GIFs don't seem to support progressive drawing of frames.
- Dominant language
- Java
- Stars
- 786
- Forks
- 267
- PR merge metrics
- No merged PRs in 30d
Description
Running on an M1, downloaded ImageJ bundled with Zulu OpenJDK 13.0.6 and opened a GIF file:
Trying to play back the file inside ImageJ shows lots of dark pixels on the image. It seems like they represent the _translucent_ pixels not updated on gif animations, and instead of being skipped, black is being used. Here's the output GIF image produced by ImageJ. Note how also the framerate has slowed down a lot.
I tried the browser version and got the same results.
Contributor guide
No contributing guide indexed for this repository
Research direction
Start by reproducing the attached GIF in ImageJ on the reported M1 setup and in the browser version, then compare playback with the generated output GIF. Trace GIF frame compositing and timing until translucent, unchanged pixels render correctly and playback and output retain the expected framerate.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- computer-vision, desktop
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100