> ## Documentation Index > Fetch the complete documentation index at: https://docs.mago.studio/llms.txt > Use this file to discover all available pages before exploring further. # Glossary # Glossary [← Quick reference](/reference/overview) *** | Term | Meaning | | ------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Project** | A body of work containing multiple shots. A project exists as long as it has at least one Shot — deleting the last Shot also deletes the project. | | **Automatic Project Naming** | New projects start named `Untitled` (or `Untitled_NN` when taken). The first video uploaded into a still-default, empty project auto-renames it to the first 10 characters of the video's filename with the extension stripped — e.g. `Project_summer_ep01.mp4` → `Project_su`. Never overrides a user-chosen name, never re-triggers once the project has content, and is skipped during onboarding. | | **Shot** | A single editable video segment within a project. The unit of rendering. Displayed as one entry in the shots panel and one row in the project timeline. | | **Render** | An output produced from a source video inside a shot. Appears as a render track. | | **Track** | A layer attached to a Shot. Two kinds: **Image Track** (the source video) and **Render Track** (a generated output). | | **Image Track** | The original uploaded video. Always present, one per Shot. Also called "source track". | | **Render track** | A generated output, stacked below the source in the shot editor. A render track can be **pinned**. | | **Iterated track** | A render produced using *Edit this Render* on a previous track. | | **Pin** | Marking a render track as the representative render for a shot, shown in the Project Timeline. Only finished render tracks can be pinned. | | **Edit this Render** | Action that uses a render as the input video for the next operation. | | **Reuse Settings** | Action that loads a track's settings into the Settings panel. | | **Project Timeline** | The full sequence of all shots in a project, shown as a horizontal timeline with a playhead, ruler, and zoom controls. Each slot shows the pinned render (or source video if none is pinned). Also called "Global Timeline" in parts of the UI. | | **Video Model** | An AI model that generates video (e.g. MagoV3, MagoV4, MagoV5, Seedance, Kling, GPT Image 2, Upscaler). | | **Credits mode** | Pay-per-render mode. Each render consumes credits based on frame count, resolution, and the selected model, with unlimited concurrent renders. The alternative to **Relaxed / Unlimited mode**. | | **Relaxed mode** | A rate-limited mode that doesn't spend credits. Provides access to Mago video models and GPT 2 image model. Concurrent renders and maximum number of frames are capped unlike in credits mode. | | **Unlimited mode** | Like **Relaxed mode**, but enables all the models and higher usage limits. | | **ControlNet** | A conditioning signal (depth, pose, SoftEdge, Canny) that constrains the model's output. | | **Context size** | Frames per chunk in long renders. | | **Context overlap** | Frames that overlap between adjacent chunks during chunked rendering. | | **Dynamic reference** | Setting that regenerates the reference image between chunks. | | **Start frame buffer** | Warm-up frames added at the start of a render to prevent flickering. | | **Auto Prompt** | Mago-generated prompt based on video and reference descriptions. | | **Descriptive prompt** | A description of the desired result. Required by Mago models. | | **Instruction prompt** | A directive to the model. Used by closed-source and image models. | | **Frame-perfect** | Property of Mago models: N input frames produce N output frames, each corresponding to a specific source frame. | | **Img2Img (Image-to-Image)** | The class of AI models used in the **Modify Frame** tab. Takes a source frame + prompt + settings and outputs an edited frame. Distinct from video-to-video rendering. Examples: GPT Image 2, Nano Banana Pro, Seedream — the full selectable list lives in the [Tooltips reference](/reference/tooltips). | | **Modify Frame** | The UI tab where users apply Img2Img models to individual frames. "Modify Frame" is the product name; "Img2Img" is the technical model category. | | **Masking** | A workflow that produces a black-and-white mask video using the SAM3 Mask model, to feed into Inpainting. | | **Inpainting** | A video model (product label: **Mago Inpaint**) that edits only the region defined by a mask video. | | **Element / Element Pair** | A reference object used by the element-swap Kling models (Kling O1 Pro, Kling 3.0 Motion Control, Kling O3 Pro). Supports two angles: a main reference image and an optional frontal image. | | **Drawn Mask** *(coming soon)* | A red mask painted by hand with a brush on a single video frame inside **Modify Frame**, telling **GPT Image 2** which region to edit. Distinct from **Masking** (the SAM3 mask *video* used by Inpainting). Until this feature is available, use the "Mask image" upload field instead. | | **Reference Frame** | An image input that acts as a style or content reference for a render. Order-independent — multiple reference frames can be added. | | **Key Frame** | An image input anchored to a specific frame index in the output, guiding the model at that exact point. | | **Preset** | Quick-start configuration that sets a model and baseline settings. | | **EXR** | OpenEXR image format. Used in professional VFX pipelines for high dynamic range and lossless compositing. | | **Denoise (Creative Upscaler)** | Strength of reconstruction during upscale. Higher means more model freedom and more added detail. | *** [← Quick reference](/reference/overview)