Why not?

http://mediasoftware.sonypictures.com/forums/ShowMessage.asp?ForumID=4&MessageID=326631

G ?

Sorry now you've really lost me. There the discussion is about rendering a clip out with an alpha channel. Something has to create the alpha channel, you can cut a bit out of the frames or use something that creates a mask (keys etc) but if your source has no alpha to start with then it will not have any until you creat it somehow.
Black isn't transparent. Transparent parts of a frame APPEAR black in Vegas as they let the underlying blackness thru. That's why when I'm working with alpha data I lay down a track of red or blue underneath so I can clealry see what's going on.
Bob.

Hi Grazie, you may want to edit the subject of your post to Transparent.

Trannie means something different here in the US.

I guess a compressed trannie is one wearing a corset? :)

Right!

So I can't select Black as the Background and expect for that to become Transparent, evemn with rendering an Uncompressed AVI - right! The Alpha Channel would have HAD to have been created prior to this!

Shame ...

G

It's pretty easy to make it transparent though, either a color or luminance key will do the trick.
Bob.

Pray tell! I'm all ears! Up to now I've used CK - G

Grazie

Colour and chroma are the same. I don't remember seeing a Luma Key in Vegas, I'm at work so do not have Vegas in front of me to check.

Martin
ps Nice to see you last week.

I think you can use Min - Max to create a luminance key in Vegas. Probably will only give you the same results as CK anyway. Main use for luminance keys is sometimes you get a better key shooting against a white or black background when using DV, really depends on the subject.

I say old man, did you get the VIDEO via email for pub identity?
email from mrjhands...

signed,
well...mrjhands

Grazie

Me thinks they are extracting the Michael...

We both know that an Uncompressed Trannie is a long wheelbase commercial vehicle made by Ford!

But back to your problem, can you not just set a black chroma key.

Alan

Martin - Yes good to seeyah too!

MJ - Sorry! Got it . .really don't recog it at all! You had a good time - eh?

Alan - This I can deal with! CK-ing is THE option, but my heaad was turned by Uncompressed - and Liam's explanation. I've got 100 authors that in an Clip and I want to manipulate the event in many and varied ways. CK-ing will be AT the time. Having an uncompressed AVI means i can do all sorts of other stuff WITH and ON and against the other tracks. yeah?

I've got a rolling RIGHT to LEFT stream of authors names, and I want to have the backgound transparent. Might to create it from the TEXT Gennie I put them al into.

G

Liam???

Have you been taking your medication Grazie?

Grazie

How did that "Black" background get created?

Did YOU put the black there ... or is it black there because there is no other video or image "in the way"?

I got this stuff to work by doing exactly what I said in my previous post (I am not on drugs.. or seeing things... I really did manage to create videos with alpha channel from Vegas and load those back in and use them just great).

The critical part of the picture is that if you can be sure your original video segment is indeed transparent then when you render to uncompressed with alpha you will be all set. With the video you created - in the original Veg that you created it in (the one you are trying to render as uncompressed) can you load a video track on the bottom of the timeline and SEE this beneath your other video? If you can... then rendering as uncompressed with alpha should work. If you don't see that video then your project is NOT actually transparent.

The BLACK thing is a little bit of a red-herring. This alpha thing is not about rendering black parts of the video as transparent. Black is merely the color that Vegas shows when there are transparent parts of the video.

I don;t think I am describing this all that well. Can someone else have a go?

Bob,

lol. something like that. I'll never forget once after leaving a bar very late one night seeing about five of them waiting for the uptown bus.

Must have been a shift change.

Liam, I have a very loooong thin line of Author's names. I used a Text Media generator. I made a huge moving strip and used "placement" to have pass from Right to Left. I rendered this. I now have a beautiful moving line of these names - Ok - However, they ARE now on a Black Background. Soooo... one option, I thought, was that from this point I could render an uncompressed AVI and have this Black background magically converted to transparent.

I read and re-read your threads thinking I could do this. But I have to START with a Transparent-PRESERVED AVI .. Only option now is to make a CK thing. Can I do this and have the mask and what is around it transparent? - No?

Thaks Guys for the help today .. I'm reeeellly tired and your humour helped.

Grazie

( .. . what a year to give up smoking? )

Grazie,

Maybe I don't exactly understand what you want to do but couldn't you just apply the Mask Generator fx to the event with the text? Your black background would then be transparent. No rendering needed.

Larry

Grazie... if you did not ADD any background to the video... and you simply overlayed the text genertor on the track(s).. .then you do have a transparent background. Vegas simply shows this as black.

Do this test.

Load a solid color media generator (something bright) underneath all the other tracks. Does your text appear over the top of this... showing that it is "appropriately" transparent where you expect it to be? So in other words... at this point you have the text doing what you eventually want it to do when you <successfully> render it out and pull it back into another project.

If you now mute that solid color track (or delete it)... you should just be able to render it as uncompressed with alpha (also set properties to alpha) and load it back in.

If something else is happening... then there are strange things going on.

I'll give it a try myself and post a zip with the test files somewhere.

Larry:-

”Maybe I don't exactly understand what you want to do but couldn't you just apply the Mask Generator fx to the event with the text? Your black background would then be transparent. No rendering needed.” – Sounds interesting



Liam:-

“ “ .. .if you did not ADD any background to the video... “ Nope no background – just used the Text Generator


“.. .then you do have a transparent background.” - Prior to render yes. I agree and that’s what I did.

“Vegas simply shows this as black. “ Nope, prior to rendering it is “chequered” – THEN it turns “black” after rendering

”Load a solid color media generator . . . "appropriately" transparent where you expect it to be? Prior to render, yes. Post render no.

“So in other words... at this point you have the text doing what you eventually want it to do when you <successfully> render it out and pull it back into another project.” - Yes, prior to render it is transparent.

”If you now mute that solid color track (or delete it)... you should just be able to render it as uncompressed with alpha (also set properties to alpha) and load it back in.” AHA! Yes, that is correct. This I know.

However, I now have a black background, I didn’t render uncompressed, I didn’t save as Alpha. My question is that IF I now have a black background, can I now convert THAT black background to being transparent?

“If something else is happening... then there are strange things going on.” - That’ll be me … that’ll be me . . .

Grazie

OK... I uploaded a sample Veg and a one second uncompressed AVI file with alpha generated from this Veg.

Download it here (2MB Zip file).

However, I now have a black background, I didn’t render uncompressed, I didn’t save as Alpha. My question is that IF I now have a black background, can I now convert THAT black background to being transparent?

I'm now thoroughly confused. I think from what you were saying above... is that although the background looks as if it is black... you have verifiried it is REALLY transparent because you can have lower tracks show through beneath these right?

If so... THEN IT IS ALREADY TRANSPARENT... and although it LOOKS like you have a black bakground... you don't in fact HAVE a black background. I think I am beginning to repeat myself here. I just KNOW I am not describing this right.

You also say above - that you have not yet rendered this as uncompressed. WHAT???? I thought that was what you had already done... and said you had done in the prior posts. If you have not yet rendered this as uncompressed with Alpha preserved... it will never ever work.

I think I need my afternoon nap.

Wow! - Just "spoke" with Liam . . what a bloke! - Thank you!

G