The topic of Premiere Elements transparency and superimposing can be found in Adobe documents such as Adobe Premiere Elements Help/Transparency and superimposing and Adobe Premiere Elements Help/Effects Reference which include insights into transparency terms such as alpha channel, Opacity, Mask, Matte, and Keying. And, the ATR Premiere Elements Troubleshooting blog series has looked at various techniques for creating transparency in the Premiere Elements Timeline content. For example, see
PE: Videomerge Produced Transparency Lost in 4K (3840 x 2160) Sized Export
PE: Non Red Key. What is it?
PE: Alpha Adjust. What is it?
PE 11: Image Transparency and Videomerge Pop Up
PE 11: Difference Matte As Substitute for Green or Blue Screen Key
This blog post will share some "What is this?" information targeting a few of the keying effects found under Expert workspace Applied Effects/Keying in Premiere Elements 11 through 14/14.1 and Edit Menu/Effects/Video Effects/Keying in Premiere Elements 10 and earlier. The keying effects focused on here are
- Image Matte Key Effect
- Luma Key Effect
- Remove Matte Key Effect
- Remove Difference Effect
- RGB Difference Key Effect (Windows Only)
Image Matte Key Effect
Luma Key Effect
Remove Matte Key Effect
RGB Difference Key Effect (Windows Only)
WORK IN PROGRESS - Incomplete Blog Post As Of July 31, 2016.
The RESULTS section details, explanations, and graphics are being worked on and are expected to be posted in this blog post soon. Apologize for the posting delay, and thanks for your patience.