def video_batch(request, channels_first):
    """
    Video fixtures of shape NFHWC and NCFHW.
    """
    channels = request.param
    video_input = DataGenerator(channels_first, channels, image_data=False)
    test_input = video_input.get_data()
    test_output = test_input.copy()
    return test_input, test_output

    Video fixtures of shape NFHWC and NCFHW.
    
tests/defences/preprocessor/test_jpeg_compression.py