import pickle

def get_video_ids(input_pickle_file, output_txt_file):
    with open(input_pickle_file, "rb") as fp:
        obj = pickle.load(fp)
        video_ids = obj.keys()

    with open(output_txt_file, "w") as out_f:
        out_f.write("\n".join(video_ids))


get_video_ids("raw_captions_noun-person_neg.pkl", "test_sampled_video_list.txt")