On Dailymotion, failed uploads count towards the 24-hour rate limit.

Dailymotion has a rate limit of somewhere between 10 to 15 videos (appears to vary). I experienced a glitch where I dragged 10 videos into the uploader (the highest number; years earlier it oddly was 22), and none of the uploads would start. However, it still counted towards the daily rate limit, immediately blocking me from uploading for 24 hours. I have a slight suspicion that this failure was deliberate.

Also, that rate limit is indiscriminate of video size. A gigabyte-sized 4K video counts equally towards the rate limit as a 7 MB 240p video.