Videos no longer play – QuickLook only shows a static image
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- Dominant language
- C#
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Description
Previously, I was able to preview video files (like .mp4) directly in QuickLook without installing any additional plugins. However, now when I press the Space key on a video file, QuickLook opens a window but only displays a static image — the video doesn't play at all. No audio, no motion.
1Install QuickLook (base app only)
2Open File Explorer
3Select a video file (e.g. .mp4)
4Press the Space key
5QuickLook opens a window showing a static image of the video, but it doesn't play
The video should play normally (with audio and motion) as it used to, without requiring any external plugins.
OS Version: Windows 10
QuickLook Version: 4.0.2 (installed from GitHub MSI)
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the issue on Windows 10 with QuickLook 4.0.2 from the GitHub MSI, using an .mp4 selected in File Explorer and pressing Space. The payload names no files or tests, so trace the video-preview path from that entry point. Done means video previews play with audio and motion without external plugins.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- desktop, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100