prob. to create transparent background

[su1300]

I want to creat a model with transparent background and want to use it in corel R.A.V.E. Is it possible? I render to avi with 32 bit and found the model appears with transparent backgroud in powerpoint presentation and also in vs11+(need some trick). But in Corel RAVE it appears with a back ground. pl. help.

[Ron P.]

I don't anything about Corel R.A.V.E., however if other programs such as your powerpoint presentation does recognize the alpha channel (transparency), Corel R.A.V.E should also recognize it.

Try popping over to Corel's main website and checking out either the Newsgroups or their new Coreldraw Community.

[su1300]

my prob. is somehow managed. but a new prob. arrised. when open the renderd avi file from corel rave to vs11+, the video quality looking very poor. whereas it well played in mediaplayer, also converted a good gif through ulead gif animator. why the video looks very dall in vs?

[Ron P.]

It may have something to due with the codec/rendering engine that Corel uses in R.A.V.E., the settings you have set to render your project in R.A.V.E, or other things that I'm not familiar with.

My understanding of R.A.V.E. , it is a 'Flash authoring" application, correct? If so, then rendering a file from R.A.V.E., creates a SWF file. These are very highly compressed files. So when you place them in a video editing program such as VS, you will need to ensure you use the highest possible quality settings. You will loose quality when your VS project is rendered, because the SWF will be re-encoded.

What are your project settings in R.A.V.E. ? Are they the same as what your video project will be? For example, if you are going to use them in a PAL video project, you should be using 720 x 576 frame size, and 25fps (NTSC should be 720 x 480, 29.97 fps). Unless you intend on viewing only on your PC or distributing over the internet.

On occasion I'll use a SWF file that I've created in a flash program, in my VS projects. The program generally defaults to a much smaller frame size, since it is geared toward using for internet purposes. If I don't set the frame size and frame rate to match my video project, then the quality is poor. VS will enlarge the SWF to match the video. This is just like taking a photo that is say, 320 x 240 and increasing it's dimensions to 1024 x 728. It's going to be pixelated, having artifacts, or distorted. VS tries to recreate parts of the image that are not present.