generateCoverThumbnails function

Stream<List<CoverData>> generateCoverThumbnails(VideoEditorController controller, { required int quantity, int quality = 10, })

Implementation

Stream<List<CoverData>> generateCoverThumbnails(
  VideoEditorController controller, {
  required int quantity,
  int quality = 10,
}) async* {
  final int duration = controller.isTrimmed
      ? controller.trimmedDuration.inMilliseconds
      : controller.videoDuration.inMilliseconds;
  final double eachPart = duration / quantity;
  List<CoverData> byteList = [];

  for (int i = 0; i < quantity; i++) {
    try {
      final CoverData bytes = await generateSingleCoverThumbnail(
        controller.file.path,
        timeMs: (controller.isTrimmed
                ? (eachPart * i) + controller.startTrim.inMilliseconds
                : (eachPart * i))
            .toInt(),
        quality: quality,
      );

      if (bytes.thumbData != null) {
        byteList.add(bytes);
      }
    } catch (e) {
      debugPrint(e.toString());
    }

    yield byteList;
  }
}