Source dimensions
The quality selector lists dimensions exposed by X, for example 1280 × 720. The highest available option may differ from the file originally uploaded by the author.
No invented HD options
Kuyom does not upscale video or create a missing 4K option. Direct MP4 files are supported; audio-only and separate video/audio tracks are excluded.
File limits
Higher dimensions usually need more storage and bandwidth. The actual download is limited to 120 MB. Choose a lower quality if a source file exceeds this limit.