Changes

• Back to using ffprobe to count the number of frames from a video since cv2 is unreliable / causing a lot of "stuck at 99%" errors. This should help with mkv files, as cv2 had issues counting mp4.

• Added -crf 17 to "pre_process" settings due to user request for better pre-processed bitrate (it was fairly low before). Expect larger disk usage and processing times, but better quality. This is modifiable in the yaml.

• Status will now say 100% instead of 99% when finished

• Using 'stream=avg_frame_rate' as a means of getting the frame rate at the request of this user. Sorry it took so long, was figuring out life stuff.