-
no black bars in my SGI export
Hi, i didnt get any feedback when i posted this in the basic forum… perhaps it wasnt as basic as i thought. anyway, i was working a 720×640 composition. my original footage is anamorphic so the video has the black bars on top and bottom. the display shows them, but when i export my comp as an SGI the bars arent there. i opened the image in in After Effects and apparently the info IS there, just that it was saved as an alpha channel. do anyone know how to fix this? i think my FCP copy might be crazy earlier today i exported a sequence without a hitch but the next one had this problem… thnx!
-
11 Replies
-
720×640 Anamorphic?
SGI?
How’d you export an alpha channel?
-
i am sorry if i wasnt clear, let me try again…
i usually export my edited material as an image sequence (.SGI precisely)since my original material is anamorphic (widescreen) when i edit for NTSC the format has bars.
usually FCP allows me to export each frame as it is. with bars, but lately the exported files have no bars, instead the space is black and when i import it to some other program, this space is recognized as an alpha channel. thnx, and sorry if i mixed up
-
What format is your timeline?
-
[vicorintian] “his space is recognized as an alpha channel.”
I don’t know what kind of codec are you using fwhen exporting, but now you are exporting “Millions+” this is why you get the Alpha channel.
Change to just “Millions”. No Alpha.
Try don’t export sequences from FC. You can only do it via “QT conversion” and this is not the most recommendable way to export from FC.
rafael -
thnks…
i know is not the best way, but i work in tandem with a silicon graphics FLINT, and i have to export as an image sequence for it to read it.millons+?? would you be kind enough to tell where can i change this? the options button is disabled when i select SGI as my image sequence format.i am such a noob…
-
If you are exporting to an image sequence, millions+ means nothing. You could choose 16 or 24 bits per pixel instead of 32. 32 bits carries the alpha.
Jeremy
Are you seriously working in a 720×640 timeline? I am still confused about that.
-
[JeremyG] “If you are exporting to an image sequence, millions+ means nothing. You could choose 16 or 24 bits per pixel instead of 32. 32 bits carries the alpha”
Sorry. i had not idea about that.
About the Millions+/Millions, when you export a QT movie with a codec that support Alpha channel, you got thes two options. Millions + is with Alpha, Millions without Alpha (you get black instead). In AE you can find Trillions+ as an option for 10/16b with Alpha.
Rafael -
No worries. Your response is totally valid and correct.
-
Are you seriously working in a 720×640 timeline? I am still confused about that.
sorry, i meant 720×480, why did i ever wrote that?? must be the sleep deprivation.
BTW apparently the probject without a hitch.i just wanna understand why this keeps on happening. -
So you are letter-boxing your 16×9 footage and you want a solidblack on top and down.
Fallow the advice of Jeremy, and you will get rid of the Alpha without afecting the quality of your picture..
rafael
Reply to this Discussion! Login or Sign Up