How to make transparent bitmaps?

Mark F. wrote:

Hello,

I am creating frames for an avi image file using PS 7. I started with several gifs that where transparent, then saved them as bitmaps. Each individual bitmap has a transparent background but when the avi file is created there is a white background.

Any information on how to make avi’s with no background?
Thanks.

Can’t do
Bitmaps do not support transparency

Stephan

"Stephan" wrote in message

Mark F. wrote:

Hello,

I am creating frames for an avi image file using PS 7. I started

with

several gifs that where transparent, then saved them as bitmaps.

Each

individual bitmap has a transparent background but when the avi file

is

created there is a white background.

Any information on how to make avi’s with no background?
Thanks.

Can’t do
Bitmaps do not support transparency

Stephan

Ok. Then how do people create AVI files that have no background?

"Mark F." wrote:

"Stephan" wrote in message

Mark F. wrote:

Hello,

I am creating frames for an avi image file using PS 7. I started

with

several gifs that where transparent, then saved them as bitmaps.

Each

individual bitmap has a transparent background but when the avi file

is

created there is a white background.

Any information on how to make avi’s with no background?
Thanks.

Can’t do
Bitmaps do not support transparency

Stephan

Ok. Then how do people create AVI files that have no background?

Can you show an example? An AVI (video) file with no background puzzles me a bit.
—
steg

"Mark F." wrote in message

Hello,

I am creating frames for an avi image file using PS 7. I started with several gifs that where transparent, then saved them as bitmaps. Each individual bitmap has a transparent background but when the avi file is created there is a white background.

Any information on how to make avi’s with no background?
Thanks.

Make a PSD file and it is no problem. You can start with a new blank page, the background will look like a light gray checker board, or turn the background layer off after using layers to do your image. Then when you bring it into your video editor select the layer you desire, you can have many different layers and select each one in turn, I do this to fly text in a line at a time.

Jack

Mark F. wrote:

"Stephan" wrote in message

Mark F. wrote:

Hello,

I am creating frames for an avi image file using PS 7. I started

with

several gifs that where transparent, then saved them as bitmaps.

Each

individual bitmap has a transparent background but when the avi

file

is

created there is a white background.

Any information on how to make avi’s with no background?

Make the background black.

I am creating frames for an avi image file using PS 7. I started

with

several gifs that where transparent, then saved them as bitmaps.

Each

individual bitmap has a transparent background but when the avi

file

is

created there is a white background.

Any information on how to make avi’s with no background?

On 2nd thought, are you referring to the practice of superimposing an image on top of a movie? The editing software usually has a mask function which will make a certain color transparent.

"steggy" wrote in message

"Mark F." wrote:

"Stephan" wrote in message

Mark F. wrote:

Hello,

I am creating frames for an avi image file using PS 7. I started

with

several gifs that where transparent, then saved them as bitmaps.

Each

individual bitmap has a transparent background but when the avi

file

is

created there is a white background.

Any information on how to make avi’s with no background?
Thanks.

Can’t do
Bitmaps do not support transparency

Stephan

Ok. Then how do people create AVI files that have no background?

Can you show an example? An AVI (video) file with no background

puzzles

me a bit.
—
steg

All the Microsoft avi files (e.g., copy, delete, search) that are found in the Shell32.dll file have no backgrounds. They use the buttonFace color of the dialog box that they appear in.

My AVI file(s) will be used in a Windows application that I am writing.

"Larry Bud" wrote in message

I am creating frames for an avi image file using PS 7. I started

with

several gifs that where transparent, then saved them as bitmaps.

Each

individual bitmap has a transparent background but when the avi

file

is

created there is a white background.

Any information on how to make avi’s with no background?

On 2nd thought, are you referring to the practice of superimposing an image on top of a movie? The editing software usually has a mask function which will make a certain color transparent.

The AVIs are for software development and are displayed in a dialog box using the MS CAnimateCtrl control class like the ones Microsoft uses in Windows for copying, searching, etc. These avi files are embedded as resources in the Shell32.dll file. The CAnimateCtrl opens an avi file and displays it in the control. I have to create each frame (bmp) and of course compile into an avi. They work fine but have an ugly whitish background.

I thought about masking the background color, which is easy to do when displaying a bitmap on a button for example, but to my knowledge it can’t be done with a compiled AVI file. You can set the background of the control (CAnimateCtrl) to transparent however with no effect on the actual avi image.

I will experiment with your suggestion of the black background.

The AVIs are for software development and are displayed in a dialog

box

using the MS CAnimateCtrl control class like the ones Microsoft uses

in

Windows for copying, searching, etc. These avi files are embedded as resources in the Shell32.dll file. The CAnimateCtrl opens an avi file and displays it in the control. I have to create each frame (bmp) and

of

course compile into an avi. They work fine but have an ugly whitish background.

I thought about masking the background color, which is easy to do

when

displaying a bitmap on a button for example, but to my knowledge it can’t be done with a compiled AVI file. You can set the background of the control (CAnimateCtrl) to transparent however with no effect on

the

actual avi image.

I will experiment with your suggestion of the black background.

I don’t think you can do what you want to do. You’re in the wrong group though. Check a C++ development group.

"Larry Bud" wrote in message

The AVIs are for software development and are displayed in a dialog

box

using the MS CAnimateCtrl control class like the ones Microsoft uses

in

Windows for copying, searching, etc. These avi files are embedded as resources in the Shell32.dll file. The CAnimateCtrl opens an avi

file

and displays it in the control. I have to create each frame (bmp)

and

of

course compile into an avi. They work fine but have an ugly whitish background.

I thought about masking the background color, which is easy to do

when

displaying a bitmap on a button for example, but to my knowledge it can’t be done with a compiled AVI file. You can set the background

of

the control (CAnimateCtrl) to transparent however with no effect on

the

actual avi image.

I will experiment with your suggestion of the black background.

I don’t think you can do what you want to do. You’re in the wrong group though. Check a C++ development group.

Couldn’t get an answer there either. In case you are interested here is a test page with the avi file on it.
http://home.austin.rr.com/mchp/avitest.htm

I created all the gifs with PS having transparent backgrounds. When you save them as bitmaps the images are "flattened" (no transparency).

Thanks for the help anyway. (c: