StochasticGrain vs Video Thing

Unlike simple noise overlays, this app uses a physics-based approach where grain density responds to image brightness, just like analog film. Shadows show more grain, highlights stay cleaner. The result feels organic rather than digital. Built on academic research by Newson, Delon, and Galerne (2017) modeling stochastic film grain through Boolean models, with real-time optimizations informed by Zhang et al.'s 2023 SIGGRAPH work. These papers describe how actual silver halide crystals distribute in photographic emulsion. Exposure-dependent grain that responds to image luminance Real-time preview as you adjust Designed for film photography enthusiasts A passion project for anyone who appreciates the texture of analog photography.

Video Thing mixes four videos live on your iPhone. No timeline, no clip list to manage. You perform the video with your hands, hit record when it looks the way you want, and save it to your camera roll. Load a video from your Photos into any bay, aim your camera at what's in front of you, or drop in a live signal generator. Four bays, four sources, in any combination. Each channel has its own video fader and audio fader, plus mute, solo, hide, and spot buttons. Eight blend modes to pick from — normal, screen, lighten, darken, multiply, difference, XOR, and add-wrap. Effects like color, glitch, mirror, freeze, and a matte you can draw with your finger, plus feedback loops with a Droste spiral. A luma key to drop black, a noise generator when you need one. Video Thing can react to audio too. Wire the low, mid, or high frequency band — or the master level — into any effect parameter. The picture moves with the music. Everything's live. Drag the divider to grow the monitor. Tap the picture for fullscreen. Double-tap any knob to reset it. Hit record and the whole mix saves straight to your camera roll as an mp4, in the same aspect as your source clip.