# Green Screen

Try out this capability in Bria's sandbox


Description
Initiates an asynchronous job that detects the video background and replaces it with a solid green (or blue) screen, producing a chroma-key-ready output for downstream compositing tools.


Response behavior:

- Returns HTTP 202 with request_id and status_url

- Check job status by polling status_url or by calling the Status Service with the request_id until a terminal status is returned


Supported input containers:

- .mp4, .mov, .webm, .avi, .gif


Supported input codecs:

- H.264, H.265 (HEVC), VP9, AV1, PhotoJPEG


Input attributes preserved in output:

- Aspect Ratio and resolution

- Frame Rate

- Audio if present and preserve_audio is true


Limits:

- Max input duration: 60 seconds

- Resolutions: Input resolution up to 16000x16000 (16K). Inputs larger than this return 413 Payload Too Large. Output resolution matches the input resolution.


Green shade selection:

- broadcast_green (#00B140) - industry standard for professional pipelines. Default.

- chroma_green (#00FF00) - works with consumer editors.

- blue_screen (#0000FF) - use when the subject wears green.


Output transparency:

- Output is fully opaque (no alpha channel needed). mp4_h264 is recommended for broad editor compatibility.

Endpoint: POST /green_screen

## Header parameters:

  - `api_token` (string, required)

## Request fields (application/json):

  - `video` (string, required)
    Publicly accessible URL of the input video. Input resolution supported up to 16000x16000 (16K)

  - `green_shade` (string)
    Predefined screen color. broadcast_green (#00B140) is the industry standard for professional pipelines. chroma_green (#00FF00) works with consumer editors. blue_screen (#0000FF) is used when the subject wears green.
    Enum: "broadcast_green", "chroma_green", "blue_screen"

  - `output_container_and_codec` (string)
    Output container and codec preset. Alpha is not needed for green screen output; mp4_h264 is recommended for broad editor compatibility.
    Enum: "mp4_h264", "mp4_h265", "webm_vp9", "mov_h265", "mov_proresks", "mkv_h264", "mkv_h265", "mkv_vp9", "gif"

  - `preserve_audio` (boolean)

## Response 202 fields (application/json):

  - `request_id` (string, required)

  - `status_url` (string, required)

## Response 400 fields (application/json):

  - `error` (object, required)

  - `error.code` (integer, required)
    Example: 123

  - `error.message` (string, required)

  - `error.details` (string, required)

  - `request_id` (string, required)