OSError on `get_frame(__some_existing_large_index__)

Expected Behavior

> clip = VideoFileClip(str(video_path))
> clip.duration * clip.fps
252723.60000000003
> clip.get_frame(10000) # Should return 10000th frame

Actual Behavior

> clip = VideoFileClip(str(video_path))
> frame = clip.get_frame(0)   # works
> clip.duration * clip.fps
63229.799999999996    # The duration is '17min 34sec'
> clip.get_frame(63220) # Throws OSError even though the given frame 
                                       # number is  before the end of the video.
> clip.get_frame(6322)   # Throws OSError
> clip.get_frame(632)     # Works.

Here’s the error message:

OSError: MoviePy error: failed to read the first frame of video file /app/data/streams/unravel1/unravel1_cropped.mp4. That might mean that the file is corrupted. That may also mean that you are using a deprecated version of FFMPEG. On Ubuntu/Debian for instance the version in the repos is deprecated. Please update to a recent version from the website.

Steps to Reproduce the Problem

Run the above code with the video: https://www.dropbox.com/s/27mie3v8kvo30fz/unravel16_cropped.mp4?dl=0

Specifications

• Python Version: ‘3.6.8 (default, Jan 14 2019, 11:02:34) \n[GCC 8.0.1 20180414 (experimental) [trunk revision 259383]]’
• Moviepy Version: ‘1.0.0’
• Platform Name: Ubuntu
• Platform Version: 16.04LTS. Linux 4f9e6923e339 4.15.0-58-generic

[keikoro]

@SuperShinyEyes Did the above info help you resolve your problem?

[billop]

.get_frame’s input is seconds, not frame no.

I use this:

vid.get_frame((n / (vid.duration * vid.fps)) * vid.duration)
vid.get_frame(n / vid.fps)