Premiere - Interpret Premult Alpha

Hi there quick question. I noticed that Premiere interprets Straight alpha channels properly, but Premults have the dreaded halo around it. When I right click the master file and click 'interpret footage' I don't have the option (like in AE) to interpret it as Straight or Premult. It seems like I can only disable or invert it. Is there a way to properly interpret Premult alphas in Premiere? The only fix I have found is doing a 'send to AE' in the sequence and then interpreting in there, once it links back it's totally fine, but this is probably not the best answer.
I am running CC 2014, and just to clarify Premiere reads transparency for both, it's only a matter of interpreting them correctly
Any help appreciated thanks!

Hi,
Thanks for responding and getting back to me guys
@ Fuzzy...Trust me... I didn't think it would work...it didn't make sense to me either but I misunderstood Gerry...he doesn't know that I am operating exclusively on a PC using only PC based software...I don't have a MAC.
@ Kevin...as you have garnered by now I can't use APPLE MOTION because I am on a PC. I used Sorenson Squeeze to convert the file to an Animation File. For hours I tried importing and manipulating it in Premiere AND in After Effects with No luck whatsoever. I tried everything I could think of.
It is a virtual set and I was given 2 files:
Per instructions from a video tutorial on YouTube titled: "Adobe Premiere Tutorial Set Alpha Matte" I successfully excuted the instructions but the ALPHA STILL DIDN'T WORK:
File #1) The alpha.mov file is on VIDEO LAYER 3: > I placed a Channel> Set Matte> set to "Use For Matte" > Luminance on the VIDEO LAYER 3 alpha.mov file > Take Matte From Layer> VIDEO LAYER 2
File #2) The fullHD.mov file is on VIDEO LAYER 2
Should I send you the file to take look at Kevin?
Thanks again

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Josh,
Welcome to the forum.
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Hi,
Thanks for responding and getting back to me guys
@ Fuzzy...Trust me... I didn't think it would work...it didn't make sense to me either but I misunderstood Gerry...he doesn't know that I am operating exclusively on a PC using only PC based software...I don't have a MAC.
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Should I send you the file to take look at Kevin?
Thanks again

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Hello,
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switch(codecSubType.value.intValue)
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Regards,
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O.K
It is possible to encode an alpha channel into an flv from Premiere and it works perfectly (but is limited by the quality of the Keyers in Premiere.)
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(I would like to thank me for all my help)

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Can't export alpha channel on a lower 3rd

I was able to sucessfuly change the font color of my live type.
I am intermediate to graphics and I was using the Digital Duice Editor's Took kit #10 - #239 lower third to use as a lower third while adding text in motion. I thought the alpha channel was built in. When I export in motion to .mov I get the lower third, my animated text, but a black background (no alpha to lay over the video) Slap me if this has been asked before, but I have tried a lot of things and still have the black background exported. Do I need to add the alpha overlay that comes with the lower third #239 in motion to make this a mask?
The Digital juice lower third works well in FCP and allows me to super impose it over video. Do I have to set up motion to have an alpha background before I impor the lower third?

I am intermediate to graphics and I was using the Digital Duice Editor's Took kit #10 - #239 lower third to use as a lower third while adding text in motion.< </div>
You are rendering out of Juicer 3? You have done in the past, going to FCP, and the alpha is intact? Then it must be your settings out of Juicer or you have not interpreted the alpha prperly in Motion. It might be straght or premultiplied, depending on your settings in Juicer.
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bogiesan

Trying to animate a clip's motion in Premiere 6

Hi Premiere experts,
I am a brand new Premier user with an old v6 on a Windows 7 machine.
I am trying to animate a clip's motion along a motion path... and now I figured out how to import a graphic clip in to the project window, put it in the timeline and then drag that clip to the "Effect Controls" palette, and I'm now in the "Motion settings dialog box".
But I want my graphic clip to have a transparent background so hopefully I'll be able to put it on top of another image so it will appear to be moving on that background image... I made my base graphic file a GIF with a transparent background so hopefully that would work for this purpose, but I can see when I select a background color in the "Motion settings dialog box", that my graphic clip does not take on the background color.
So I'm trying to figure out how to make my graphic so it'll have a transparent background and then put a different background image behind it.
Thanks for any help,
numetro

Hi Bill and other experts,
Below are the paragraphs in the Premiere 6 instructions that apply to my questions... I found this information about rendering the background of an image clip graphic as transparent so it will take on the color or image that is behind it, but then the information in these paragraphs does not tell me these things:
1- Where is the Alpha Channel key? - Can't find this in the instructions.
2- Where is the Transparency Settings dialog box? - Can't find this in the instructions.
3- Where is the Export Settings dialog box? - Can't find this in the instructions.
I've saved my PSD graphic file with a "straight" alpha channel that defines the area of the image that should be treated as transparency, but the questions above are the stopping points to getting these methods (described below in paragraphs copied from the instructions) to work.
Also at the bottom here there is a paragraph about previewing in the monitor window... one method works but the main method of just hitting enter is still giving me an error message.
Using the Alpha Channel Key
Images represented on video are composed of three grayscale images called channels--one red, one green, and one blue. Such images are called RGB images. An alpha channel is a fourth channel in an RGB image that defines what parts of the image are transparent or semitransparent. Many programs, such as Adobe Illustrator and Photoshop, use alpha channels so that you can specify transparent regions in an image. An alpha channel is either straightpremultiplied, depending on the program that created the image. When an image contains a straight alpha channel, the transparency information is stored only in the alpha channel. When an image contains a premultiplied alpha channel, the background color that is intended to be transparent is also blended into the edges of an image. Use the Alpha Channel key on clips that contain a straight alpha channel, such as images created in Adobe Photoshop, Adobe Illustrator, and Adobe After Effects.
When you use the Alpha Channel key with a clip to which you have applied or plan to apply motion, select the Use Clip's Alpha option in the Motion Settings dialog box. If this setting is not selected, the clip's bounding box will appear when the clip moves. See Specifying alpha channel and color options.
(Where is the Alpha Channel key? - Can't find this in the instructions)
Specifying alpha channel and color option
You can include a fill color and specify how Premiere treats the alpha channel of the clip.
In the Motion Settings dialog box, choose any of the following options:
Reset - Removes the distortion, delay, rotation, and zoom settings for a selected keyframe.
Fill Color - Specifies a background color that fills the frame behind the moving clip. To select a background color, click the desired color on the thumbnail in the Fill Color box (the pointer turns into the eyedropper tool when it is on the thumbnail), or click the color swatch above the thumbnail to access the color picker and choose a color. This color appears in previews and the rendered video program only if the clip is placed in the Video 1 track.
Alpha: Use Clip's - Superimposes a clip using its existing alpha channel. This is the normal setting for titles or graphics created in another application that supports alpha channels, such as Adobe Photoshop. This option affects only those clips that have been assigned an alpha channel key type in the Transparency Settings dialog box. For information on alpha channels, see Using the Alpha Channel key.
(Where is the Transparency Settings dialog box? - Can't find this in the instructions)
Alpha: Create New - Creates a transparent fill for clips that do not have an existing alpha channel. With this option selected, an alpha channel is created for the areas in the clip that have been assigned a key type in the Transparency Settings dialog box. See Using the Alpha Channel key.
Note: - Choosing the Create New option for an image containing an alpha channel overwrites the original alpha channel when the image is superimposed.
Choosing Export Settings
As part of the process of exporting, check the options in the Export Settings dialog box. The initial export settings are the same as the settings you specified in the Project Settings dialog box when you first started the project. Export settings don't update as you work on your project, however, so it's a good idea to make sure that all export settings are still the ones you want. Although the Export Settings dialog box is similar to the Project Settings dialog box, important differences exist. For example, the Special Processing panel is included so that you can apply certain changes to all clips in the Timeline at export time, such as resizing, cropping, and noise reduction.
(Where is the Export Settings dialog box? - Can't find this in the instructions)
Note: Some capture-card software and plug-in software provide their own dialog boxes with specific options. If the options you see are different that those described in Premiere's online Help refer to the documentation for your capture card or plug-in.
To preview motion in the Monitor window:
1 - Click OK to save and close the motion settings.
2 - Do one of the following:
Build a preview file: move the yellow work area bar so it covers the clip with the motion settings and press Enter (Windows) or Return (Mac OS).
THIS DOES NOT WORK - I GET AN ERROR MESSAGE THAT SAYS: "An error occured while making the movie. Error writing file (disk full?)." ... BUT MY DISK/HARD DRIVE IS NOT FULL - IT STILL HAS 40 GIGS OPEN ON IT.
Render-scrub the area you want to preview: hold down Alt (Windows) or Option (Mac OS); when the cursor becomes a downward pointing arrow, scrub in the Timeline window's time ruler.
THIS WORKS WHEN SCRUBBING THE AREA TO PREVIEW IN THE TIMELINE.
Thanks for any help with these questions,
numetro

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I set up my Premiere project for DV/NTSC 16:9 48 then import clips that have those properties. Premiere interprets the clips as 540x480. The clips display correctly in the free MS program MoveMaker. Why are they displaying incorrectly in Premiere?

Flash Curious
I do not have Premiere Elements 13 installed at the present time, so I did the testing with Premiere Elements 12/12.1 on Windows 7 64 bit.
I could not confirm the appearance of 540 x 480 reading anywhere for the MOD03B.MOD file.
The file before it saw Premiere Elements
Media Info Properties Readout
720 x 480 16:9
29.97 interlaced frames per second
Field Order = Upper Field First
Premiere Elements Project Assets/Properties from Thumbnail
720 x 480
29.97 interlaced frames per second
Field Order = Upper Field First
But, the Pixel Aspect Ratio = 0.9001 which is characteristic of 4:3 and not 16:9.
All of this is consistent with the old story of the mod widescreen behavior in Premiere Elements.
And, the remedy was/is
1. Open Premiere Elements to the Expert workspace and set the project preset manually to
NTSC DV Widescreen.
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Add Media/Files and Folders/Project Assets.
3. In Project Assets, right click the thumbnail for the file, select Interpret Footage. In the Interpret Footage dialog, go to Pixel Aspect Ratio section, and dot the Conform to: which you then set to D1/DV NTSC Widescreen 16:9 (1.2121).
I did not have to rename the file extension from .mod to .mpg for this to work for me with your file.
When you tried this, did you manually set the project preset or did you let the project do it for you automatically? If you have not already, please
do this with the project preset set by you not the project. To do that, before import of the file into the project.. Expert workspace
File Menu/New/Project and Change Settings
In Change Settings, set for NTSC DV Widescreen and click OK to leave Change Settings.
You will next see the new project dialog. Make sure that you have a check mark next to Force Selected Project Setting on This Project and then OK out of there.
Then import your .mod widescreen file into the project with Add Media/Files and Folders/Project Assets.....and so on.
This should work for you. If it does, we can discuss the pros and cons of the NTSC DV Widescreen project preset versus NTSC Hard Disk Flash Memory Camcorder Widescreen one (relates to your Field Order if your destination is DVD-VIDEO on DVD disc).
This is what I am getting for Properties when I right click the Project Assets thumbnail for your .mod file
This is what your .mod file looks like after I did the Pixel Aspect Ratio/Conform to: change in Interpret Footage
As I said, this was all done with Premiere Elements 12/12.1. I will see if I can get Premiere Elements 13 installed
to try this with it. The 12/12.1 and 13 results should be the same.
Please consider.
Thank you.
ATR

Replacing footage with an alpha channel

greetings gurus... I'm working in FCP 5.1 with DVCPRO HD footage 720p @23.98fps. I have an edited sequence of green screen footage that I am happy with. I then keyed out the green from the original source footage and exported that footage with an alpha channel (the background keyed out in AE7). My goal is to open my FCP project and replace the original source footage with the new keyed out footage so that my edit remains in tact but now with a keyed out background. I'm using the reconnect media function in FCP and of course the footage is replaced, but without the alpha channel.
When I import the keyed out footage directly the alpha channel is present; it just isn't present via the reconnect media method.
Any suggestions on how to pull this off?

it may be that for whatever reason FCP is not interpreting the alpha channel correctly when you use the reconnect option. for example, the reconnect option may assume that clip properties are unchanged. this may be esspecially true within the timeline, where instance properties are preserved.
you may be able to manually overcome this by adjusting the alpha channel information in the clip properties window
select one of the reconnected clips (one with the alpha channel from AE) and press cmd-9. see what setting is reported for the alpha channel. if it says None, try changing it to Straight.

Premiere - Interpret Premult Alpha

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