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Give video extensions the same pre-text, prompt, and post-text fields as the main form.

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Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Towsty
2026-09-02 15:01:20 -05:00
co-authored by Cursor
parent c4e18eeb2c
commit e7298d9693
11 changed files with 195 additions and 83 deletions
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server/api/extend.post.ts
+12 -7
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@@ -4,6 +4,7 @@ import { persistLoraFields, parsePostedLoraStack, listStudioLoras } from '~/serv
import { readLoraStack } from '~/utils/loras'
import { parseExtendDuration } from '~/server/utils/extendChain'
import { defaultVideoSteps, isLtxWorkflow, LTX_DISABLED_MESSAGE, ltxWorkflowEnabled, parseVideoWorkflow } from '~/utils/videoModels'
import { composePromptParts } from '~/utils/promptParts'
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(() => ({}))
@@ -12,9 +13,6 @@ export default defineEventHandler(async (event) => {
if (!clipId) {
throw createError({ statusCode: 400, statusMessage: 'A clip is required to extend' })
}
if (!prompt) {
throw createError({ statusCode: 400, statusMessage: 'An extension prompt is required' })
}
const { owner } = assertLibraryOwner(event)
const source = getClip(owner, clipId)
@@ -27,8 +25,15 @@ export default defineEventHandler(async (event) => {
const destFolder = publicLibrary(event).folders.find(folder => folder.id === source.folderId)
const folderLocked = Boolean(destFolder?.protected && !destFolder.unlocked)
const durationSeconds = parseExtendDuration(body?.duration)
const promptPre = String(body?.promptPre ?? source.promptPre ?? '').trim()
const promptPost = String(body?.promptPost ?? source.promptPost ?? '').trim()
const promptPre = body && Object.prototype.hasOwnProperty.call(body, 'promptPre')
? String(body.promptPre || '').trim()
: String(source.promptPre || '').trim()
const promptPost = body && Object.prototype.hasOwnProperty.call(body, 'promptPost')
? String(body.promptPost || '').trim()
: String(source.promptPost || '').trim()
if (!composePromptParts(promptPre, prompt, promptPost)) {
throw createError({ statusCode: 400, statusMessage: 'An extension prompt is required' })
}
const workflow = parseVideoWorkflow(source.workflow)
if (isLtxWorkflow(workflow) && !ltxWorkflowEnabled()) {
throw createError({ statusCode: 400, statusMessage: LTX_DISABLED_MESSAGE })
@@ -47,8 +52,8 @@ export default defineEventHandler(async (event) => {
payload: {
prompt,
promptMid: prompt,
promptPre: promptPre || undefined,
promptPost: promptPost || undefined,
promptPre,
promptPost,
name: nextClipPartName(clipTitle(source)),
folderId: source.folderId,
aspect: source.aspect || '16:9',