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Rendering without the black default background
Hi There,
I am just learning AF and had a simple question.
I created some text in PS with a transparent background. Then imported the PSD into After Effects. Added some trapcode shine and it looks great.I can toggle the transparency grid and see there is a transparent background.
Then, when I try to render out as a quicktime movie .. the default black background is on my animation. Very frustrating.
Also, in the render option when I set it up as a quicktime movie it does not give me a RGB+alpha option. Is this my problem and how can I correct it. Adding a mask in PS?
Confused.
Thank you so much,
Doug
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4 Replies
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To confirm, you can render RGB+Alpha animations on a PC. And if you’re not sure about straight and premultiplied, see Aharon’s tutorial here.
Simon Bonner
youtube.com/simonsaysFX -
Thanks guy’s. I also watched the tutorial and think I should be able to figure this out now. I am rendering for the web in which Andrew Kramer recommends a quicktime movie (using animation) as a reliable format.
But I did read that quicktime will always ad a black background?
If this is the case.. it will never work using a quicktime render. What’s the next most reliable format that will keep the background transparent?
Thank you Dave and Simon.
Doug
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If you are rendering for the web, you’ll not want your final render to use the animation codec: it’s an intermediate codec (to use when you will need to process your video more in the future, or as a copy for your archives) and likely to be too large to (1) play on your machine without experiencing skipping and (2) download from the internet before you die of old age. Better to compress the video for the web. Having said this, if the video is for the web then there really is no need for an alpha channel, so perhaps you really mean to use the video for further processing. If so, animation is fine.
Simon Bonner
youtube.com/simonsaysFX -
I think the problem is that I am using a program called sitegrinder to build my website which doesn’t support transparency until I get a plug-in. So know matter what I do.. when I test the quicktime movie in the browser .. it comes in with the square black background. I can bring the footage into premier pro or back into after effects and it does have a transparent background.
I guess I need to do all the compositing in after effects.. then it will be fine.
I plan on using Photo-Jpeg as the codec for the Quicktime movie.
Thanks so much again,
Doug
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