Carla recorder

[Dan-A22]

Hi everybody. I got 2 questions from the carla recorder:

1- Where is the location that the .log file is saved. I just want to make sure that everything is working fine and the simulation data is actually recorded.

2- I followed all the steps that were shown in the carla documentation here(https://carla.readthedocs.io/en/latest/adv_recorder/). The following is my complete code:

def main():
    actor_list = []
    try:
        client = carla.Client('localhost', 2000)
        client.set_timeout(10.0)
        client.start_recorder("/home/carla/recording01.log", True)
        world = client.get_world()
        world.set_weather(carla.WeatherParameters.ClearSunset)
        blueprint_library = world.get_blueprint_library()
        bp = blueprint_library.filter('model3')[0]
        spawn_point = random.choice(world.get_map().get_spawn_points())
        vehicle = world.try_spawn_actor(bp, spawn_point)
        actor_list.append(vehicle)
        bp = random.choice(blueprint_library.filter('vehicle'))
        spawn_point = random.choice(world.get_map().get_spawn_points())
        vehicle2 = world.try_spawn_actor(bp, spawn_point)
        actor_list.append(vehicle2)
        bp = random.choice(blueprint_library.filter('vehicle'))
        spawn_point = random.choice(world.get_map().get_spawn_points())
        vehicle3 = world.try_spawn_actor(bp, spawn_point)
        actor_list.append(vehicle3)
        time.sleep(1)
        vehicle.set_autopilot(True)
        vehicle2.set_autopilot(True)
        vehicle3.set_autopilot(True)
        timme = datetime.now()
        # dummy loop to keep the recording go for 60 seconds
        i = 1
        while (datetime.now() - timme).total_seconds() <= 60:
            i += 1
        client.stop_recorder()
    finally:
        print("destroying actors")
        for actor in actor_list:
            actor.destroy()
        print("done")

However when I try to replay it using the following code:

def main():
    actor_list = []
    try:
        client = carla.Client('localhost', 2000)
        client.set_timeout(10.0)
        client.replay_file("recording01.log", 0., 0., 1)
        world = client.get_world()
        world.tick()
        timme = datetime.now()
        while (datetime.now() - timme).total_seconds() <= 64:
            print(".")
            world.tick()
    finally:
        print("destroying actors")
        for actor in actor_list:
            actor.destroy()
        print("done")

nothing changes in the carla server and no errors appear in the terminal. am I doing something wrong? thanks for your help!

[stale[bot]]

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[PabloVD]

Sorry for the delay in our response. Here are the answers to your two questions:

1. When you start the recording, you should get a message with the path of the saved log, something like: Recording on file: /home/tda/.config/Epic/CarlaUE4/Saved/test1.log Anyway, you can specify the path of the log when you start recording by: client.start_recorder(logfile)

2. You do not need to perform the tick in replaying. Try with a simple code such as one below:

import carla
import os

client = carla.Client()
world = client.get_world()

logfile = "logfile.log"

id_vehicle = 25 # in case you want to follow one actor in the spectator

print(client.show_recorder_file_info(logfile, True))
print(client.replay_file(logfile, 0, 0, id_vehicle, False))