

If your drive is the bottleneck, this will make things worse. If you want to proceed:
You’re already using ffmpeg to get the sequence of frames, correct? You can add the -ss
and -t
flags to give a start time and a duration. Generate a list of offsets by dividing the length of video by the number of processes you want, and feed them through gnu parallel to your ffmpeg command.
I’ve had the same problem with HeliBoard learning garbage. I just changed my settings though, and I think it should help:
If you scroll all the way to the top again, you can manually manage the personal dictionary, including adding words you do want, and deleting any junk that was added by mistake, before switching that setting off.