CODEWITHSUNDEEP
pythonpython-imageio
Sam
Sam

Reputation: 404

how to to tackle OverflowError: cannot convert float infinity to integer

I am trying to read the frames using imageio API. I have a reader as an object which I have received using imageio.get_reader(video_path,"ffmpeg")

nframes =int(reader.get_length())     
for ii in range(nframes):
    while frame_q.qsize() > 500: # so that we dont use huge amounts of memory
        time.sleep(1)
    cur_img = reader.get_next_data()
    frame_q.put(cur_img)
    #shape = cur_img.shape
    #noisy_img = np.uint8(cur_img.astype(np.float) + np.random.randn(*shape) * 20)
    #frame_q.put(noisy_img)
    if ii % 100 == 0:
        print("%i / %i frames in queue" % (ii, nframes))
print("All %i frames in queue" % (nframes))

Traceback:

 Traceback (most recent call last):
  File "/home/prashantb/anaconda3/envs/demo/lib/python3.6/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/home/prashantb/anaconda3/envs/demo/lib/python3.6/multiprocessing/process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "multiprocess_detect_actions.py", line 61, in read_frames
    nframes =int(reader.get_length())
OverflowError: cannot convert float infinity to integer

Initially, the nframe was a float value then I tried to convert it into an integer but then I am getting an OverflowError.I will appreciate your advice on this. Thank you.

Upvotes: 2

Views: 13461

Answers (2)

Sam
Sam

Reputation: 404

According to the new 2019 update 2.5.0 version from imageio : "The reader of the ffmpeg plugin now always reports inf as the number of frames. Use reader.count_frames() to get the actual number, or estimate it from the fps and duration in the meta data." imageio update

Upvotes: 4

Vincent
Vincent

Reputation: 472

In Python, float type can be infinity. To fixe your bug, you check if the value is inf ou -inf before convert to int:

def float_to_int(x):
    if x == float('inf') or x == float('-inf'):
        return float('nan') # or a large value you choose
    return int(x)

As @ShadowRanger noted, this solution just prevent the OverflowError error. You should investigate on the reader to fix the problem of infinite float.

Upvotes: 1

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