VeloeKemonoPartyFlutter/lib/video_thumbnail_generator.dart

import 'dart:async';
import 'dart:typed_data';
import 'package:video_thumbnail/video_thumbnail.dart';

class VideoThumbnailGenerator {
  static final Map<String, Uint8List> _thumbnailCache = {};

  static Future<Uint8List?> getFirstFrameThumbnail(String videoUrl) async {
    if (_thumbnailCache.containsKey(videoUrl)) {
      return _thumbnailCache[videoUrl];
    }

    try {
      final uint8list = await VideoThumbnail.thumbnailData(
        video: videoUrl,
        imageFormat: ImageFormat.JPEG,
        maxWidth: 720,
        quality: 80,
      );
      if (uint8list != null)
        _thumbnailCache[videoUrl] = uint8list;
      return uint8list;
    } catch (e) {
      print("Thumbnail generation error: $e");
    }
    return null;
  }
}