or if you do don't opt-in to this.
First off thank-you to the uploaders for uploading the videos - This site wouldn't be here without you.
But please know that that certain hosts like Openload or FileUpload recompress all video files they recognize to make them smaller and lower quality.
You might have uploaded say a 1.3 GB video, but the next day (or maybe just hours later) that video will have been recompressed to 420 MB and the quality will now be far worse.
Please help preserve the quality of videos by either uploading them to other hosts that do not recompress or opt-out of the recompression.
Openload states "The maximum file size is limited to 1 GB. Your files can be up to 10 GB without any restrictions if you let us convert them."
Given that wording I'm guessing you can opt-out of recompression as long as you don't upload files larger than 1 GB. A 1 GB'ish video that have not been recompressed looks far better than a 200 to 500 MB video that have.
A trick I've seen other sites using is to still upload large files and allow for files to be recompressed, but only upload files that the filehost does not know how to recompress.
Download sites typically use .rars but I don't know what video formats would not get recompressed - you will have to experiment.