Stratified Media Sampler

Long-form audio and video sampler for quickly capturing the overall impression of a work by playing short randomized segments across the full timeline.

All processing happens locally in the browser. Files are not uploaded.

Live app: https://yminod.github.io/stratified-media-sampler/

Features

• Load multiple media files or drop a folder containing media files
• Treat multiple files as one continuous timeline
• Build randomized segment lists using stratified sampling
• Use presets or custom values for layer count and segment length
• Optionally keep each segment within a single file
• Reproduce a run with the same file order, settings, and seed
• Review the playback log and copy it as JSON
• Switch the UI between Japanese and English

Usage

1. Open the app in a modern desktop browser.
2. Add files by drag and drop or by using the file picker.
3. Review or reorder the input file list if needed.
4. Choose a preset or set custom sampling values.
5. Generate the segment list.
6. Start playback and move through segments with the playback controls.

Browser Notes

• Chrome, Edge, and Firefox are expected to work.
• Folder drag and drop behavior differs slightly across browsers.
• If folder drag and drop is unreliable, use regular file drag and drop or the file picker.

Reproducibility

Reproducibility depends on all of the following:

• the file order
• the sampling settings
• the seed value

Development

The main application file is stratified-media-sampler.html.

For GitHub Pages, index.html redirects to that file.