtful it will ever be unleashed upon the world.
>Don't know why......
HTML-Code functionality had to be disabled thanks to spammers. :-|
Mylenium

How to become Channel Mixer

Hi everybody
I Have Photoshop Elements 5 and I would like to upgrade it to a later version. Now I need to know if PSE 8 would have Channelmixer, which I need for my work. If not, can I upgrade to a Adobe Version with Channel Mixer ? And how can I do this ?
Thank you for some advice !
Hanny

Can you point me to where the $299 upgrade to CS5 from PSE8 offer is located? When I
go to the Adobe store and specify an upgrade from PSE8 to CS5, the price is $599. $199 for CSx to CS5,
but that does not help me. Did this promotion end, or am I missing something? Do you happen to know how long the offer will be on the table?

How to add Channel mixer?

Dear Photoshop Elements Users
I am new to this and for my photography assignment it says I need to edit image using Channel mixer which elements 13 doesn't have.
I am bewildered....
Im trying to work out how and what I need to download (found info that there is free download CS5?) but can't work out where the actual button is to say download now!
can anyone help me?
thanks
Frustrated Fran

Your best bet is to purchase Elements + for $12. It is version specific and has Channel mixer.and a lot more.
About Elements+

Transpose PS Channel mixer values to LR

I use presets of channel mixer for converting images to gray. The presets I have are based on RGB Values. How can I transpose that to the 8 channels on LR ?
In addition to transposing from 3 to 8 channels, I see that moving 3 channels to 0% make a black photo. When all sliders on LR are moved to -100%, the gray shades of original photo are not modified.
thank you for your help.

You should try it and see the effect I am describing for yourself. Noise reduction is not helpful. When channel mixing is done correctly there is no need for noise reduction. The high-res sliders in Lightroom and ACR, though, do not do channel mixing. They operate on specific hues and can't be used as an equivalent to channel mixing no matter how you move them around.

Add Channel Mixer functionality to LR

Something I often do is shoot IR with my Sigma SD-14 by removing the hot mirror/"dust cover." The resulting images are pink-magenta-yellow.
Doing a monochrome conversion in LR really doesn't work, whether auto or something else. Grainy, noisy, looks like crap.
What works great is using the PS channel mixer with the "red filter" preset. PERFECT and OUTSTANDING dynamic range, optimally low grain.
Because the high-precision color sliders in LR don't work like anything at all like the channel mixer, it's not possible to get the equivalent out of LR. You can't just drop out blue and green by sliding them all the way to the left - you get noisy mush.
I would love, love, love to have the channel mixer.

You should try it and see the effect I am describing for yourself. Noise reduction is not helpful. When channel mixing is done correctly there is no need for noise reduction. The high-res sliders in Lightroom and ACR, though, do not do channel mixing. They operate on specific hues and can't be used as an equivalent to channel mixing no matter how you move them around.

Four channel mix for P2 format?

I'm in the final stages of editing an EPK for an upcoming indie film, but I'm having some problems getting the audio output the way it's supposed to be delivered. The distributor wants the EPK on a master tape with a four channel mix. The problem is getting it to render it out that way.
We shot the EPK on P2 cards (720p), although the finished cut, while predominantly made up of P2 footage, also contains quite a number of production stills, SD footage and clips from the finished film sourced from the final Quicktime render file. Now the producer suddenly decides he wants me to export it as an MXF and put it on a P2 card, which he can then take to his people and have dubbed to HDCAM.
But, even after reading the CS4 manual, which seems to indicate that you can export back to P2 in four channels, I can't get it to work right.
I thought it was because I hadn't set up my sequence timeline for 5.1, so I created a new timeline as a 5.1 output. Then I had trouble porting the clips over to that because of memory issues (big project), so what I decided to do was export the project timeline twice as an MXF sequence. The first time I muted the tracks which had the music and effects on them and exported just the main program. Then I muted the main program audio and unmuted the music and effects and exported again. Then I opened a new project with a sequence that was set up for 5.1. I laid down both exports on the time line, the two video tracks right on top of each other. Then I used Source Channel mappings to route the main program to channels one and two, and the music and effects to channels three and four. I played it on the timeline and saw four channels light up with the mix.
So thinking I had solved the problem, I exported it again as a MXF and examined the output - only to find that the new sequence was only two channels, and only the main program audio. The music and effects were nowhere to be found.
Anybody know how to get this to work? Thanks!

Unfortunately, unless a software CD-4 demodulator exists that can process "modulated" recordings (it might...), you'll need 4-channel hardware capture capability. This is pretty common for musicians and you might find solutions in the music equipment section of Best Buy.
In terms of software - Audacity is amazing and VERY powerful. One thing you might be able to do with Audacity is something like:
Record player -> CD-4 decoder -> 4-channel audio capture card/interface -> 4-track WAV file
then
4-track WAV file -> 4.0 or 5.1 channel AC3 (Dolby Digital) audio -> Dolby Digital capable surround receiver
The latter is actually what I do with recordings from my Zoom H2 - however this has 4-channel mic recording but not 4-channel line-in recording.
It looks like, in order to do software CD-4 demodulation, your recording solution will have to have a VERY high samplerate and a much higher cutoff for its lowpass filter than typical for audio - there are likely to be few off-the-shelf solutions for recording the "un-demodulated" CD-4 inputs. http://en.wikipedia.org/wiki/Quadraphonic_sound#CD-4_.28Compatible_Discrete_4.29_.2F_Quadradisc - In short, I don't think recording to PC and then demodulating is going to be practical.
*disclaimer* I am not now, nor have I ever been, an employee of Best Buy, Geek Squad, nor of any of their affiliate, parent, or subsidiary companies.

Premiere Pro CS5 and After Effects CS5

Hi I'm fairly inexperienced when it comes to Adobe products. I was wondering whether Premiere Pro CS5 and After Effects CS5 can be used together, for instance Premiere Pro to do the basic editing and After Effects to do some more advanced stuff before importing the clip back into Premiere Pro for exporting the film.

Yeah.

What is the easiest ways to create motion menus in Encore CS5 w/ After Effects CS5

Hello,
What is the easiest way to create motion Menus in Encore CS5? I'm creating a motion menu in after effects CS5 and will import as a menu in Encore, but I want to keep the animation, while the buttons will navigate you to the appropriate timelines. I want to keep the animation going throughout the duration of the menu?
Thanks,

Thanks Stan. Big Help
Date: Fri, 10 Jun 2011 20:07:23 -0600
From: [email protected]
To: [email protected]
Subject: What is the easiest ways to create motion menus in Encore CS5 w/ After Effects CS5
The first link is Encore CS5 help. It is a good beginning. I'm not sure if the tutorial it links to is the same as my second link. The AE help link below is also useful.
CS5 allows creation of buttons in AE, but for plain navigation options, I think it is just as easy to add in Encore or Photoshop.
http://help.adobe.com/en_US/encore/cs/using/WSA5513911-0AD1-440c-BDAD-2E0E806B425E.html
Here's an adobe tutorial on using AE for EN menus:
http://www.adobe.com/designcenter/video_workshop/?id=vid0258
From the After Effects help:
http://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-7e45 a.html
>

CS6 channel mixer misbehaving!

Can someone help with my problem please? I export a photo to CS6 and use channel mixer to swap the red and blue channel values i.e red from 100 to 0 and blue from 0 to 100
which should give me a blue background for infrared photos then for further PP but it is giving me a green background instead and nothing has changed it has just decided it wants to act strangely
I do have malware on my macbook pro retina so Im wondering if this has something to do with it? Would be great full if someone has any clues?

With the channel mixer to swap the Red and Green channels:
1. Select Red for the Output Channel
Change the Red to Zero (0) and the Blue to 100
2. Select Blue for the Output Channel
Change the Red to 100 and the Blue to Zero(0)
You could also save the settings as a preset so you don't have to adjust the sliders everytime

Curves or Channel Mixer - which is better?

Which do you think is better for colour correcting/adjustment (especially CMYK images)

When you add up the ink percentages of your four ink colors - Cyan+Magenta+Yellow+Black, you'll get your total ink density, which is what I'm sure Alan is referring to. Set one side of your Info Palette to read Total Ink, and then you'll easily be able to monitor that. If you have too much ink density, magazines are very likely to kick your file back, asking you to fix it, making you miss your deadline. If you have too little ink density, your blacks may look weak.
Alan is correct, Curves, Hue/Saturation, and Selective Colors are the first choice tools for CMYK color correction and Channel Mixer is usually for making huge fixes which will usually require Curves to bring back into line anyway.

How to find channel mixer?

could someone tell/show me where to find the channel mixer?
Thanks

There is no channel mixer in PSE, but it's available in many of the additional tool sets, like Grant's tools:
http://www.elementsvillage.com/forums/showthread.php?t=51319

Missing facility: graphic channel mixer

Hi Guys,
I miss a graphic channel mixer so that I can reduce channel separation in
problem zones, primarily the bass range when handling vinyl and shellack,
but there may also be benefits for similar processing in the treble range.
Kind regards
Peter Larsen

In the arrange window, check to make sure the check-boxes have been checked to display sends,pan etc etc etc.
I'm not infront of logic right now so I cant be more specific.
AD2

CS5.5 Channel Mixer Effect

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