get_frame fails if not an early frame

[tbenst]

Expected Behavior

I can iter_frames with no issue, but get_frame does not work for large values:

video = mpy.VideoFileClip("vid.mp4")
np_frame0 = video.get_frame(324) # error
np_frame0 = video.get_frame(323) # ok
np_frame0 = video.get_frame(324) # ok

The error is SError: MoviePy error: failed to read the first frame of video file /data/deeplabcut_projects/Tail-suspension-Matt Wright-2019-11-09/videos/5475.vglut3.chr2.tst.half.second.stimDLC_resnet50_Tail-suspensionNov9shuffle1_5000_labeled.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.

Note that I can "rescue" the error by not seeking too far into the future. If I choose 324 in the future I get an error, but 323 is ok, and subsequently I can grab 324.

[tbenst]

this was a user error: I think I was going past length of video as this is in time, not frame index