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npx remotion lambda render

Using the npx remotion lambda render command, you can render a video in the cloud.

The structure of a command is as follows:

npx remotion lambda render <serve-url> <composition-id> [<output-location>]
npx remotion lambda render <serve-url> <composition-id> [<output-location>]
  • The serve URL is obtained by deploying a project to Remotion using the sites create command or calling deploySite().
  • The composition ID is the id of your <Composition/>.
  • The output-location parameter is optional. If you don't specify it, the video is stored in your S3 bucket. If you specify a location, it gets downloaded to your device in an additional step.

Example commands

Rendering a video:

npx remotion lambda render https://remotionlambda-abcdef.s3.eu-central-1.amazonaws.com/sites/testbed/index.html my-comp
npx remotion lambda render https://remotionlambda-abcdef.s3.eu-central-1.amazonaws.com/sites/testbed/index.html my-comp

Rendering a video and saving it to out/video.mp4:

npx remotion lambda render https://remotionlambda-abcdef.s3.eu-central-1.amazonaws.com/sites/testbed/index.html my-comp out/video.mp4
npx remotion lambda render https://remotionlambda-abcdef.s3.eu-central-1.amazonaws.com/sites/testbed/index.html my-comp out/video.mp4

Using the shorthand serve URL:

npx remotion lambda render testbed my-comp
npx remotion lambda render testbed my-comp

Passing in input props:

npx remotion lambda render --props='{"hi": "there"}' testbed my-comp
npx remotion lambda render --props='{"hi": "there"}' testbed my-comp

Printing debug information including a CloudWatch link:

npx remotion lambda render --log=verbose testbed my-comp
npx remotion lambda render --log=verbose testbed my-comp

Keeping the output video private:

npx remotion lambda render --privacy=private testbed my-comp
npx remotion lambda render --privacy=private testbed my-comp

Rendering only the audio:

npx remotion lambda render --codec=mp3 testbed my-comp
npx remotion lambda render --codec=mp3 testbed my-comp

Flags

--region

The AWS region to select. Both project and function should be in this region.

--props

React Props to pass to the root component of your video. Must be a serialized JSON string (--props='{"hello": "world"}') or a path to a JSON file (./path/to/props.json).

--log

Log level to be used inside the Lambda function. Also, if you set it to verbose, a link to CloudWatch will be printed where you can inspect logs.

--privacy

Defines if the output media is accessible for everyone or not. Either public or private, default public.

--max-retries

How many times a single chunk is being retried if it fails to render. Default 1.

--frames-per-lambda

How many frames should be rendered in a single Lambda function. Increase it to require less Lambda functions to render the video, decrease it to make the render faster.

Default value: Dependant on video length
Minimum value: 4

note

The framesPerLambda parameter cannot result in more than 200 functions being spawned. See: Concurrency

--quality

Value between 0 and 100 for JPEG rendering quality. Doesn't work when PNG frames are rendered.

--codec

h264 or h265 or png or vp8 or vp9 or mp3 or aac or wav or prores or h264-mkv. If you don't supply --codec, it will use h264-mkv.

--prores-profile

Set the ProRes profile. This option is only valid if the codec has been set to prores. Possible values: 4444-xq, 4444, hq, standard, light, proxy. See here for explanation of possible values. Default: hq.

--crf

To set Constant Rate Factor (CRF) of the output. Minimum 0. Use this rate control mode if you want to keep the best quality and care less about the file size.

--pixel-format

Set a custom pixel format. See here for available values.

--image-format

jpeg or png - JPEG is faster, but doesn't support transparency. The default image format is jpeg.

--scale

Scales the output frames by the factor you pass in. For example, a 1280x720px frame will become a 1920x1080px frame with a scale factor of 1.5. Vector elements like fonts and HTML markups will be rendered with extra details.

--env-file

Specify a location for a dotenv file. Default .env.

--frames

Render a subset of a video. Example: --frames=0-9 to select the first 10 frames. To render a still, use the still command.

--out-name

The file name of the media output as stored in the S3 bucket. By default, it is out plus the appropriate file extension, for example: out.mp4. Must match /([0-9a-zA-Z-!_.*'()]+)/g.