code: def test_BlendVideos(self):
      overlay_path, _ = VideoAugConfig(
          input_file_index=1
      ).get_input_path()
      self.evaluate_class(
          vidaugs.BlendVideos(overlay_path=overlay_path, opacity=0.5),
          fname="blend_videos",
      )
  
file_path: AugLy/augly/tests/video_tests/transforms/image_based_test.py
imports: import json
  import unittest
  from augly import video
  from augly.tests.base_configs import VideoAugConfig
  from augly.tests.video_tests.base_unit_test import BaseVideoUnitTest
  from augly.utils import VIDEO_METADATA_PATH
  from augly.utils.ffmpeg import get_conditional_for_skipping_video_tests
label_desc: Use image node_id 2 for calling the TransformsVideoUnitTest obj's underlying member method code with example usage: obj.test_BlendVideos() without return types