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Export not Rendering Alpha Channel With Any Codec or Render
Hi, I am using the most up to date version of Premiere CC. This problem is that Premiere seems to not render my alpha layers when I export my video to any codec.
For this project I have created a series of Animation Quality quicktime titles in AE, and rendered them with RGB+Alpha depth. They play fine in Premiere, and the Alpha channel shows its transparency in the timeline and program windows. But when I export out from Premiere, the Alpha channels are all black no matter what codec or format I render to… This has never happened before, and I can not figure out why this would happen.To illustrate, here is the image of my timeline in the Export Window – where you see that the titles have retained their alpha layer transparency in Premiere – and then a screen shot of the exact same segment after it has been exported, and you can see that none of the alpha information has been retained.
Can anyone help me figure out what is going on?
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3 Replies
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H264 doesn’t carry an alpha channel…you need a format that does like QT Animation or QT PNG.
TimK,
Director, Consultant
Kolb Productions,Adobe Certified Instructor
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But h264 with an .mp4 container does? Because that worked, just not a quicktime with .h264 codec. Nor would it work with ProRes 422. FCP7 and any other NLE can achieve this, the problem is that Adobe’s render engine isn’t “rendering” the video to a flat layer. It should be compiling all layers to a final output and transcoding that with whatever codec I choose. Case in point, I can export the same layers from AE to a h264 quicktime and it compiles and renders it just fine. The “render” engine in Premiere is broken.
Thank for no help and not entirely reading my comments!
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I’m having the exact same problem here. Has anyone been able to find a solution to this?
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