Build one chain for a video: picture steps run on every frame and sound steps run on the soundtrack. Preview both together, then export a file with the picture and the sound processed in one pass.
Picture steps
Picture steps are the image workflow’s adjustments and effects, applied to every frame in order. Grain, VHS damage, CRT static, and night-vision noise are seeded from each frame’s timestamp, so they move from frame to frame like real noise, and the same frame always gets the same pattern.
The preview draws the processed picture at up to 720 pixels on the long side while the video plays. The export renders at the chosen output size, 720p by default, spreading the frames across the processor’s cores.
Sound steps
Sound steps are the audio workflow’s adjustments and effects, run on the soundtrack as one signal path. Playback runs the same chain live, so an equalizer or a reverb can be tuned while the picture plays with it.
The export renders the soundtrack through the same processor. Any delay a step adds is removed at the start and flushed at the end, so the sound stays aligned with the picture and the file keeps its length.
Presets pair a look with a sound
A preset fills the whole chain. Silent Reel pairs scratched black and white with a 78 rpm record; Security Feed pairs a wide-angle grayscale picture with a small compressed microphone. Two presets fix footage rather than style it: Dive Footage Fix restores the red that water absorbs, and Interview Cleanup leaves the picture alone and levels a talking-head recording. Applying a preset replaces the current steps, and every step stays editable afterward.
Untouched streams are copied
A stream with no steps is not re-encoded. With no picture steps, the video stream is copied into the export as it was encoded, which takes about as long as reading the file and loses nothing. With no sound steps, the soundtrack is copied when the output container supports its codec.
Step order
Picture steps sit above sound steps, and each group runs top to bottom. Grain after a gradient map takes the palette’s colors, while grain before it is mapped along with the picture. For sound, the audio workflow’s rule applies: put the limiter last. Drag a step by its grip to move it, or focus the grip and use the arrow keys. A step dragged past the other group returns to the edge of its own.
Links and saved presets
Copy link writes the chain into the URL: picture steps in ?chain=, in the image workflow’s format, and sound steps in ?sound=, in the audio workflow’s. Save stores the current chain as a preset in this browser.