[Melissa Kern]

it’s also crashing my Ae..

oh no..

what do I do?

[Melissa Kern]

AE does not say fail. it registers no error. when I check the output module.. it says it has rendered an Alpha channel. in the comp that I am rendering.. the background is transparent ( the original film is on the bottom layer but i have its visibility off- I don’t think that could be effecting it.??)
there is no solid layer hidden any where. i think I had frame blending on though- could that mess it up?
I’ve done this render repeatedly the last couple of days and I am baffled.
I’ve tried premultiplied.. straight. millions of colors, trillions of colors, floating.
I’ve remained in 32 bit though.. maybe I should switch to 16 bit???

[Melissa Kern]

okay. I figured out what LZW is.. and where to find it.. and yes it was not checked when I created the tiff sequence.
how do you feel about my other settings
RGB+ALPHA (I could not get an Alpha only render to work)
32 bit
floating
straight unmatted

[Melissa Kern]

hi
thank you for responding.
I just did try Tif straight unmatted Alpha.. but maybe my settings were not correct
I did
32 bit
floating
straight unmatted
and I have no idea what lzw (is that an “L” or an “I”?) setting is or where to find it.
maybe thats it???????
thanks again
m

[Melissa Kern]

hey, sorry for the confusion.
supposedly.. with DPX sequences- you do 2 passes. first RGB and then Alpha.
my text is white to be overlayed onto footage.
though
I was having the same trouble with the Tif.. trying to do 2 passes- RGB and then Alpha.
I can only do RGB+ALPHA … which I am familiar with-its what I use all the time when creating Quicktimes.
the Post House specifically requested the 2 passes- since they will use the alpha channel pass to burn a hole and then fill it with the RGB. at least that how I understand it.
what should be transparent is black-the text remains white. thats how it looks when I reimport back into AE 10
I am using 32 bit
1920 x 1080
floating depth
straight unmatted.
maybe the pixelation is coming from that- which is the other issue. after I gave up on the 2 passes and went back to RGB + Alpha.. the text they say has pixelated edges.
sorry for the confusion. I’m confused too
thanks for your help
m

[Melissa Kern]

thanks for your help.I did provide the post house with both a DPX Alpha premultiplied version and a DPX Alpha straight version.
they said both came up “black”-instead of transparent.
They then requested the .tif with RGB+ALPHA- that they then said was “pixelated”.
I am working in 1920 x 1080 32 bit.
in terms of the RGB+ALPHA I sent-I believe was premultiplied..
I can try the straight RGB+ALPHA and see if that helps the with pixelation.
I still have no idea why the alpha channel I am sending them is coming up black?
again. thank you for your help. I’m really at a loss..I haven’t worked with a post house before- I usually do my own compositing in AE10 and output the final animation uncompressed. so, I don’t even know what software they are using..? could that be the problem?

[Melissa Kern]

wow. that really helps! I’ll listen to the podcast as well.
what I am rendering is a title sequence- just white lettering that goes over the film image-except for a few instances- where it appears over black. when I said it was all black- I meant except for the white lettering.
I expected-as is the case with RGB+Alpha Quicktime .mov- that I would see the transparent as transparent. which I guess in this case- I would not. and now I am rendering from the same comp as the original RGB render so all should be well. I am rendering as premultiplied. hopefully, that is correct.
I’ll go listen to the podcast.
awesome. super super awesome.
thanks
m

[Melissa Kern]

okay. so the last render came out black as well. I was using no color management. this time I am going to try using Adobe RGB Linearize.. should that make a difference?

[Melissa Kern]

I made first the RGB sequence.. and then imported back into AE. from that sequence I attempted to make theAlpha sequence. and yes- when it was all done it had at least 700 less frames and the screen image was completely white- I tried pressing the checkerboard icon= and nothing happened.
so. I went back to the original comp(with all the multiple layers)…and made another DPX Sequence with only Alpha selected. this- when it was done- had the right amount of frames but then the screen was completely black= again clicking the checkerboard icon did nothing.
I’m now rendering from a pre-comp- only Alpha.. and I made doubly sure to have the checker board icon
clicked before rendering- though I don’t believe AE renders the bg color ever-I just wanted to make sure.
sorry, that I am such a dunce about all this. I usually just output RGB+Alpha to a Quicktime. I really have no idea what I am doing..but this is what the studio asked for. I’m not even sure if premultiplied is the right setting????
anyway, thanks so much for your help. its really amazing that you do this. I really appreciate it.
m

[Melissa Kern]

Hi again..
so 2 strange things occured..or at least I find them strange.

the Alpha Channel Sequence is shorter than the RGB. though the render que says its done.. and when I check the output module- it says the correct length. about 30 sec shorter.
and finally, when I import the DPX Sequence with Alpha channel- the screen in completely white?
-not sure if this okay.. both seem odd to me.