Downloading a YouTube video errors out, or the progress bar seems to run forever? Most cases have a clear technical reason — not a random glitch.
Why higher quality (1080p+) is always slower
YouTube stores higher-quality video (1080p, 1440p, 2160p/4K) and its audio as two separate streams (unlike 720p and below, which usually has a combined video+audio version ready to go). To deliver 1080p+, the tool has to download both streams and merge them with ffmpeg on the server before handing you the file — which is why it shows its own progress bar and is always slower than a 720p download. That’s expected, not a bug.
For a faster download, pick 720p — it’s usually available as a pre-combined file and downloads almost instantly.
A note on 1440p/2160p on iPhone
Above 1080p, YouTube usually only offers AV1/VP9 codecs (not H.264), and iPhone/iPad can’t save AV1/VP9 video to Photos. The download page flags these qualities with a ⚠️ warning — if you need to save to Photos on iPhone, pick 1080p or below.
Cases that simply aren’t supported
- A live stream or an upcoming premiere — only downloadable once the broadcast has ended and YouTube has finished processing it into a regular video (VOD).
- Age-restricted or login-required videos — YouTube blocks viewing without being signed in; the tool does not support bypassing that login wall, since it’s a deliberate content restriction.
- Members-only or paid videos — same idea: not downloadable unless you’re an authorized viewer.
Long videos (over an hour) take a while
Longer videos mean larger files and longer download + merge time, especially at high quality. For long videos, consider 720p if you don’t specifically need 4K.
Slow or blocked network
Some workplace or school networks throttle bandwidth to YouTube. If downloads are unusually slow across every video (not just long or high-quality ones), try a different network to rule this out.
Just need the thumbnail image, not the whole video? Use the dedicated YouTube Thumbnail downloader — no video+audio merge wait required.