Why 1080p can need two streams
A higher-resolution picture and its audio are often delivered separately. If both streams are available, SaveFromNet can combine them into one downloadable video. It will not show a video-only stream as a finished file when it cannot also get audio.
MP4 and WebM are containers, not quality guarantees
A 720p MP4 and a 720p WebM can differ in codec, bitrate and size. The result card reports the actual container and height returned for that upload. A requested height may be absent even if another YouTube video offers it.
Picking a practical file
Start with a resolution your device can play and a file size you can store. The service caps a prepared file at 512 MB, so very long or high-bitrate videos may omit large options. Estimated sizes appear only when source information supports an estimate.
Only download content you own or have permission to use. No login, paywall, DRM, or private-access bypass is offered.
Questions about this topic
Can I choose 4K for every video?
No. A 4K option appears only when the source exposes one that fits the service limit.
Why is MP3 listed separately?
MP3 is a conversion from accessible audio, while M4A or WebM audio may come from the original source.