Refcount/Memory issues

Created by: mkassner

I m not versed with Pyhton refcounting and memory management but I have experienced some problems with av.VideoFrame

In my application I save numpy arrays to a video file using pyav. For this I call:

frame = av.VideoFrame(input_frame.width,input_frame.height,'bgr24') to create a frame for each image.

Since this is done inside a fn that is called continuously, I expect frame to go out of scope and be garbage collected. On MacOS this is the case and I don't have any trouble.

However on Linux I quickly run out of memory (I can watch the python process growing in memory use until the system hangs.)

A simple workaround is creating a single instance of frame attaching it to self. and re-using it by updating the planes.

Any ideas why this happens when I make new frames?