Video with alpha channel causing frame size distortion

I have a lower-third which I built in AE. The content only occupies about 2/3 the width of the frame however I made sure I exported it at the full frame size as the rest of the video in my Premiere project. Also, I exported it as a quicktime movie with PNG settings to incl. the alpha channel.
When I import it into Premiere CS4, I drop it in on the Video 2 layer over Video 1 which is the main VT and in the preview, it all seems to be appearing as you'd expect. If I hit enter to start rendering, when it finishes I find that the lower third has been stretched the full width of the frame and additionally, Video 1 has been stretched too. I know there's an option in Preferences > General to default everything to the frame size of the sequence but having that tickbox on or off doesn't make any difference.
Does anyone have any ideas what's causing it?

Windows. Alas neither of those options worked. In the end, it was terribly convoluted but I had to export the footage from Premiere without a graphics, then import the video into After Effects and layer my comp over it - then export the final version from AE rather than Premiere. It seemed a very back-to-front way of doing things but if it works...

Similar Messages

Using video with alpha channel

I purchased a video clip from istock, the video clip is an .mov and has a alpha channel included. The video clip is santa clause over a black background and tagged at the end is a white solid of the video (I assume this is the alpha channel) How do I use the alpha channel to help key out the vidoe clip that I need. here is a link to the actual video clip I purchased. http://www.istockphoto.com/stock-video-11011749-santa-claus-with-alpha-channel-ntsc.php
Thanks Ja

As Szalam said, the b/w image can be used as a luma matte.
Also check if the actual piece of footage has an embedded alpha channel, i.e when you import it AE should know there is an alpha channel and let you know in the top of the project window when you select the element (or "interpret footage").
Alternatively just drag the footage to a comp and enable the checkerboard background to see if there is transparency. These three approaches are the same...just different ways of finding out about the alpha channel.

Replacement for FLV with alpha channel

Hello,
is there some way how to encode video with alpha channel for usage in Flash, when Adobe removed flv encoder from all applications in CC?
Thank You,
T.

I wonder too if this issue has been addressed yet in CC 2014, or are user till forced to go back to older version of ME if this functionallity is essential to them?

How can I get an AIR application to a video output via DeckLink card with alpha channel?

Hi there!
Anybody knows how to get an AIR application to a video output via DeckLink card with alpha channel?
The reason is because we want to develope tv show games with air.
Thanks.

See if these have iMac Nvidia drivers:
http://www.laptopvideo2go.com/drivers/

Saving out with Alpha channel intact to windows machine? (Motion v3)

I am working with someone who does video on his windows machine using Premier, but I use Motion to add effects to thier video.
They are sending me a wmv version of the video, which I convert into prorez to work on (keeping frame rate and video size intact) and send the video to Motion to add the effects. Once I'm done I turn off the layer with the original video and send back to FCP.
I want to save out a quicktime video from FCP with alpha channel intact so I can send the FX-only layer back to my workmate so he can drop it into his timeline on his machine and have everything align properly.
Any advice on how to do this?

If you have Compressor 4, check and see if you have the Animation codec. If you do, send the Motion project to Compressor and select the Animation codec with the setting 'Million Colors+'. The + (plus) is the transparent setting for the codec.
Open the Motion app and drop the Animation video on top of something to make sure you have the transparency.
Motion has ProRes 4444 that can contain a transparent background. Unfortunately, Windows computers do not support the ProRes codec.
BTW, a transparent background will look black (sometimes white).

FLV files exported with Alpha have extra frames after end of sequence.

Sequence is 588w x 486h Animation+ codec, talent chroma-key (Conduit) on track 2 with no background on track 1. Flash 8 is installed. When I export using the QuickTime Flash export component using On2 VP6 with Alpha Channel settings, the resulting FLV has additional frames up to around 20 seconds for a 2 minute sequence. These additional frames are a freeze of the last frame in the sequence. I tried several different sequence codecs/Spark codec with same result. Even setting an In and Out on the sequence does not help.
One symptom I have noticed, is that when I click in the timeline beyond the last frame of video, I still see the last frame of video in the Canvas (But not in the BlackMagic video card output). Normally I would see black or checkerboard.
Anybody heard of any conflicts with the Flash Export component dircect from the timeline or via a batch export.
Exporting an Item Settings QuickTime (Animation+) files and then using Flash Encoder does work, but I am trying to avoid the extra steps. (250 sequences to export)
I suspect I have an issue with the export component, but I wanted to see if anybody else has experiences this before I reinstall FCP and Flash software.

I have found what I believe the cause of the extra frames issue here, so I thought I would post it for others.
This appears to be caused by a problem between the Adobe FLV Export Component and QuickTime 7.2.  Adobe's website says that Flash encoder has issues with non 44.1 kHz audio.  Changing the sequence settings to 44.1 and rendering the audio solves the problem and FLV files exported from the timeline or via batch export are the correct length.
Exporting FLV files using either Spark or On2 VP6 with alpha, used to be a breeze with awesome results.  I do this all day to support our Flash developers.  The audio issue is easy to work around, but I also get random errors in the alpha channel of these movies now.  These single frame errors appear as black flashes.  There is nothing in the timeline that would appear to cause this.  Re-exporting sometimes fixes it, or simply moves the error somewhere else in the timeline.    This may also be related to QuickTime 7.2, but I don't know.
If anyone has experience these flashes in the alpha channel of exported FLV files please let me know how you resolved it.  This is a major productivity killer.
Thanks....

Can no longer import QT files with alpha channel

I have been using these client supplied QT with alpha channel files just fine for weeks, then all of a sudden, after a crash the other day, I was unable to open sequences with these files and exoprt them, the exporter would just freeze. the clips played in the timeline, but VERY sluggish.
On the reccomendation of a few posts around here, I removed the clips from the project, and now I cannot import them back in, I get a "the importer reported a generic error" message. I am able to open in QT pro and export to a new file that will import to PPro, but I lose the alpha channel.
As always, I'm up against a deadline and any help would be greatly appreciated.
I have installed QT 7.07, no help.
I'm on a windows 7 machine running CS master collection 5.0, Quad core AMD with 8 gig RAM.
These files worked fine just days ago!!!!
BTW, I just switched over to Premiere a few months ago and to honest I can't understand how anyone would stick with this buggy software, as a professional I've never used anything this bad before.

Welcome to the forum.
Try these. Attempt to re-import after each one:
Clean the media cache database via Edit | Preferences | Media
If step 2 doesn't work, then find all the .qtindex, .mpgindex, .cfa and .pek files associated with the media that's supposed to be in your project and delete them. Then clean the media cache database again.
Launch Pr and while it's launching, hold down the Alt + Shift keys until the Welcome screen appears. Alt resets your preferences and Shift resets the plug-in cache.
To address the other issues you say you've been having with Pr, you should start a different thread (or threads). Coming from other editors, there may be a difference in the way Pr does things that produce unexpected results that may be seen as bugs. More serious issues, such as crashes, can often be caused by 3rd-party hardware like AJA, Matrox or BlackMagic and the associated drivers. Outdated or incorrect drivers for audio and video cards can also cause problems. I recommend that you start troubleshooting those areas first.
Other issues may have workarounds. If you have serious, reproducible problems that have no workaround, then please file bug reports here:
Adobe - Feature Request/Bug Report Form
-Jeff

Smooth conversion of SWF to AVI with Alpha Channel

today i tried a program which claims the unique program in
the world can convert
SWF to AVI with alpha
channel, i find that this is the best program which can
synchronization audio and video, and there won't be watermark in
the middle of your video, i can also use it to capture pictures
when i play the swf file, it is a good function that i can put the
picture in my phone

Hi there Schumi-z!
Well, it seems many poeple have the very same problem. Let me explain what I have got and what I look for.
I am working on a simple video editor. This program is to take a video as input, read the video and "chop" it automatically. Taken certain frames to different new videos, from one to 10 or more, according to certain parameters of the frame analized.
What I have got until today is a way of opening the video, reading it frame by frame, extracting a frame, analize it. But I'm yet to develop a way to write new videos taking a group of this previously separated frames.
I would like to know, if you are trying to solve the same or similar problem which in any time it envolves writing a new video file, so we can work together and solve this problem as soon as possible.
This work is also a part of my research to complete my thesis work. It would be an honor to have a quote mentioning someone from around the world.
Well, I hope to hear from you soon.
Have a nice day

SWF doesn't play with alpha channel

I have a 500Kb FLV file that plays as a progressive download through a 12Kb SWF. This FLV was encoded using On2 VP6 codec to maintain alpha data. This is a logo animation for a website so it is essential that the video plays with alpha channel intact. Just to make sure my animation had an alpha channel, I brought it into After Effects to test with a colored background behind it and sure enough, the alpha channel was there, perfect!
Now in Dreamweaver, when I tested, the FLV plays through the SWF, as it should. However, there is a white square around my video now and the alpha channel is lost.
I even made sure to select Wmode "transparent" and double-checked my code and saw that I had the correct tag <param name="wmode" value="transparent"/>
View my site at http://www.customchromefx.com
I have played many embedded SWF's with alpha's before. I think the FLV still has the alpha, and the problem is in the SWF that plays the FLV that is giving me the white box? Is there a way around this, perhaps a transparent SWF player or something? Thank you for viewing...

Okay, so I figured out a way to make my compressed FLV video play with alpha.
I imported into Flash. Checked the box to "Embed FLV in SWF" and clicked next, and Finish. I made sure the stage area and FPS was set to the same settings as the FLV video.
In publish settings I used Flash 9,then un-checked compress movie and Published. This new SWF maintained the same file size as the FLV, while also playing with the alpha channel.
I then imported the SWF into Dreamweaver, and set Wmode to "transparent."
I now have a 45 second video (originally a 115Mb quicktime) squeezed down to a measly 500Kb SWF that also has an alpha channel. Sweet!

Flash Player for FLV files with alpha channel encoded

My goal is to play the the transparent background flash video on the bottom right hand corner similar to the video on this website : http://www.dropshipblueprint.com/
I already have the FLV file with alpha channel encoded. I was made to understand I will need a special flash player that can read alpha channel in the flv file to make the background transparent? Is this correct? If yes, then how to accomplish this or where do I get that player, maybe opensourece player? If the player is not a solution then how do I accomplish my end objective taking into consideration I have the FLV file with the alpha channel encoded. Thanks for your help. Sam

Sam,
Welcome to the forum.
Where do you need to play this "sprite" (the name for such a Flash video)?
If you need to add that to a Video, then there could be a few challenges in PrE.
If you need to add it to a Web site, then Flash Player (free from Adobe) should be able to display that.
Can you please give us just a bit more info, on how you wish to use the sprite?
Good luck,
Hunt

Question: Quick Look in Finder; problems with alpha channels

Hi
"Quick look" in Finder is great for quick presentations of a folders selected contents but it only works with images that contains no alpha channels or masks. Is there any way to work around this to display say PhotoShop documents with alpha channels? Or any plug-ins/applications that can help?
thanks.

This has been broken forever in OS X, and I don't know why, because it used to work just fine. I suspect the engineers did something to QuickTime that causes this problem, but it has been borked for so long I don't remember when the ability to correctly display files went wrong. I just remember that once upon a time all sorts of things from Apple worked correctly in displaying such files, but pretty much nothing does now. This includes the Finder, Preview, QuickLook, and various third-party image browsers that use Apple's own system level image handling abilities, such as VitaminSee or CocoaViewX. When I need to actually see what's there, I browse with Adobe's Bridge.
Francine
Francine
Schwieder

Adding logo with Alpha channel to Quicktime and exporting as .mp4

I'm adding a PNG file with alpha channel to my existing movie file using "Add to Selection and Scale".
I then have my movie with the overlayed graphic.
When I then Export as an mp4, the alpha channel is ignored!
Any help, anyone?

Yes it looks perfect in Quicktime.
But for some reason I can't save it as anything else or even export a still frame without the alpha being ignored and the image going all fuzzy.

Export PNG images with alpha channel from flash

Hi,
I have this FLA with animation and when played, the animation has alpha channel. I can’t understand why when I look in the library I see the frames without the alpha channel and also when I try to export/extract the image again the image don’t have alpha channel.
How is it that in flash this image has alpha channel and how to get it out like that into PNG?
Here is the link to download the FLA:
http://download759.mediafire.com/nb749r29220g/e0636ab0ru6ouoa/Untitled-1.fla

"when played, the animation has alpha channel"
how are you playing the animation? control/enter in Flash, Publishing to a Web page or what?
How can you tell that the animation has the alpha channel? What exactly are you seeing?
What is the aniimation? a series of images, one image moving? Are teweens imvolved?
" when I try to export/extract the image again the image don’t have alpha channel"
How are you exporting the image? is it a single image? or a series of frames that makes up an animation?
What was the file format of the original image? you brought that image into Flash and animated it? Now you want to export as a .png with transparency?
Have you ever tried to export a simple .png before so that you see and understand the dialog box that pops up during export? are you chosing "24 bit with alpha channel" in the "Colors" choice?
For those of us who may not want to download your file, please provide a more detailed describtion of everything related to this question.
Best wishes,
Adninjastrator

Import QuickTime with Alpha channel into Flash CS3

Is it possible to import a QuickTime movie with alpha channel into an FLA and have the FLA recognize the Alpha channel? When I've done this, it just shows opaque black instead of an alpha channel. I need that black to be transparent so I can see the layers below the video layer.
Thanks in advance for any help.

I don't know the answer to your question.
Do you have a video player where you can verify that the alpha channel in the video is displaying as you expect?.... that is, the background is transparent?
I have used flv files with alpha and a NetStream vid player to overlay Flash video on a Web page.... but not directly in the timeline.:
http://www.mrfilmbiz.com/
the walkon... could have had other action (like Flash artwork) going on in the background... but that may not really be what you are looking for.
But lacking any other solutions, you could have your alpha channel vid file playing in one Flash file over the top of a second Flash file doing the artwork stuff.
Adninjastrator

DNxHD (.mxf) export with alpha channel

Hello!
I'm working with one Finnish children's feature film which will star end of this year as an DIT. Movie will include lot's of green screen and the production want's me to do chroma keyed DNxHD 36 renders with alpha channel for AVID editorial. So far I have found out that neither davinci desolve nor assimilate scratch can't do it. Is it possible to render DNxHD with alpha channel from AE? And can Avid import these files with alpha channel? All help is needed and appreciated.
Cheers
Antris

Are you sure your alpha is there? (check by pressing "a" with the mouse over the view window).
Did you try telling FCP that there is an alpha channel? If you did "Send to Shake", Final Cut Pro doesn't expect that the QuickTime it's getting back will contain an alpha channel (It's meant to match your sequence settings). You might try dragging the output directly into the browser to re-import it and see if it recognizes the alpha...
As a matter of fact, maybe you can check in QT Player, load it into QuickTime Player, cmd-j, click on the video track and play with the transparency setting. Try Straight Alpha - that should lead to the background going white - then you'll know its coming out of Shake properly and concentrate on getting FCP to recognize it...
If all else fails (I did just try it here and it worked), maybe try a TIFF or TGA sequence?
post back,
Patrick

Video with alpha channel causing frame size distortion

Similar Messages

Maybe you are looking for