Understand the project
Practical overview
When it fits
Use Katna when a Python workflow needs repeatable keyframe extraction, video compression, or image crops and resizing for specified dimensions.
Who it is for
- Python developers automating video frame extraction or compression.
- Teams processing images into target dimensions or aspect ratios.
Documented uses
- Select representative frames to summarize a video.
- Compress video files.
- Find image crops for a target resolution or aspect ratio.
- Resize images while avoiding distortion.
Before you choose
Requirements & limits
- Image resizing to a different aspect ratio can remove image content because it selects a crop.
- Video resizing to a different aspect ratio is experimental and requires additional MediaPipe installation and configuration.
- The README lists common video formats such as MP4, MOV and AVI, and image formats such as JPG, PNG and JPEG.
- The repository identifies the project as MIT-licensed.
Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.
Source-based practical guide
Install Katna from PyPI
Prepare a Python installation with the Katna package.
Before you start
- Python 3
- pip
Steps
Install Python 3.
Run pip install katna.
Expected outcome
The documented PyPI installation steps install the Katna package in the Python environment.
Guide limitations
- These steps cover installation only, not running a video or image-processing task.
Evidence and transparency
Sources & review
Source record details
- Source availability
- Active
- Sources checked
- 14 October 2026
- Original website title
- keplerlab/katna · Official homepage title · retained in its source language