wulkano/kap

Dot Matrix grid pattern appearing when exporting to gif

Open

#1072 opened on Jan 9, 2022

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 (17 comments) (1 reaction) (0 assignees)JavaScript (11,043 stars) (548 forks)batch import
Help Wanted

Description

macOS version: 12.1 (Monterey) Kap version: 3.5.1

Steps to reproduce

  • Record a screencast
  • Convert to Gif (tested at many different settings, even original size)

Current behaviour

Here is the current behaviour when exporting as a gif (note the dot matrix pattern, possibly a compression artefact?)

Bad Artefacts

github_download

Unfortunately even at original resolution, I can still see it, but obviously it's fainter.

Kapture 2022-01-09 at 08 18 24

Expected behaviour

No Dot Matrix pattern in exported gifs.

Workaround

None available...

Contributor guide

Tech stack
javascriptelectron
Domain
desktop
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
JavaScriptElectronImage processingGIF format
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
The bug involves dot matrix artifacts when exporting GIFs. Investigate the GIF encoding pipeline in Kap, likely using a library like gifencoder or similar. Look at the export configuration settings for dithering and quantization. Check if there are any open discussions or attempted fixes in the comments. Consider implementing a fix by adjusting the encoder parameters or switching to a different library.