Note
Go to the end to download the full example code.
Video playing made simple#
This shows how to play a video file in expyfun. It requires that FFmpeg (for Pyglet >= 1.4) or AVBin (otherwise) has already been installed.
@author: drmccloy
exp_name: simple video example
date: 2024-10-08 13_43_00.163311
file: /home/circleci/project/examples/stimuli/simple_video.py
participant: foo
session: foo
2024-10-08 13:43:00,163 - INFO - Expyfun: Using version 2.0.0.dev0 (requested dev)
2024-10-08 13:43:00,164 - INFO - Expyfun: Setting up sound card using pyglet backend with 2 playback channels
2024-10-08 13:43:00,359 - WARNING - Expyfun: Mismatch between reported stim sample rate (24414) and device sample rate (44100.0). Experiment Controller will resample for you, but this takes a non-trivial amount of processing time and may compromise your experimental timing and/or cause artifacts.
2024-10-08 13:43:00,360 - INFO - Expyfun: Setting up screen
2024-10-08 13:43:00,391 - EXP - Expyfun: Set screen visibility True
2024-10-08 13:43:00,399 - INFO - Initialized [720 480] window on screen XlibScreen(display=<pyglet.canvas.xlib.XlibDisplay object at 0x7f392c363f10>, x=0, y=0, width=1400, height=900, xinerama=0) with DPI 69.73
2024-10-08 13:43:00,399 - INFO - Expyfun: Initializing dummy triggering mode
2024-10-08 13:43:00,400 - INFO - Expyfun: Initialization complete
2024-10-08 13:43:00,400 - EXP - Expyfun: Participant: foo
2024-10-08 13:43:00,400 - EXP - Expyfun: Session: foo
2024-10-08 13:43:01,518 - INFO - Expyfun: Exiting
2024-10-08 13:43:01,523 - EXP - Expyfun: Audio stopped and reset.
from expyfun import ExperimentController, building_doc, fetch_data_file
from expyfun import analyze as ea
print(__doc__)
movie_path = fetch_data_file("video/example-video.mp4")
ec_args = dict(
exp_name="simple video example",
window_size=(720, 480),
full_screen=False,
participant="foo",
session="foo",
version="dev",
output_dir=None,
)
screenshot = None
with ExperimentController(**ec_args) as ec:
ec.load_video(movie_path)
ec.video.set_scale("fit")
t_zero = ec.video.play()
while not ec.video.finished:
if ec.video.playing:
fliptime = ec.flip()
if screenshot is None:
screenshot = ec.screenshot()
if building_doc:
break
ec.check_force_quit()
ec.delete_video()
ec.flip()
ec.screen_prompt("video over", max_wait=1.0)
ea.plot_screen(screenshot)
Total running time of the script: (0 minutes 1.733 seconds)