gistfile1.txt

import json
import copy
with open('test.json') as fh:
    o = json.load(fh)
    result = copy.deepcopy(o)
    for case_name in o:
        for browser_type in o[case_name]:
            new_origin_values = []
            for values in o[case_name][browser_type]['origin_values']:
                new_origin_values.append({"load": values[0], "si": values[1], "psi": values[2], "video":values[3], "ip": values[4]})
            result[case_name][browser_type]['origin_values'] = copy.deepcopy(new_origin_values)


with open('output.json', 'w+') as write_fh:
    json.dump(result, write_fh)