4i.app (@4iapp) profile picture

4i.app

@4iapp

AI creators playground. Create a full 3-minute music video for less than 3 euro!

4i.app
Joined May 2026
  • Tweets629
  • Following207
  • Followers20
22Media
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Shot it horizontal, but the post needs to be vertical. Video Cropper lets you drag a crop box over the preview, snap it to 1:1, 9:16 or 16:9 or go freehand, and export just that part. It's free and runs in your browser, so nothing gets uploaded.
Screenshot of the 4i Video Cropper page: a drop zone for MP4, MOV, AVI, WebM or MKV files, with crop presets for 1:1, 9:16 and 16:9.

ALT Screenshot of the 4i Video Cropper page: a drop zone for MP4, MOV, AVI, WebM or MKV files, with crop presets for 1:1, 9:16 and 16:9.

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Learning a fast solo by ear is a lot easier at 0.75x. Audio Speed Changer slows a track down or speeds it up to 2x while keeping the pitch where it was, so you can still play along in the same key. Free, and it runs in your browser without uploading anything.
Screenshot of the 4i Audio Speed Changer page: a drop zone for audio and a speed setting with a Change speed button.

ALT Screenshot of the 4i Audio Speed Changer page: a drop zone for audio and a speed setting with a Change speed button.

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Most AI music video tools hit render and hope. In 4i Director Mode your track is split by lyrics and beat into scenes, and you direct each one. Hate the chorus shot? Regenerate just that scene. The export is yours. 4i.app
AI Music Video Maker, Song Generator & Free Creator Tools

AI Music Video Maker, Song Generator & Free Creator Tools

Turn any song into a music video scene by scene with 4i. Generate original songs and AI video, then polish everything with 30+ free image, video and audio tools.

4i.app
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Three clips from three phones, all in different formats. Video Joiner lets you drag them into order and merges them into one file, even when the codecs and aspect ratios don't match. It's free and runs in your browser, so nothing gets uploaded.
Video Joiner tool page on 4i.app: a drop zone for MP4, MOV, AVI, WebM and MKV files with a Choose files button.

ALT Video Joiner tool page on 4i.app: a drop zone for MP4, MOV, AVI, WebM and MKV files with a Choose files button.

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Every interview has those long pauses where everyone's thinking. Silence Remover cuts the dead air out of podcasts, interviews and voiceovers, with a light, normal or aggressive threshold so the pacing still sounds natural. Free, and it all runs in your browser.
Silence Remover tool page on 4i.app: drop zone for podcast or interview audio and a silence threshold setting with a Remove silence button.

ALT Silence Remover tool page on 4i.app: drop zone for podcast or interview audio and a silence threshold setting with a Remove silence button.

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Your next release deserves more than a link in a group chat. Publish it at 4i.app/browse/publish and it plays in 4i Player on iOS and Windows, next to other independent artists at 4i.app/browse. AI-friendly, but built for indie musicians.
AI Music Video Maker, Song Generator & Free Creator Tools

AI Music Video Maker, Song Generator & Free Creator Tools

Turn any song into a music video scene by scene with 4i. Generate original songs and AI video, then polish everything with 30+ free image, video and audio tools.

4i.app
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Got a great crowd shot from the gig but a few strangers didn't sign up to be on your feed? Face Blur Tool detects faces and blurs them, or you just paint over them with the brush and pick the blur strength. Free, runs in your browser, and the photo never leaves your device.
Screenshot of the 4i.app Face Blur Tool page with an image drop area and blur strength and brush size sliders.

ALT Screenshot of the 4i.app Face Blur Tool page with an image drop area and blur strength and brush size sliders.

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Your best thumbnail is probably hiding at 0:47. Video Frame Extractor grabs the first frame, the last frame, evenly spaced frames or one every 1, 2 or 3 seconds, and hands you the set as one zip. Free, and it runs in your browser, so your video never gets uploaded. 🎬
Screenshot of the 4i Video Frame Extractor page with a drop zone for a video file and a Choose video button.

ALT Screenshot of the 4i Video Frame Extractor page with a drop zone for a video file and a Choose video button.

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Every AI video tool says "automatic." That's the problem. 4i Director Mode times scenes to your lyrics and beat, then hands you the controls: prompt, reference image and camera per scene, and redo only the shot that misses. You own the export. 4i.app
AI Music Video Maker, Song Generator & Free Creator Tools

AI Music Video Maker, Song Generator & Free Creator Tools

Turn any song into a music video scene by scene with 4i. Generate original songs and AI video, then polish everything with 30+ free image, video and audio tools.

4i.app
50
Your mix sounds great until the next track plays twice as loud. Normalize Loudness brings any audio to a LUFS target, with presets for -14 (video/music), -16 (podcast) and -23 (broadcast). Free, and it runs in your browser, so your files never leave your device. 🎚️
Screenshot of the 4i Normalize Loudness tool: a drop zone for audio and a LUFS target setting with a Normalize loudness button.

ALT Screenshot of the 4i Normalize Loudness tool: a drop zone for audio and a LUFS target setting with a Normalize loudness button.

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Building a look around your cover art? Color Palette Extractor pulls the dominant colors out of any image and lets you copy the hex codes in one click, handy for matching posters, thumbnails or your site. It's free and runs in your browser, so the image stays on your device. 🎨
Screenshot of the 4i.app Color Palette Extractor tool page with an image drop area and an Extract palette button.

ALT Screenshot of the 4i.app Color Palette Extractor tool page with an image drop area and an Extract palette button.

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Want listeners who actually browse for new music? Publish at 4i.app/browse/publish and your tracks play in 4i Player on iOS and Windows, in a catalog of independent artists: 4i.app/browse. AI-friendly, indie musicians first.
AI Music Video Maker, Song Generator & Free Creator Tools

AI Music Video Maker, Song Generator & Free Creator Tools

Turn any song into a music video scene by scene with 4i. Generate original songs and AI video, then polish everything with 30+ free image, video and audio tools.

4i.app
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Got a vocal take or voiceover with fan noise, hiss or room tone underneath? Noise Reduction cleans up steady background noise with adjustable strength and exports an MP3. It's free and runs in your browser, so nothing gets uploaded.
Screenshot of the 4i.app Noise Reduction tool with an audio drop zone, a reduction strength slider and a Reduce noise button.

ALT Screenshot of the 4i.app Noise Reduction tool with an audio drop zone, a reduction strength slider and a Reduce noise button.

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Auto Cut takes a song and a handful of clips and edits them into a short montage cut to the beat, in vertical, square or widescreen. Handy for teasers and Reels when you have footage but no time to edit. It's free and runs in your browser, so your files stay on your device.
Screenshot of the 4i Auto Cut tool page with soundtrack and clip upload areas, aspect, length and transition style options.

ALT Screenshot of the 4i Auto Cut tool page with soundtrack and clip upload areas, aspect, length and transition style options.

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Auto Cut takes a song and a handful of clips and edits them into a short montage cut to the beat, in vertical, square or widescreen. Handy for teasers and Reels when you have footage but no time to edit. It's free and runs in your browser, so your files stay on your device.
Screenshot of the 4i Auto Cut tool page with soundtrack and clip upload areas, aspect, length and transition style options.

ALT Screenshot of the 4i Auto Cut tool page with soundtrack and clip upload areas, aspect, length and transition style options.

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Got a new track but no video to go with it? Audio Visualizer turns any song into a waveform or spectrum MP4 in square, ultra-wide or tall formats, up to 1920px wide. It's free and runs in your browser, so your audio never gets uploaded. 🎵
Screenshot of the 4i.app Audio Visualizer tool, with a Drop a track upload area and settings for visual type, resolution and aspect ratio.

ALT Screenshot of the 4i.app Audio Visualizer tool, with a Drop a track upload area and settings for visual type, resolution and aspect ratio.

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Background Remover cuts the subject out of any photo and hands you a clean transparent PNG, ready for cover art, press shots or thumbnails. It's free and runs in your browser, so your images never leave your device. ✂️
4i.app Background Remover page with an image drop zone and Choose image button

ALT 4i.app Background Remover page with an image drop zone and Choose image button

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Pitch Shifter moves any song or vocal up or down by semitones without changing its length, so you can transpose a track to fit your range for practice or play with voice effects. It's free and runs right in your browser, with nothing uploaded. 🎚️
4i.app Pitch Shifter tool page with an audio drop zone and a semitone pitch slider

ALT 4i.app Pitch Shifter tool page with an audio drop zone and a semitone pitch slider

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Turn a clip from your music video or rehearsal into a looping GIF with Video to GIF. Pick the frame rate and width, trim it first, and it all runs free in your browser with nothing uploaded. 🎬
4i.app Video to GIF tool page with a drop zone for MP4, MOV, AVI, WebM and MKV files

ALT 4i.app Video to GIF tool page with a drop zone for MP4, MOV, AVI, WebM and MKV files

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Stop settling for whatever the first render gives you. In 4i Director Mode your track becomes scenes timed to the lyrics and beat, and you call the shots: tweak a prompt, swap a reference image, redo just one scene. The finished video is yours. 4i.app
AI Music Video Maker, Song Generator & Free Creator Tools

AI Music Video Maker, Song Generator & Free Creator Tools

Turn any song into a music video scene by scene with 4i. Generate original songs and AI video, then polish everything with 30+ free image, video and audio tools.

4i.app
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