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export to quicktime renders with black background _ no alpha channel
I have had trouble the last 2 weeks exporiting quicktime movies with alpha channels. The movie export settings are:
alpha _ straight
compression type _ DV/DVCPRO
Lower Field
High Quality
better quality field renderingI have reset the factory settings and reset tab setting.
Thanks in advance for your responses.
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5 Replies
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The previous message should have includedl: Does anyone know why I cannot export a QT movie with the alpha channel?
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Dv codecs don’t contain alpha channels Choose the animation or none for codec.
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I have tried the animation and “none” settings and the QT file still renders with a black backgound. Viewing the composite window while playing down the timeline I see the checkerboard pattern. When the movie file is rendering the black background shows in the composite window during the render.
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When rendering with the animation codec make sure million colors + is highlighted (the plus means alpha channel).
HTH,
Tim -
Millions+ was the answer. Thanks so much.
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