> ## Documentation Index
> Fetch the complete documentation index at: https://rendobar.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Keep the API key in an env var (RENDOBAR_API_KEY), never in chat or committed code.
> Job types change, so fetch the live catalog from GET https://api.rendobar.com/jobs/types rather than relying on memory.
> The full integration prompt for coding agents is at https://rendobar.com/prompts/integrate.md.

# Output reference

> Set the format, frame size, frame rate, codecs, quality and range of the single file a compose job renders.

What the render produces. One compose job renders exactly one file.

| Field | Type | What it does |
| - | - | - |
| `format` | `"mp4"` \| `"webm"` \| `"gif"` \| `"mp3"` \| `"jpg"` \| `"png"` | Output container/format. mp4=H.264+AAC, webm=VP9+Opus, gif=animated (no audio), mp3=audio only and needs no size, jpg/png=single frame. default `"mp4"`. |
| `size` | `"360p"` \| `"720p"` \| `"1080p"` \| `"1440p"` \| `"4k"` \| `"tiktok"` \| `"reels"` \| `"shorts"` \| `"instagram-story"` \| `"instagram-feed"` \| `"square"` \| `"youtube-hd"` \| `"youtube-4k"` \| `"x-landscape"` \| `"linkedin"` | Named resolution preset (dimensions only): a generic ladder ("1080p", "4k") or a platform alias ("tiktok", "reels", "youtube-4k"). An explicit `resolution` overrides this. Not used by mp3. Free renders up to 1080p at 30 fps, Pro 1440p at 30 fps, Studio 4K at 60 fps. |
| `resolution` | object | Explicit output dimensions. Wins over `size`. Every format but mp3 needs this or `size`. |
| `resolution.width` \* | integer | Output width in pixels. over 0, max 9007199254740991. |
| `resolution.height` \* | integer | Output height in pixels. over 0, max 9007199254740991. |
| `fps` | number | Output frame rate. Defaults to 30. Free renders up to 1080p at 30 fps, Pro 1440p at 30 fps, Studio 4K at 60 fps. default `30`, over 0. |
| `quality` | `"draft"` \| `"standard"` \| `"high"` \| `"max"` | Encoder quality ladder (crf + speed + audio bitrate). draft=fast preview, standard=web delivery (default), high/max=higher fidelity, slower. Explicit `crf`/`encoderPreset` override the ladder. default `"standard"`. |
| `videoCodec` | `"h264"` \| `"vp9"` | The video codec. mp4 takes h264 (default) or vp9. webm is always vp9. gif is always GIF, so it takes none. |
| `audioCodec` | `"aac"` \| `"opus"` \| `"mp3"` | The audio codec. mp4 takes aac (default), opus or mp3. webm is always opus and mp3 always mp3. |
| `crf` | integer | Advanced: constant rate factor (lower = higher quality/larger file). Overrides `quality`. h264 accepts 0-51, vp9 0-63. Does not apply to gif/mp3/jpg/png. min 0, max 63. |
| `encoderPreset` | `"ultrafast"` \| `"superfast"` \| `"veryfast"` \| `"faster"` \| `"fast"` \| `"medium"` \| `"slow"` \| `"slower"` \| `"veryslow"` | Advanced: x264 speed/compression preset (slower = smaller file, same quality). Overrides `quality`. h264 only. |
| `range` | object | Which part of the timeline to render: a preview, or one section checked without paying for the whole render. A jpg or png is the single frame at `start`, the first frame when there is no range. |
| `range.start` | number | Second of the timeline to start from. For a jpg or png, the moment captured. default `0`, min 0. |
| `range.length` | number | Seconds to render. Leave it out to run to the end. A range past the end stops at the end. A jpg or png is one frame and ignores it. over 0. |

Fields marked `*` are required. Every table on this page is generated from the schema the API validates with, so it cannot drift from what a render accepts.


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