View Issue Details
ID | Project | Category | View Status | Date Submitted | Last Update |
---|---|---|---|---|---|
0000467 | Cinelerra-GG | [All Projects] Bug | public | 2020-06-27 21:04 | 2020-07-03 22:30 |
Reporter | skinkie | Assigned To | PhyllisSmith | ||
Priority | normal | Severity | minor | Reproducibility | always |
Status | assigned | Resolution | open | ||
Product Version | 2020-04 | ||||
Target Version | Fixed in Version | ||||
Summary | 0000467: Transparant PNG in the Video, is rendered in the compositor without "feathered" edges | ||||
Description | When a transparant PNG is added to the timeline without any video content behind it, the compositor does not show anti-aliased / feathered edges. When a video is actually behind the image, the aliasing is visible. | ||||
Steps To Reproduce | Add test.png to the timeline, observe nofeathering.png, or add a video and get with-background.png | ||||
Tags | No tags attached. | ||||
I think having "black" as the default to be blend with sounds what a user would expect. | |
@skinkie GG looked at the program code. When you draw the transparent png, you are just seeing RGB and alpha set to 1. (It is read in with the alpha channels all set to 1). Aliasing is done with the value of the alpha channels and it takes 2 to do any blending. Until you add a background (or using the foreground plugin on another track) there is nothing to blend. If you would like to have this work differently with being blended with black (I guess that would be the choice), GG said he could look into adding a Settings->Preference to allow for that. A Preference setting would be required so as to not affect pre-existing projects. Let me know one way or the other if you think coding this is worthwhile and would be used (assuming GG can easily implement). |
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test.png (353,175 bytes) |
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Date Modified | Username | Field | Change |
---|---|---|---|
2020-06-27 21:04 | skinkie | New Issue | |
2020-06-27 21:04 | skinkie | File Added: nofeathering.png | |
2020-06-27 21:04 | skinkie | File Added: test.png | |
2020-06-27 21:04 | skinkie | File Added: with-background.png | |
2020-07-03 22:13 | PhyllisSmith | Assigned To | => PhyllisSmith |
2020-07-03 22:13 | PhyllisSmith | Status | new => feedback |
2020-07-03 22:13 | PhyllisSmith | Note Added: 0003727 | |
2020-07-03 22:30 | skinkie | Note Added: 0003728 | |
2020-07-03 22:30 | skinkie | Status | feedback => assigned |