Keep queueing video extensions while a clip is already generating.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Towsty
2026-09-02 07:04:39 -05:00
co-authored by Cursor
parent b1b005669d
commit aa2cefbcf2
4 changed files with 419 additions and 268 deletions
+54 -238
View File
@@ -1,44 +1,10 @@
import { copyFileSync, existsSync, readFileSync } from 'node:fs'
import { join } from 'node:path'
import { composeShotPrompt } from '~/utils/globalLocks'
import { composePromptParts } from '~/utils/promptParts'
import { parsePostedLoraStack, listStudioLoras, persistLoraFields, ensureComfyLoraNames } from '~/server/utils/loras'
import { existsSync } from 'node:fs'
import { addStudioJob, kickStudioQueue, listStudioJobs, videoJobsBusy } from '~/server/utils/studioQueue'
import { persistLoraFields, parsePostedLoraStack, listStudioLoras } from '~/server/utils/loras'
import { readLoraStack } from '~/utils/loras'
import { clampVideoCfg } from '~/utils/generationPresets'
import { parseExtendDuration } from '~/server/utils/extendChain'
import { defaultVideoSteps, isLtxWorkflow, LTX_DISABLED_MESSAGE, ltxWorkflowEnabled, parseVideoWorkflow } from '~/utils/videoModels'
const SAMPLERS = new Set(['res_multistep', 'euler', 'dpmpp_2m'])
const SCHEDULERS = new Set(['simple', 'ddim_uniform', 'sgm_uniform'])
function parseExtendDuration(raw: unknown) {
const seconds = Number(raw)
if (!Number.isFinite(seconds)) return 5
return Math.min(120, Math.max(0.5, Math.round(seconds * 10) / 10))
}
function frameLength(seconds: number, fps: number) {
return Math.max(5, Math.floor(seconds * fps))
}
function parseFps(raw: unknown) {
const fps = Number(raw)
return fps === 12 || fps === 30 || fps === 24 ? fps : 24
}
function parseCfg(raw: unknown, turbo: boolean) {
return clampVideoCfg(raw, turbo ? 1.5 : 4)
}
function parseSampler(raw: unknown) {
const value = String(raw || '')
return SAMPLERS.has(value) ? value : 'res_multistep'
}
function parseScheduler(raw: unknown) {
const value = String(raw || '')
return SCHEDULERS.has(value) ? value : 'simple'
}
export default defineEventHandler(async (event) => {
const body = await readBody<{ clipId?: string; prompt?: string; promptPre?: string; promptPost?: string; duration?: number; lora?: unknown; loraStack?: unknown }>(event).catch(() => ({}))
const clipId = String(body?.clipId || '').trim()
@@ -63,222 +29,72 @@ export default defineEventHandler(async (event) => {
const durationSeconds = parseExtendDuration(body?.duration)
const promptPre = String(body?.promptPre ?? source.promptPre ?? '').trim()
const promptPost = String(body?.promptPost ?? source.promptPost ?? '').trim()
const composedPrompt = composeShotPrompt({
globalLocks: source.globalLocks,
prompt: composePromptParts(promptPre, prompt, promptPost),
shotIndex: (source.chainIndex || 0) + 1,
familyRefs: source.permanenceRefs
})
const workflow = parseVideoWorkflow(source.workflow)
if (isLtxWorkflow(workflow) && !ltxWorkflowEnabled()) {
throw createError({ statusCode: 400, statusMessage: LTX_DISABLED_MESSAGE })
}
const turbo = source.turbo !== false
const fps = parseFps(source.fps)
const cfg = parseCfg(source.cfg, turbo)
const samplerName = parseSampler(source.samplerName)
const scheduler = parseScheduler(source.scheduler)
const steps = Number(source.steps || defaultVideoSteps(turbo, workflow))
const seed = Math.floor(Math.random() * 2_147_483_647)
await listStudioLoras()
const postedStack = parsePostedLoraStack(body?.loraStack ?? body?.lora, 'video')
const loraStack = postedStack.length ? postedStack : parsePostedLoraStack(readLoraStack(source), 'video')
const loraFields = persistLoraFields(loraStack)
const length = frameLength(durationSeconds, fps)
const width = source.width || 1344
const height = source.height || 768
const clipName = nextClipPartName(clipTitle(source))
const familyId = source.familyId || crypto.randomUUID()
const turbo = source.turbo !== false
const steps = Number(source.steps || defaultVideoSteps(turbo, workflow))
const seed = Math.floor(Math.random() * 2_147_483_647)
const job = createJob()
job.kind = 'video'
job.maxStep = steps
job.hideThumbnail = source.hideThumbnail
const tmpDir = extendTempDir(owner, job.id)
const part1Path = join(tmpDir, 'part1.mp4')
const framePath = join(tmpDir, 'last_frame.png')
job.library = {
const studio = await addStudioJob({
ownerKey: owner,
folderId: source.folderId,
hideThumbnail: source.hideThumbnail,
folderLocked,
name: clipName,
prompt,
promptMid: prompt,
promptPre: promptPre || undefined,
promptPost: promptPost || undefined,
aspect: source.aspect || '16:9',
width,
height,
steps,
turbo,
seed,
cfg,
fps,
samplerName,
scheduler,
duration: durationSeconds,
extendTmpDir: tmpDir,
extendPart1Path: part1Path,
extendSourceClipId: source.id,
familyId: source.familyId || crypto.randomUUID(),
parentClipId: source.id,
chainIndex: (source.chainIndex || 0) + 1,
workflow,
globalLocks: source.globalLocks,
permanenceRefs: source.permanenceRefs,
...loraFields
}
emitJob(job, { type: 'status', message: 'Extracting last frame & stitching extension...', progress: 2 })
void runExtend(job, {
sourcePath,
part1Path,
framePath,
prompt: composedPrompt,
width,
height,
steps,
seed,
turbo,
length,
cfg,
fps,
samplerName,
scheduler,
...loraFields
}).catch((error) => {
removeExtendTemp(job.library?.extendTmpDir)
const message = error instanceof Error ? error.message : String(error)
job.status = 'error'
job.error = message
emitJob(job, { type: 'error', error: message, message })
familyId,
payload: {
prompt,
promptMid: prompt,
promptPre: promptPre || undefined,
promptPost: promptPost || undefined,
name: nextClipPartName(clipTitle(source)),
folderId: source.folderId,
aspect: source.aspect || '16:9',
width: source.width || 1344,
height: source.height || 768,
steps,
turbo,
seed,
cfg: Number(source.cfg || 0),
fps: Number(source.fps || 24),
samplerName: source.samplerName || 'res_multistep',
scheduler: source.scheduler || 'simple',
duration: durationSeconds,
sound: source.sound !== false,
workflow,
useIdentityRefs: false,
hideThumbnail: source.hideThumbnail,
folderLocked,
referenceStillIds: [null, null, null, null],
extensions: [],
queueAutoRun: false,
extendFromClipId: clipId,
globalLocks: source.globalLocks,
permanenceRefs: source.permanenceRefs,
...persistLoraFields(loraStack)
}
})
await kickStudioQueue()
let latest = listStudioJobs(owner).find(item => item.id === studio.id)
if (!latest?.liveJobId && !(await videoJobsBusy())) {
await kickStudioQueue()
latest = listStudioJobs(owner).find(item => item.id === studio.id)
}
const liveJobId = latest?.liveJobId || ''
return {
jobId: job.id,
clientId: job.clientId,
jobId: liveJobId || studio.id,
studioJobId: studio.id,
queued: !liveJobId,
clientId: '',
seed,
width,
height,
width: source.width || 1344,
height: source.height || 768,
steps,
duration: durationSeconds,
hideThumbnail: source.hideThumbnail,
folderLocked
}
})
async function runExtend(
job: ReturnType<typeof createJob>,
params: {
sourcePath: string
part1Path: string
framePath: string
prompt: string
width: number
height: number
steps: number
seed: number
turbo: boolean
length: number
cfg: number
fps: number
samplerName: string
scheduler: string
loraName?: string
loraStack?: import('~/utils/loras').LoraStackItem[]
}
) {
copyFileSync(params.sourcePath, params.part1Path)
await extractLastFrame(params.sourcePath, params.framePath)
const frame = readFileSync(params.framePath)
if (!frame.length || frame.length < 64) {
throw new Error('Could not extract the last frame of the clip being extended')
}
if (job.library) job.library.thumb = undefined
const sound = await probeHasAudio(params.part1Path)
await ensureComfyReady((status) => {
emitJob(job, {
type: status.state === 'busy' ? 'busy' : 'status',
message: status.message,
progress: status.state === 'online' ? Math.max(job.progress, 3) : Math.max(job.progress, 2),
busy: status.state === 'busy',
queueRunning: status.queueRunning,
queuePending: status.queuePending
})
})
const done = watchComfyJob(job)
job.status = 'uploading'
emitJob(job, { type: 'status', message: 'Uploading last frame to ComfyUI...', progress: 4 })
const uploaded = await uploadImage({ filename: 'last_frame.png', data: frame, type: 'image/png' }, job.id)
if (job.library) {
job.library.imageName = uploaded.name
job.library.imageSubfolder = uploaded.subfolder
}
emitJob(job, { type: 'status', message: 'Queueing extension on MiniMax H3...', progress: 6 })
await waitForComfySocket(job, 4000)
await ensureComfyLoraNames('video')
const graph = buildWorkflow({
prompt: params.prompt,
imageName: uploaded.name,
width: params.width,
height: params.height,
steps: params.steps,
seed: params.seed,
turbo: params.turbo,
length: params.length,
cfg: params.cfg,
fps: params.fps,
samplerName: params.samplerName,
scheduler: params.scheduler,
filenamePrefix: comfyFilenamePrefix(),
sound,
workflow: job.library?.workflow,
duration: job.library?.duration,
loraStack: params.loraStack || job.library?.loraStack || params.loraName || job.library?.loraName
})
const queued = await queuePrompt(graph, job.clientId)
job.promptId = queued.prompt_id
job.status = 'running'
if (job.library && job.promptId) {
writePendingJob({
jobId: job.id,
promptId: job.promptId,
clientId: job.clientId,
ownerKey: job.library.ownerKey,
folderId: job.library.folderId,
hideThumbnail: job.library.hideThumbnail,
folderLocked: job.library.folderLocked,
name: job.library.name,
prompt: job.library.prompt,
aspect: job.library.aspect,
width: job.library.width,
height: job.library.height,
steps: job.library.steps,
turbo: job.library.turbo,
seed: job.library.seed,
startedAt: job.startedAt,
imageName: job.library.imageName,
imageSubfolder: job.library.imageSubfolder,
extendTmpDir: job.library.extendTmpDir,
extendPart1Path: job.library.extendPart1Path,
familyId: job.library.familyId,
parentClipId: job.library.parentClipId,
chainIndex: job.library.chainIndex,
stillId: job.library.stillId,
sound: job.library.sound,
workflow: job.library.workflow,
duration: job.library.duration,
globalLocks: job.library.globalLocks,
permanenceRefs: job.library.permanenceRefs,
loraName: job.library.loraName,
loraStack: job.library.loraStack
})
}
emitJob(job, { type: 'status', message: 'Job queued on ComfyUI', progress: 8 })
await done
}
+287
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@@ -0,0 +1,287 @@
import { copyFileSync, existsSync, readFileSync } from 'node:fs'
import { join } from 'node:path'
import { composeShotPrompt } from '~/utils/globalLocks'
import { composePromptParts } from '~/utils/promptParts'
import { parsePostedLoraStack, listStudioLoras, persistLoraFields, ensureComfyLoraNames } from '~/server/utils/loras'
import { readLoraStack } from '~/utils/loras'
import { clampVideoCfg } from '~/utils/generationPresets'
import { defaultVideoSteps, isLtxWorkflow, LTX_DISABLED_MESSAGE, ltxWorkflowEnabled, parseVideoWorkflow } from '~/utils/videoModels'
import { createJob, emitJob, type Job } from '~/server/utils/jobs'
import {
clipTitle,
clipVideoPath,
extendTempDir,
getClip,
nextClipPartName,
removeExtendTemp
} from '~/server/utils/library'
import { extractLastFrame, probeHasAudio } from '~/server/utils/ffmpeg'
import { ensureComfyReady, waitForComfySocket, watchComfyJob } from '~/server/utils/comfyLifecycle'
import { comfyFilenamePrefix, queuePrompt, uploadImage } from '~/server/utils/comfy'
import { buildWorkflow } from '~/server/utils/workflow'
import { writePendingJob } from '~/server/utils/pending'
const SAMPLERS = new Set(['res_multistep', 'euler', 'dpmpp_2m'])
const SCHEDULERS = new Set(['simple', 'ddim_uniform', 'sgm_uniform'])
export function parseExtendDuration(raw: unknown) {
const seconds = Number(raw)
if (!Number.isFinite(seconds)) return 5
return Math.min(120, Math.max(0.5, Math.round(seconds * 10) / 10))
}
function frameLength(seconds: number, fps: number) {
return Math.max(5, Math.floor(seconds * fps))
}
function parseFps(raw: unknown) {
const fps = Number(raw)
return fps === 12 || fps === 30 || fps === 24 ? fps : 24
}
function parseCfg(raw: unknown, turbo: boolean) {
return clampVideoCfg(raw, turbo ? 1.5 : 4)
}
function parseSampler(raw: unknown) {
const value = String(raw || '')
return SAMPLERS.has(value) ? value : 'res_multistep'
}
function parseScheduler(raw: unknown) {
const value = String(raw || '')
return SCHEDULERS.has(value) ? value : 'simple'
}
export async function beginExtendFromClip(params: {
ownerKey: string
clipId: string
prompt: string
promptPre?: string
promptPost?: string
duration?: number
loraStack?: unknown
folderLocked?: boolean
}) {
const source = getClip(params.ownerKey, params.clipId)
const sourcePath = clipVideoPath(params.ownerKey, source.id)
if (!existsSync(sourcePath)) {
throw createError({ statusCode: 404, statusMessage: 'Source video is missing' })
}
const prompt = String(params.prompt || '').trim()
if (!prompt) {
throw createError({ statusCode: 400, statusMessage: 'An extension prompt is required' })
}
const durationSeconds = parseExtendDuration(params.duration)
const promptPre = String(params.promptPre ?? source.promptPre ?? '').trim()
const promptPost = String(params.promptPost ?? source.promptPost ?? '').trim()
const composedPrompt = composeShotPrompt({
globalLocks: source.globalLocks,
prompt: composePromptParts(promptPre, prompt, promptPost),
shotIndex: (source.chainIndex || 0) + 1,
familyRefs: source.permanenceRefs
})
const workflow = parseVideoWorkflow(source.workflow)
if (isLtxWorkflow(workflow) && !ltxWorkflowEnabled()) {
throw createError({ statusCode: 400, statusMessage: LTX_DISABLED_MESSAGE })
}
const turbo = source.turbo !== false
const fps = parseFps(source.fps)
const cfg = parseCfg(source.cfg, turbo)
const samplerName = parseSampler(source.samplerName)
const scheduler = parseScheduler(source.scheduler)
const steps = Number(source.steps || defaultVideoSteps(turbo, workflow))
const seed = Math.floor(Math.random() * 2_147_483_647)
await listStudioLoras()
const postedStack = parsePostedLoraStack(params.loraStack, 'video')
const loraStack = postedStack.length ? postedStack : parsePostedLoraStack(readLoraStack(source), 'video')
const loraFields = persistLoraFields(loraStack)
const length = frameLength(durationSeconds, fps)
const width = source.width || 1344
const height = source.height || 768
const clipName = nextClipPartName(clipTitle(source))
const job = createJob()
job.kind = 'video'
job.maxStep = steps
job.hideThumbnail = source.hideThumbnail
const tmpDir = extendTempDir(params.ownerKey, job.id)
const part1Path = join(tmpDir, 'part1.mp4')
const framePath = join(tmpDir, 'last_frame.png')
job.library = {
ownerKey: params.ownerKey,
folderId: source.folderId,
hideThumbnail: source.hideThumbnail,
folderLocked: params.folderLocked,
name: clipName,
prompt,
promptMid: prompt,
promptPre: promptPre || undefined,
promptPost: promptPost || undefined,
aspect: source.aspect || '16:9',
width,
height,
steps,
turbo,
seed,
cfg,
fps,
samplerName,
scheduler,
duration: durationSeconds,
extendTmpDir: tmpDir,
extendPart1Path: part1Path,
extendSourceClipId: source.id,
familyId: source.familyId || crypto.randomUUID(),
parentClipId: source.id,
chainIndex: (source.chainIndex || 0) + 1,
workflow,
globalLocks: source.globalLocks,
permanenceRefs: source.permanenceRefs,
...loraFields
}
emitJob(job, { type: 'status', message: 'Extracting last frame & stitching extension...', progress: 2 })
void runExtend(job, {
sourcePath,
part1Path,
framePath,
prompt: composedPrompt,
width,
height,
steps,
seed,
turbo,
length,
cfg,
fps,
samplerName,
scheduler,
...loraFields
}).catch((error) => {
removeExtendTemp(job.library?.extendTmpDir)
const message = error instanceof Error ? error.message : String(error)
job.status = 'error'
job.error = message
emitJob(job, { type: 'error', error: message, message })
})
return job
}
async function runExtend(
job: Job,
params: {
sourcePath: string
part1Path: string
framePath: string
prompt: string
width: number
height: number
steps: number
seed: number
turbo: boolean
length: number
cfg: number
fps: number
samplerName: string
scheduler: string
loraName?: string
loraStack?: import('~/utils/loras').LoraStackItem[]
}
) {
copyFileSync(params.sourcePath, params.part1Path)
await extractLastFrame(params.sourcePath, params.framePath)
const frame = readFileSync(params.framePath)
if (!frame.length || frame.length < 64) {
throw new Error('Could not extract the last frame of the clip being extended')
}
if (job.library) job.library.thumb = undefined
const sound = await probeHasAudio(params.part1Path)
await ensureComfyReady((status) => {
emitJob(job, {
type: status.state === 'busy' ? 'busy' : 'status',
message: status.message,
progress: status.state === 'online' ? Math.max(job.progress, 3) : Math.max(job.progress, 2),
busy: status.state === 'busy',
queueRunning: status.queueRunning,
queuePending: status.queuePending
})
})
const done = watchComfyJob(job)
job.status = 'uploading'
emitJob(job, { type: 'status', message: 'Uploading last frame to ComfyUI...', progress: 4 })
const uploaded = await uploadImage({ filename: 'last_frame.png', data: frame, type: 'image/png' }, job.id)
if (job.library) {
job.library.imageName = uploaded.name
job.library.imageSubfolder = uploaded.subfolder
}
emitJob(job, { type: 'status', message: 'Queueing extension on MiniMax H3...', progress: 6 })
await waitForComfySocket(job, 4000)
await ensureComfyLoraNames('video')
const graph = buildWorkflow({
prompt: params.prompt,
imageName: uploaded.name,
width: params.width,
height: params.height,
steps: params.steps,
seed: params.seed,
turbo: params.turbo,
length: params.length,
cfg: params.cfg,
fps: params.fps,
samplerName: params.samplerName,
scheduler: params.scheduler,
filenamePrefix: comfyFilenamePrefix(),
sound,
workflow: job.library?.workflow,
duration: job.library?.duration,
loraStack: params.loraStack || job.library?.loraStack || params.loraName || job.library?.loraName
})
const queued = await queuePrompt(graph, job.clientId)
job.promptId = queued.prompt_id
job.status = 'running'
if (job.library && job.promptId) {
writePendingJob({
jobId: job.id,
promptId: job.promptId,
clientId: job.clientId,
ownerKey: job.library.ownerKey,
folderId: job.library.folderId,
hideThumbnail: job.library.hideThumbnail,
folderLocked: job.library.folderLocked,
name: job.library.name,
prompt: job.library.prompt,
aspect: job.library.aspect,
width: job.library.width,
height: job.library.height,
steps: job.library.steps,
turbo: job.library.turbo,
seed: job.library.seed,
startedAt: job.startedAt,
imageName: job.library.imageName,
imageSubfolder: job.library.imageSubfolder,
extendTmpDir: job.library.extendTmpDir,
extendPart1Path: job.library.extendPart1Path,
familyId: job.library.familyId,
parentClipId: job.library.parentClipId,
chainIndex: job.library.chainIndex,
stillId: job.library.stillId,
sound: job.library.sound,
workflow: job.library.workflow,
duration: job.library.duration,
globalLocks: job.library.globalLocks,
permanenceRefs: job.library.permanenceRefs,
loraName: job.library.loraName,
loraStack: job.library.loraStack
})
}
emitJob(job, { type: 'status', message: 'Job queued on ComfyUI', progress: 8 })
await done
}
+34
View File
@@ -66,6 +66,7 @@ export interface StudioJobPayload {
maskStillId?: string
maskStillFilename?: string
refineStrength?: number
extendFromClipId?: string
}
export interface StudioJob {
@@ -897,11 +898,44 @@ async function startStudioEditJob(item: StudioJob) {
}
}
async function startStudioExtendJob(item: StudioJob) {
let live: Job | undefined
try {
const { beginExtendFromClip } = await import('~/server/utils/extendChain')
live = await beginExtendFromClip({
ownerKey: item.ownerKey,
clipId: String(item.payload.extendFromClipId || ''),
prompt: item.payload.prompt,
promptPre: item.payload.promptPre,
promptPost: item.payload.promptPost,
duration: item.payload.duration,
loraStack: item.payload.loraStack || item.payload.loraName,
folderLocked: item.payload.folderLocked
})
await markStudioLive(item.ownerKey, item.id, live.id)
} catch (error) {
const message = error instanceof Error ? error.message : String(error)
if (live && (live.status === 'queued' || live.status === 'uploading' || live.status === 'running')) {
live.status = 'error'
live.error = message
}
await patchStudioJob(item.ownerKey, item.id, (job) => {
job.status = 'error'
job.lastError = message
}).catch(() => null)
kickStudioQueue()
}
}
export async function startStudioJob(item: StudioJob) {
if (studioJobKind(item) === 'edit') {
await startStudioEditJob(item)
return
}
if (item.payload.extendFromClipId) {
await startStudioExtendJob(item)
return
}
let live: Job | undefined
try {
const { createJob } = await import('~/server/utils/jobs')