VfxApply Presets Documentation

Preset keys

Common keys

| Key | Type | Description |------.------------|----------------|------------------------------------------- | preset/name | String | A description string for this preset | preset/group | String|Null | Logical grouping | preset/plugin | String | The id of the plugin this preset is for | preset/props | Array | Properties used by the plugin | preset/params | Array|Null | Parameters for tweaking

Properties

ffmpeg

Property	Type	Description
`filter`	String	The filter string, with optional param placeholders
`extra`	*String	Null*
`type`	*Enum	Null*

natron

| Property | Type | Description |------.------------|--------------------|------------------------------------------- | project | String | Natron project file name | input | String|Int|Null | Extra options to pass on the ffmpeg command line | output | String|Int|Null | ffmpeg filter type; One of complex, audio or video | framescale | Float | Ratio of output frames to input files, 2.0=twice as many out as in=half speed

executor

| Property | Type | Description |------.------------|--------------------|------------------------------------------- | set | Array | Define variables | script | Array | Define commands | set/%/value | String | Set variable % to value. | set/%/escape | Bool | If true, the resulting vriable will be escaped | script/%/info | String | Info about what this step is doing | script/%/exec | String | Command to execute | script/%/parse | Map | Parse output from command, see docs for plugin

Parameters

All parameters must specify label and type. The remaining keys are depending on the type of parameter.

float

Float parameters need to specify min, max, default and optionally step.

Examples

ffmpeg

preset:
    name:   Normalize audio level
    group:  ffmpeg/audio
    plugin: ffmpeg
    props:
        filter: "dynaudnorm=m={maxgain}:s={compress}"
        extra: "-c:v copy"
        type: complex
    params:
        compress:   { label:"Compression factor", type:float, min:0.0, max:30.0, default:0.0 }
        maxgain:    { label:"Max gain factor", type:float, min:0.0, max:100.0, default:10.0 }

natron

preset:
    name:   Apply a CCTV look to the video
    group:  natron
    plugin: natron
    props:
        project: natron-cctv.ntp
        reader: Reader1
        writer: Writer1

executor

preset:
    name: Stabilize video clip (two-pass)
    group: video
    plugin: executor
    props:
        set:
            inputtrf: { value:"{%uinput}.trf", escape:true }
        script:
            analyze:
                info: Getting stabilization vectors
                exec: "transcode -i {%input} -J stabilize"
                parse:
                    from: 'stderr'
                    regex: '/encoding frames \[0-([0-9]+?)\],\s+([0-9\.]+?) fps/'
                    frame:1
                    eta:2
            stabilize:
                info: Stabilizing video
                exec: "transcode -i {%input} -o {%output} -J transform -y xvid"
                parse:
                    from: 'stderr'
                    regex: '/encoding frames \[0-([0-9]+?)\],\s+([0-9\.]+?) fps/'
                    frame:1
                    eta:2
            cleanup:
                exec: "rm {%inputtrf}"

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