I am trying to present a series of 150 images and videos while collecting a participant response (150 trials, each with an image, video and response).
The problem is, that on trial 62 everything crashes with a “MemoryError” or “too many files open”
I think the problem is with MovieStim3?
mov = visual.MovieStim3(win, t.videoFileName, pos=((layout[‘spacing’]+layout[‘video_size’])/2,0), size=layout[‘video_size’],loop=True)
I am changing the name of the movie to be loaded on each trial.
Every new movie, though, PsychoPy creates a new process and the memory load increases on the computer (as assessed by the task manager). Until death…
I am thinking that psychopy is not clearing the video from memory after the video is done running.
After the video is over, the memory load does not go down and the process does not end. So the number of running processes and the memory load continue to build over the course of the task.
We are trying to run about 150 trials (using 150 videos) and the program crashes from a memory load error or a ‘too many files open’ error on trial 62
If the error is happening on trial 62, it shouldn’t be a preloading problem. My guess is that it loads each video as it is played but doesn’t release the memory afterwards.
How can I get PsychoPy to clear the memory of the video after it runs?! I have tried things like Del and Close but they don’t seem to be working.
Thank you so much for reading and if anyone can help it would be greatly appreciated!
I am using
PsychoPy2 Coder (IDE) (v1.90.2)
64-bit Operating System, x64-based processor
Traceback (most recent call last): File "C:\Users\lab-user\Documents\GitHub\CERES\CERES_EXP_PJR.py", line 431, in <module> sequential_trial(i) File "C:\Users\lab-user\Documents\GitHub\CERES\CERES_EXP_PJR.py", line 241, in sequential_trial t.showVideo() File "C:\Users\lab-user\Documents\GitHub\CERES\CERES_EXP_PJR.py", line 86, in showVideo mov = visual.MovieStim3(win, self.videoFileName, pos=movie_loc, size=movie_size) File "C:\Users\lab-user\Desktop\PsychoPy2\lib\site-packages\psychopy\visual\movie3.py", line 134, in __init__ self.loadMovie(self.filename) File "C:\Users\lab-user\Desktop\PsychoPy2\lib\site-packages\psychopy\visual\movie3.py", line 180, in loadMovie self._mov = VideoFileClip(filename, audio=(1 - self.noAudio)) File "C:\Users\lab-user\Desktop\PsychoPy2\lib\site-packages\moviepy\video\io\VideoFileClip.py", line 81, in __init__ fps_source=fps_source) File "C:\Users\lab-user\Desktop\PsychoPy2\lib\site-packages\moviepy\video\io\ffmpeg_reader.py", line 72, in __init__ 4.3545 WARNING Monitor specification not found. Creating a temporary one... 4.3563 WARNING User requested fullscreen with size [800 600], but screen is actually [1920, 1080]. Using actual size self.lastread = self.read_frame() File "C:\Users\lab-user\Desktop\PsychoPy2\lib\site-packages\moviepy\video\io\ffmpeg_reader.py", line 147, in read_frame result = np.fromstring(s, dtype='uint8') MemoryError