conf-trapping.md

Home > Preparation > Preparation for Degradation Category Rating (DCR) > Configure for create_trapping_clips.py

Configure for create_trapping_Clips.py

This describes the configuration for the create_trapping_clips script. A sample configuration file can be found in configurations\trapping.cfg. The create_trapping_clips script creates the trapping clips using a subset of videos in the original dataset. For each video, it will use the video parts from begining and end, and add a text message in between asking participant to select an specific answer to show their attention.

[trappings]

• messages_line1, messages_line2: the message to be shown to the participant. {0} will be replaced with a number between scale_min, and scale_max.
  message_duration_in_seconds: for how long should the message be shown scale_min: minimum score that can be selected using the scale e.g. 1. scale_max: maximum score that can be selected using the scale e.g. 5.

One of the following options should be used:

• include_from_source_stimuli_in_second = 2: use first 2 seconds from the source clips to generate the trapping clips. It may lead to a clip duration that is different from the rest of clips which should be rated.

• keep_original_duration = true: As a result each generated clips will be as long as the corresponding original clip. It is the recommended setting.