MOVINdow
MOVINdow — play multiple videos at the same time, in sync
Touch, move, and shape multiple videos while they stay in sync.
MOVINdow is a free iPhone, iPad, and Mac app that plays any number of videos simultaneously — all synchronized, with no preset limit (within your device's available memory). Step through footage frame by frame from 1/1000 of a second, create stroboscopic motion-trail videos, and fragment a playing video into independent moving pieces with patented real-time technology. Processing runs on-device; MOVINdow itself uploads nothing. No login, no ads.
What can MOVINdow do?
- Play any number of videos at once, in sync — compare angles side by side, with simultaneous fast-forward, rewind, and per-video volume control.
- Frame-by-frame from 1/1000 second — advance or rewind several videos together, one frame at a time.
- Move, zoom & rotate while playing — drag, pinch, and rotate each video in 2D, 3D, and 360°.
- Motion Trails — overlay the phases of a movement into a single stroboscopic-style video. Learn more
- Real-time video fragmentation (patented) — draw across a playing video to split it into independent, synchronized pieces. Learn more
- Editing tools — trim from 1/100s, crop (rectangle, triangle, circle, freehand, face-detection auto-crop), semi-transparent video, screen recording.
Who is it for?
Athletes & coaches
Compare form across angles or sessions, frame by frame. Baseball, golf, tennis, football, ski, dance and more. Sports video analysis →
Video creators
Motion trails, fragment effects, and multi-video compositions no other tool can replicate. Fragmentation →
Anyone comparing videos
Watch several clips side by side in sync — reviews, reactions, study, product comparisons.
Watch two videos at once — side by side, split screen, or video-in-video
Looking for a split-screen or dual video player? MOVINdow plays two videos side by side — or many more — all in sync. Unlike picture-in-picture, which floats one small video over another app, MOVINdow gives every video its own movable, zoomable window inside one player: video in video.
FAQ
- Can I play multiple videos at the same time on iPhone?
- Yes — with no preset limit (within your device's available memory), all synchronized, each freely movable and zoomable while playing.
- Can I watch two videos side by side (split screen) on iPhone?
- Yes. Open two videos in MOVINdow and arrange them side by side, stacked, or freely — both play in sync, and each can be moved and zoomed while playing.
- Is this the same as picture-in-picture?
- No. Picture-in-picture floats one video over another app. MOVINdow plays multiple videos inside one player — each is its own movable, zoomable window: video in video.
- Is MOVINdow free?
- Yes, currently free with all features, no login, and no ads. Sample videos are included.
- Does it upload my videos to the cloud?
- No. MOVINdow itself does not upload your videos; processing runs on-device. Your photo library may sync with iCloud according to your device settings.
- What happens to the audio when multiple videos play at once?
- You choose: play audio from the video you tap, play audio from all videos together, or lock audio to one video.
- Which devices are supported?
- iPhone and iPad (iOS/iPadOS 17.6+) via MOVINdow Multi Video Player, and Mac via MOVINdow : Multi Video Player.
- Is the technology patented?
- Yes — US 10275133, Japan 6754968 & 7734894, China ZL201680005776X, with additional patents pending.