How to Download YouTube MP4 Videos Free
Save any public YouTube video as an HD MP4 — or grab just the audio as MP3. xi is free, works in your browser, and needs no signup.
Download in 4 steps
- Copy the YouTube link. In the YouTube app tap Share → Copy Link, or copy the URL from your browser's address bar. Shorts links (youtu.be) work too.
- Paste it into xi. Open apiproai.com and paste the link into the input box.
- Click Download. xi fetches the video info in seconds. Choose MP4 for video or MP3 if you only want the audio.
- Save the file. Your browser downloads the file straight to your device — no extra apps, no waiting rooms.
Video or audio — your choice
Most people want the MP4: a tutorial to watch on a flight, a workout video for the gym, a lecture to review offline. xi delivers the HD stream YouTube serves, so quality matches what you'd see online.
The MP3 option is the quiet hero. Music videos, podcasts, interviews, language lessons — anything where you only need the sound. One paste, one click, and you have an audio file that plays in any music app.
Because xi runs entirely in the browser, it works the same on iPhone, Android, Windows, and Mac. There's no desktop program to install and no mobile app asking for permissions.
Frequently asked questions
Is downloading YouTube videos with xi free?
Yes, completely free. No signup, no software to install, and no limits on how many videos you can download.
What video quality can I download?
xi downloads the HD MP4 version YouTube serves — typically 720p or 1080p when available for that video.
Can I download just the audio as MP3?
Yes. After pasting the link, choose the MP3 option and xi extracts the audio track — handy for music, podcasts, and lectures.
Do long videos work?
Yes, but very long videos take longer to process and produce larger files. Use a stable connection for the best results.
Can I download private or age-restricted YouTube videos?
No. Only publicly available videos can be downloaded. Private, deleted, or login-walled videos aren't supported.