There are several good cloud storage options that maintain video quality when uploading. Here are some suggestions:
1. Google Drive - Google Drive offers free storage up to 15GB and has the ability to store and play video files up to 1080p quality.
2. Dropbox - Dropbox offers free storage up to 2GB and has the ability to upload videos up to 20GB in size without sacrificing quality.
3. iCloud - iCloud offers free storage up to 5GB and has the ability to store and play videos up to 4K quality.
4. Amazon Drive - Amazon Drive offers unlimited photo storage and 5GB of video storage for free with an Amazon Prime membership. It also supports 4K video quality.
5. Microsoft OneDrive - Microsoft OneDrive offers free storage up to 5GB and has the ability to store and play videos up to 1080p quality.
Overall, it's important to choose a cloud storage service that has enough storage capacity for your needs and supports the quality of videos you want to upload.