make the noise less intense by default

src/production/postInterpolation.mts

@@ -5,7 +5,7 @@ import tmpDir from "temp-dir"
 import ffmpeg from "fluent-ffmpeg"
 import { moveFileFromTmpToPending } from "../utils/moveFileFromTmpToPending.mts"
 
-export const postInterpolation = async (fileName: string, durationMs: number, nbFrames: number): Promise<string> => {
+export const postInterpolation = async (fileName: string, durationMs: number, nbFrames: number, noiseAmount: number): Promise<string> => {
   return new Promise((resolve,reject) => {
 
     const tmpFileName = `${uuidv4()}.mp4`
@@ -37,7 +37,7 @@ export const postInterpolation = async (fileName: string, durationMs: number, nb
         `setpts=${durationRatio}*PTS`, // we make the video faster
         //'scale=-1:576:lanczos',
         // 'unsharp=5:5:0.2:5:5:0.2', // not recommended, this make the video more "pixely"
-        'noise=c0s=10:c0f=t+u' // add a movie grain noise
+        `noise=c0s=${noiseAmount}:c0f=t+u` // add a movie grain noise
       ])
       .outputOptions([
         `-r ${nbFrames}`,

src/types.mts

@@ -122,6 +122,7 @@ export interface VideoShotMeta {
 
   seed: number
   noise: boolean // add movie noise
+  noiseAmount: number // noise strength (default is 2, and 10 is very visible)
 
   durationMs: number // in milliseconds
   steps: number
@@ -187,6 +188,7 @@ export interface VideoSequenceMeta {
   seed: number
 
   noise: boolean // add movie noise
+  noiseAmount: number // noise strength (default is 2, and 10 is very visible)
 
   steps: number // between 10 and 50
 

src/utils/parseShotRequest.mts

@@ -37,6 +37,7 @@ export const parseShotRequest = async (sequence: VideoSequence, maybeShotMeta: P
 
     // a video sequence SHOULD HAVE a consistent grain
     noise: sequence.noise,
+    noiseAmount: sequence.noiseAmount,
 
     // a video sequence CAN HAVE inconsistent scene duration, like in any real movie
     durationMs: getValidNumber(maybeShotMeta.durationMs, 0, 6000, 3000),

src/utils/parseVideoRequest.mts

@@ -67,6 +67,7 @@ export const parseVideoRequest = async (request: VideoTaskRequest): Promise<Vide
     seed: getValidNumber(request.sequence.seed, 0, 4294967295, generateSeed()),
 
     noise: request.sequence.noise === true,
+    noiseAmount: request.sequence.noise === true ? 2 : 0,
 
     steps: getValidNumber(request.sequence.steps, 10, 50, 45),