Free Online MP4 Video Downloader: No Signup, No App
Every platform has its own downloader sites, its own apps, its own limits. xi is one downloader for all of them: TikTok, YouTube, Instagram, Facebook, X, and Twitch — one bookmark, one input box, zero accounts, zero installs. Paste any supported link and get an MP4 video or MP3 audio in seconds. This page is the overview: what works, how to use it, and the honest limits. One page, one box, six platforms — and the same honest rules everywhere: public videos work, private ones do not, and everything is free.
How the free downloader works
- Copy the link to the video you want — from TikTok, YouTube, Instagram, Facebook, X, or Twitch. On mobile use the Share button; on desktop copy the address bar URL.
- Go to apiproai.com in any browser. There is no signup page and nothing to download — the tool is the website.
- Paste the link into the input box and press the download button. xi detects the platform automatically and fetches the available formats.
- Pick video (MP4) or audio (MP3) and tap Download. The file saves to your device's normal download location.
What each platform gives you
- TikTok: clean MP4 without the watermark, at the best quality TikTok serves — plus MP3 audio extraction for sounds and music.
- YouTube: video downloads from public videos, and MP3 extraction for music, podcasts, and lectures. Age-restricted or login-required videos cannot be processed.
- Instagram: reels and video posts from public accounts. Private accounts' content is off-limits to every downloader.
- Facebook: public video posts and reels. Content limited to friends or groups cannot be fetched.
- X (Twitter): videos and GIFs from public posts, saved as MP4.
- Twitch: clips from public channels. Full VODs depend on availability — clips are the reliable case.
- The universal rule: if a video is private, deleted, or requires login, no downloader can get it. Anything public is fair game for personal saving.
- Not sure which format to pick? Our MP4 vs MP3 guide breaks it down in plain language.
- If a link fails, our download-failed troubleshooting guide walks through the seven most common causes in order.
- Bookmark this guide page itself — it doubles as a quick reference for which platforms are supported and the honest limits that apply everywhere.
Frequently asked questions
Is it actually free, or is there a catch?
It is free with no signup and no download caps for normal use. There are no 'pro' tiers gating basic downloads.
Do I need to create an account?
No. Accounts exist on many downloader sites to track and upsell you. xi simply does not have accounts.
Which is better, MP4 or MP3?
MP4 if you want the video; MP3 if you only need the sound (music, podcasts, voiceovers) and want a much smaller file. There is a full comparison in our MP4 vs MP3 guide.
Can I use it on iPhone?
Yes. Safari works fully — files save to the Files app, from where you can move them to Photos or share them anywhere.
Why did my link fail?
The common reasons: the post is private or deleted, the link was copied incompletely, or the platform is temporarily throttling requests. Check the link, confirm the post is public, and retry.
No signup · No app · Works on phone and PC