flutter/lib/utils/snapshot.dart

import 'package:path_provider/path_provider.dart';
import 'package:video_thumbnail/video_thumbnail.dart';

/// 视频首帧截取
Future<String?> generateVideoThumbnail(String videoPath) async {
  final tempDir = await getTemporaryDirectory();
  final thumbnailPath = await VideoThumbnail.thumbnailFile(
    video: videoPath,
    thumbnailPath: tempDir.path,
    imageFormat: ImageFormat.JPEG,
    maxWidth: 120,
    quality: 75,
  );
  return thumbnailPath ?? '';
}