Export with alpha channel

[sgraham]

I am using X4 and am familiar with chroma keying and setting backgrounds but I am trying to export the video with the alpha channel so I can create a flash file with transparency to use for walk on video (where the person appears in the foreground of the site with wmode set to transparent). I have Corel Motion 3D and some of the kbase was suggesting I needed to use that to export with the alpha channel but it would be a lot simpler to be able to push it out from X4. Even if I can do it as non-flash file I can take it to something like Ijoysoft and convert to flash. any help is greatly appreciated. - steve

[sgraham]

found this thread after posting - http://phpbb.ulead.com.tw/EN/viewtopic. ... rent+flash

sounds like still no way to output 32 bit except using quicktime. can somebody run me through steps to use CorelMotion 3D or alternative to Qtime?

[sgraham]

getting nowhere with Quicktime. anybody know if Premiere Elements will do this?

[sgraham]

had support session with Corel. It is not looking like it is possible;
. i cannot export video with 32bit alpha channel (i know how to chroma key and all that but the program misses the 8 bits of transparency so I cannot make walk on video)
[Edgar] Okay.
[Edgar] Thank you for patiently waiting.
[Edgar] I'm sorry, but Boris Graffiti cannot output 32-bit alpha channel.

[Kingston]

Edgar is mistaken about Boris Graffiti.

Within Boris Graffiti advanced settings, toggle off track visibility for the video background layer.
File > Export > Movie File
Movie Type: AVI - VFW
Compression: Full Frames (Uncompressed).
Alpha: Straight

[sgraham]

Thanks Kingston. That got me a lot closer. I have Boris 5 running in VX5 but I have only export to targa file available. No export to AVI is available.

Also, if I toggle off the background the entire AVI i brought into the timeline disappears. I cannot figure out how to export it out of VX5 as an AVI to split out the background I have chroma keyed.

[sgraham]

Hi Ken - Yes I have 5.4.0 of Boris - Steve

[Ken Berry]

Sorry, I deleted my post as you were inserting your last msg... I had done so because I read your first msg above again, and saw you were talking about X4 which uses Boris 5.3. So I wanted to open X4 and check there. But it too offers export to Targa, Movie (including AVI - VFW) and Flash, as does Boris 5.4 in X5. So I am puzzled why you cannot see these latter two export possibilities.

[sgraham]

me too. I'm at a dead end. not sure what to do. tried reinstalling but still not export option other than targa.

[sgraham]

Installed to another workstation (also Windows 7). Installed VX5 Ultimate and Boris 5.4. Also no output menu pick for movie, only Targa.

[Ken Berry]

If you haven't already, you might want to look at this thread -- particularly towards the end -- to see if it gives you any more ideas... http://forum.corel.com/EN/viewtopic.php ... 80#p249380

[sgraham]

Ken - are you saying that my output file is defeating having a menu pick from Boris to export as a movie? that does not make any sense to me - STeve

[Ken Berry]

No -- I was wanting to suggest there might be an alternative to using Boris...

[sgraham]

unless you have better suggestion, after starting with version 6 in 2005 I have to go to premiere pro.

[Kingston]

You do need a pointy head to use Boris Graffiti.