View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000571 | Cinelerra-GG | Feature | public | 2021-05-31 13:40 | 2021-06-02 09:50 |
| Reporter | pallium | Assigned To | PhyllisSmith | ||
| Priority | normal | Severity | minor | Reproducibility | have not tried |
| Status | acknowledged | Resolution | open | ||
| Summary | 0000571: Overlay : Alpha | ||||
| Description | Can you add the plugin of frei0r : alphaatop. -> https://www.mltframework.org/plugins/TransitionFrei0r-alphaatop/ Keep the alpha of the track above and remplace the pixels of the track above with the track below. Maybe with an example, it's more clear (video and picure below). | ||||
| Tags | No tags attached. | ||||
| Attached Files | |||||
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@pallium That would be a good addition. It is not as easy as just "adding it". A whole new plugin program has to be written in C++ code to create the desired effect. @Andrea_Paz Is there another plugin already that would get similar results? |
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I don't know much about Overlays. Probably what you are looking for is "Dsatop" or its opposite "Srcatop", which are among the Porter-Duff Overlays. see: https://cinelerra-gg.org/download/CinelerraGG_Manual/Overlays.html |
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@PhyllisSmith I just suggest. I don't want to stress someone. Cinelerra is a great surprise and I just want to help the project with my experience in video editing. @Andrea_Paz I tried all the overlays of Cinelerra 3 times and I don't get a similar result. |
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@pallium Cinelerra[--] can do that! Like @Andrea_Paz said you can use Overlay Mode,... or Overlay plugin (this one is more "flexible"). Of course your "Color Model" in Settings-> Format...-> Video section have to be RGBA or YUVA (with Alpha Channel). For Overlay plugin you can see my demo at: https://streamable.com/ddji2l For Overlay Mode you can see my demo at: https://streamable.com/8dh84l |
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[@IgorBeg; OT] Any chance you'd like to turn these 2 videos on alpha mode and the other on copying effects keyframes into video tutorials? |
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Hooo we need to do a "sandwich overlay". Very good!!! Thanks @IgorBeg. You also solved another of my problem: I didn't know to import a transition in black and white. Now it's possible with overlay and chromakey. |
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@pallium I am glad you have seen other things in my demo. This was my goal. When I do a demo I try to add other things that an User might think useful. @AndreaPaz About the 3 my demo, I guess you would like to have their with subtitles or am I wrong? Let's see. (I am getting lazy,... sorry) |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2021-05-31 13:40 | pallium | New Issue | |
| 2021-05-31 13:40 | pallium | File Added: overlay-alpha.webm | |
| 2021-05-31 13:40 | pallium | File Added: kdenlive-alphaatop.png | |
| 2021-05-31 16:07 | PhyllisSmith | Assigned To | => PhyllisSmith |
| 2021-05-31 16:07 | PhyllisSmith | Status | new => acknowledged |
| 2021-05-31 16:07 | PhyllisSmith | Note Added: 0004768 | |
| 2021-05-31 16:59 | Andrea_Paz | Note Added: 0004769 | |
| 2021-05-31 17:27 | pallium | Note Added: 0004770 | |
| 2021-06-01 20:34 | IgorBeg | Note Added: 0004771 | |
| 2021-06-01 22:37 | Andrea_Paz | Note Added: 0004772 | |
| 2021-06-02 02:48 | pallium | File Added: import-transition.png | |
| 2021-06-02 02:48 | pallium | File Added: transition-overlay-chromakey.webm | |
| 2021-06-02 02:48 | pallium | Note Added: 0004773 | |
| 2021-06-02 09:50 | IgorBeg | Note Added: 0004776 |
