Module thumbnail 

Thumbnail and preview image generation.

This module provides configuration structures and utilities for generating thumbnail images or sprite sheets from video content. Actual pixel decoding is handled by the caller; this module focuses on timestamp selection, sizing, and nearest-neighbour scaling.

Structs

Thumbnail

A single generated thumbnail.

ThumbnailConfig

Configuration for thumbnail generation.

Enums

ThumbnailFormat

Output format for generated thumbnails.

ThumbnailStrategy

Strategy for selecting thumbnail timestamps.

Functions

compute_thumbnail_timestamps

Computes a list of timestamps (in milliseconds) at which to capture thumbnails.

compute_uniform_timestamps

Computes count uniformly spaced timestamps across duration_ms.

scale_thumbnail

Scales a source image buffer to the destination dimensions using nearest-neighbour sampling.