_alpha-track-matte-tutorial-64-sec.jpg "Alpha Track Matte Tutorial (64 sec) from is a mask necessary when walking Video Screenshot Preview")
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⏲ Duration: 64 sec
✓ Published: 27-Mar-2011
✓ Published: 27-Mar-2011
Description:
Use F4 to hide or reveal the 'TrkMat' column.nnWhen you choose 'Alpha Matte' from the drop down menu, After Effects will use the layer above as a 'matte'. This will mask off the bottom layer, using the top layer's Alpha Channel as a 'cookie cutter'.nnBy default, 'matte' layers become invisible, but the eyeball can be manually turned back on if necessary (usually to temporarily view the matte itself).nnI personally always color code 'matte' layers RED. The layers that 'use track mattes' I color c
Use F4 to hide or reveal the 'TrkMat' column.nnWhen you choose 'Alpha Matte' from the drop down menu, After Effects will use the layer above as a 'matte'. This will mask off the bottom layer, using the top layer's Alpha Channel as a 'cookie cutter'.nnBy default, 'matte' layers become invisible, but the eyeball can be manually turned back on if necessary (usually to temporarily view the matte itself).nnI personally always color code 'matte' layers RED. The layers that 'use track mattes' I color c
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