增加即梦图片5.0和视频2.5的能力

lib/server/app-settings.ts

@@ -10,6 +10,9 @@ import { getVisualClientConfig } from "@/lib/volcengine/visual-client";
 import type { EnabledImageCapability } from "@/lib/types";
 import { getBailianConfig } from "@/lib/bailian/client";
 
+type SettingsImageCreationEngine = ImageCreationEngine | "seedream";
+const SEEDREAM_50_PRO_MODEL = "doubao-seedream-5-0-pro-260628";
+
 export type SettingsField = {
   key: string;
   label: string;
@@ -112,8 +115,8 @@ const settingDefinitions: Array<{
   },
   {
     id: "seedance",
-    title: "Seedance 视频 API",
-    description: "只需填写火山方舟 API Key；Base URL、模型和默认参数使用系统默认值。",
+    title: "火山方舟 API",
+    description: "Seedance 视频与 Seedream 5.0 Pro 图片共用此 API Key；其余参数使用系统默认值。",
     fields: [
       { key: "SEEDANCE_API_KEY", label: "方舟 API Key", secret: true, type: "password" }
     ]
@@ -151,6 +154,7 @@ const engineFieldDefinitions: FieldDefinition[] = [
     defaultValue: "jimeng",
     options: [
       { label: "即梦 / 火山视觉", value: "jimeng" },
+      { label: "Seedream 5.0 Pro / 火山方舟", value: "seedream" },
       { label: "EvoLink GPT Image 2", value: "evolink" },
       { label: "阿里云百炼 Wan 2.7", value: "bailian" }
     ]
@@ -193,6 +197,7 @@ export async function getApiSettings() {
       visual: Boolean(getVisualClientConfig()),
       evolink: Boolean(getEvolinkImageConfig()),
       seedance: Boolean(seedance.apiKey),
+      seedream: Boolean(seedance.apiKey),
       bailian: Boolean(getBailianConfig().apiKey),
       auth: authConfigSummary(auth) === "configured",
       organization: platformAccountStoreConfigured()
@@ -258,7 +263,7 @@ function buildEngineAssignments(fileEnv: Map<string, string>): EngineAssignment[
       capability: "image.generate",
       label: "图片生成",
       engine: generateEngine,
-      reqKey: generateEngine === "bailian" ? bailian.imageModel : generateEngine === "evolink" ? evolink.model : capabilities["image.generate"].reqKey,
+      reqKey: generateEngine === "bailian" ? bailian.imageModel : generateEngine === "evolink" ? evolink.model : generateEngine === "seedream" ? SEEDREAM_50_PRO_MODEL : capabilities["image.generate"].reqKey,
       field: engineFieldDefinitions[0],
       fileEnv
     }),
@@ -279,7 +284,7 @@ function buildEngineAssignments(fileEnv: Map<string, string>): EngineAssignment[
 function imageEngineAssignment(input: {
   capability: EnabledImageCapability;
   label: string;
-  engine: ImageCreationEngine;
+  engine: SettingsImageCreationEngine;
   reqKey: string;
   field: FieldDefinition;
   fileEnv: Map<string, string>;
@@ -298,7 +303,7 @@ function imageEngineAssignment(input: {
   };
 }
 
-function currentEngineValue(field: FieldDefinition, fileEnv: Map<string, string>): ImageCreationEngine {
+function currentEngineValue(field: FieldDefinition, fileEnv: Map<string, string>): SettingsImageCreationEngine {
   const explicit = process.env[field.key] ?? fileEnv.get(field.key);
   if (explicit) return normalizeImageEngine(explicit);
   return normalizeImageEngine(process.env.IMAGE_CREATION_ENGINE ?? fileEnv.get("IMAGE_CREATION_ENGINE") ?? process.env.IMAGE_PROVIDER ?? fileEnv.get("IMAGE_PROVIDER") ?? field.defaultValue);
@@ -316,16 +321,18 @@ function isConfigured(key: string, fileEnv: Map<string, string>) {
   return Boolean(process.env[key] ?? fileEnv.get(key));
 }
 
-function normalizeImageEngine(value: string | undefined): ImageCreationEngine {
+function normalizeImageEngine(value: string | undefined): SettingsImageCreationEngine {
   const normalized = value?.trim().toLowerCase();
+  if (normalized === "seedream") return "seedream";
   return normalized === "evolink" || normalized === "bailian" ? normalized : "jimeng";
 }
 
-function imageEngineLabel(engine: ImageCreationEngine) {
-  return engine === "evolink" ? "EvoLink" : engine === "bailian" ? "阿里云百炼" : "即梦";
+function imageEngineLabel(engine: SettingsImageCreationEngine) {
+  return engine === "evolink" ? "EvoLink" : engine === "bailian" ? "阿里云百炼" : engine === "seedream" ? "Seedream 5.0 Pro" : "即梦";
 }
 
-function imageEngineConnected(engine: ImageCreationEngine) {
+function imageEngineConnected(engine: SettingsImageCreationEngine) {
+  if (engine === "seedream") return Boolean(getSeedanceConfig().apiKey);
   if (engine === "evolink") return Boolean(getEvolinkImageConfig());
   if (engine === "bailian") return Boolean(getBailianConfig().apiKey);
   return Boolean(getVisualClientConfig());

lib/server/billing-catalog.ts

@@ -8,13 +8,28 @@ import type { BillingPriceRule } from "@/lib/types";
 
 export const BILLING_USD_CNY_RATE = 7.2;
 export const DEFAULT_BILLING_MARKUP_MULTIPLIER = 1.2;
-export const BILLING_CATALOG_OBSERVED_AT = "2026-08-11";
+export const BILLING_CATALOG_OBSERVED_AT = "2026-08-21";
 
 const BAILIAN_IMAGE_URL = "https://help.aliyun.com/zh/model-studio/wan2-7-image-pro";
 const BAILIAN_VIDEO_URL = "https://help.aliyun.com/zh/model-studio/wan2-7-i2v";
 const EVOLINK_IMAGE_URL = "https://evolink.ai/zh/gpt-image-2";
 const VOLC_ARK_PRICING_URL = "https://www.volcengine.com/docs/82379/1544106?lang=zh";
 const JIMENG_PRICING_URL = "https://www.volcengine.com/activity/jimeng";
+const SEEDREAM_PRICING_URL = "https://docs.volcengine.com/docs/82379/1544106?lang=zh";
+
+const SEEDREAM_50_PRO_DIMENSIONS = [
+  {
+    key: "size",
+    label: "分辨率",
+    baselineValue: "1.5K",
+    defaultValue: "1.5K",
+    tiers: [
+      { value: "1K", label: "1K", standardFactor: 1, markupMultiplier: DEFAULT_BILLING_MARKUP_MULTIPLIER, enabled: true },
+      { value: "1.5K", label: "1.5K", standardFactor: 1, markupMultiplier: DEFAULT_BILLING_MARKUP_MULTIPLIER, enabled: true },
+      { value: "2K", label: "2K", standardFactor: 2, markupMultiplier: DEFAULT_BILLING_MARKUP_MULTIPLIER, enabled: true }
+    ]
+  }
+] satisfies NonNullable<BillingPriceRuleInput["parameterDimensions"]>;
 
 const EVOLINK_GPT_IMAGE_DIMENSIONS = [
   {
@@ -123,6 +138,25 @@ export const DEFAULT_BILLING_PRICE_RULES: BillingPriceRuleInput[] = [
       observedAt: BILLING_CATALOG_OBSERVED_AT
     }
   },
+  {
+    id: "base-seedream-5-0-pro",
+    provider: "seedream",
+    capability: "image.generate",
+    reqKey: "doubao-seedream-5-0-pro-260628",
+    unit: "image",
+    standardUnitPriceFen: 30,
+    markupMultiplier: DEFAULT_BILLING_MARKUP_MULTIPLIER,
+    enabled: true,
+    note: "基础生图：1K/1.5K ¥0.30，2K ¥0.60；首张输入图免费，额外输入图 ¥0.02/张。",
+    parameterDimensions: SEEDREAM_50_PRO_DIMENSIONS,
+    source: {
+      url: SEEDREAM_PRICING_URL,
+      currency: "CNY",
+      unitPrice: 0.3,
+      basis: "Seedream 5.0 Pro 单图基础生图；2K 按 ¥0.60/张，额外参考图按 ¥0.02/张",
+      observedAt: BILLING_CATALOG_OBSERVED_AT
+    }
+  },
   {
     id: "base-bailian-wan27-i2v-720p",
     provider: "bailian",
@@ -236,6 +270,63 @@ export const DEFAULT_BILLING_PRICE_RULES: BillingPriceRuleInput[] = [
       basis: "doubao-seedance-2.0，4K，无输入视频、16:9、5 秒示例折算；实际 token 计费可能随输入变化",
       observedAt: BILLING_CATALOG_OBSERVED_AT
     }
+  },
+  {
+    id: "base-seedance-2-5-480p",
+    provider: "seedance",
+    capability: "video.generate",
+    reqKey: "doubao-seedance-2-5-260628",
+    variantKey: "resolution=480p",
+    unit: "video_second",
+    standardUnitPriceFen: 67,
+    markupMultiplier: DEFAULT_BILLING_MARKUP_MULTIPLIER,
+    enabled: true,
+    note: "官方 5 秒、16:9、无输入视频样例 ¥3.36，实际按方舟 token 用量结算。",
+    source: {
+      url: `${VOLC_ARK_PRICING_URL}#sd25_price`,
+      currency: "CNY",
+      unitPrice: 0.67,
+      basis: "doubao-seedance-2.5，480P，无输入视频、16:9、5 秒示例折算",
+      observedAt: BILLING_CATALOG_OBSERVED_AT
+    }
+  },
+  {
+    id: "base-seedance-2-5-720p",
+    provider: "seedance",
+    capability: "video.generate",
+    reqKey: "doubao-seedance-2-5-260628",
+    variantKey: "resolution=720p",
+    unit: "video_second",
+    standardUnitPriceFen: 151,
+    markupMultiplier: DEFAULT_BILLING_MARKUP_MULTIPLIER,
+    enabled: true,
+    note: "官方 5 秒、16:9、无输入视频样例 ¥7.56，实际按方舟 token 用量结算。",
+    source: {
+      url: `${VOLC_ARK_PRICING_URL}#sd25_price`,
+      currency: "CNY",
+      unitPrice: 1.51,
+      basis: "doubao-seedance-2.5，720P，无输入视频、16:9、5 秒示例折算",
+      observedAt: BILLING_CATALOG_OBSERVED_AT
+    }
+  },
+  {
+    id: "base-seedance-2-5-1080p",
+    provider: "seedance",
+    capability: "video.generate",
+    reqKey: "doubao-seedance-2-5-260628",
+    variantKey: "resolution=1080p",
+    unit: "video_second",
+    standardUnitPriceFen: 374,
+    markupMultiplier: DEFAULT_BILLING_MARKUP_MULTIPLIER,
+    enabled: true,
+    note: "官方 5 秒、16:9、无输入视频样例 ¥18.71，实际按方舟 token 用量结算。",
+    source: {
+      url: `${VOLC_ARK_PRICING_URL}#sd25_price`,
+      currency: "CNY",
+      unitPrice: 3.74,
+      basis: "doubao-seedance-2.5，1080P，无输入视频、16:9、5 秒示例折算",
+      observedAt: BILLING_CATALOG_OBSERVED_AT
+    }
   }
 ];
 

lib/server/billing-service.ts

@@ -15,6 +15,8 @@ import {
   seedanceTokenPriceFenPerMillion
 } from "@/lib/server/seedance-billing";
 import { getGenerationJob, updateGenerationJob } from "@/lib/server/data-store";
+import { SEEDANCE_20_MODEL, SEEDANCE_25_MODEL } from "@/lib/video-settings";
+import { calculateSeedreamAmountFen, SEEDREAM_50_PRO_MODEL } from "@/lib/server/seedream-billing";
 import type {
   BillingAccountConfig,
   BillingConditionValue,
@@ -81,17 +83,34 @@ export async function quoteGenerationCharge(input: BillingGenerationInput): Prom
     status: "pending",
     quotaExempt: quotaExempt || undefined
   };
-  if (input.provider !== "seedance" || input.reqKey !== "doubao-seedance-2-0-260128") {
+  if (input.provider === "seedream" && input.reqKey === SEEDREAM_50_PRO_MODEL) {
+    const referenceImageCount = Math.ceil(Number(parameters.referenceImageCount) || 0);
+    return {
+      ...quote,
+      amountFen: calculateSeedreamAmountFen({
+        outputPriceFen: quote.standardUnitPriceFen,
+        referenceImageCount,
+        markupMultiplier: quote.markupMultiplier
+      }),
+      parameters: {
+        ...quote.parameters,
+        referenceImageCount,
+        inputReferencePriceFen: Math.max(0, referenceImageCount - 1) * 2
+      }
+    };
+  }
+  if (input.provider !== "seedance" || !isSeedanceBillingModel(input.reqKey)) {
     return quote;
   }
 
   const inputVideo = requestHasInputVideo(input.requestPayload);
   const estimatedAmountFen = estimateSeedanceAmountFen({
+    model: input.reqKey,
     resolution: parameters.resolution,
     aspectRatio: parameters.aspectRatio,
     outputDurationSeconds: quantity,
     inputVideo,
-    inputVideoDurationSeconds: requestInputVideoDurationSeconds(input.requestPayload),
+    inputVideoDurationSeconds: requestInputVideoDurationSeconds(input.requestPayload, input.reqKey),
     markupMultiplier: quote.markupMultiplier
   });
   const reservedAmountFen = Math.max(quote.amountFen, estimatedAmountFen);
@@ -202,6 +221,7 @@ export async function settleSeedanceGenerationCharge(
   const inputVideo = requestHasInputVideo(job.requestPayload);
   const resolution = billing.parameters?.resolution;
   const actualAmountFen = calculateSeedanceActualAmountFen({
+    model: job.reqKey,
     resolution,
     inputVideo,
     completionTokens: Number(completionTokens),
@@ -226,7 +246,8 @@ export async function settleSeedanceGenerationCharge(
         actualAmountFen,
         completionTokens: Math.floor(Number(completionTokens)),
         inputVideo,
-        resolution: String(resolution || "720p")
+        resolution: String(resolution || "720p"),
+        model: job.reqKey
       }
     });
     settlementLedgerEntryId = settlement.entry.id;
@@ -244,12 +265,17 @@ export async function settleSeedanceGenerationCharge(
         completionTokens: Math.floor(Number(completionTokens)),
         resolution: String(resolution || "720p"),
         inputVideo,
-        tokenPriceFenPerMillion: seedanceTokenPriceFenPerMillion(resolution, inputVideo)
+        model: job.reqKey,
+        tokenPriceFenPerMillion: seedanceTokenPriceFenPerMillion(job.reqKey, resolution, inputVideo)
       }
     }
   });
 }
 
+function isSeedanceBillingModel(model: string) {
+  return model === SEEDANCE_20_MODEL || model === SEEDANCE_25_MODEL;
+}
+
 export async function getOrganizationBillingSnapshot(organizationId: string) {
   const wallet = await getOrganizationWallet(organizationId);
   return {
@@ -385,6 +411,7 @@ export function normalizeBillingParameters(requestPayload: Record<string, unknow
     input?.resolution
   ), normalizeTextParameter);
   setParameter(parameters, "size", firstValue(
+    settings?.size,
     providerPayload?.size,
     providerParameters?.size,
     inputSettings?.size,
@@ -423,6 +450,7 @@ export function normalizeBillingParameters(requestPayload: Record<string, unknow
   ), numberParameter);
 
   const imageCount = numberParameter(firstValue(
+    settings?.imageCount,
     providerPayload?.n,
     providerParameters?.n,
     input?.n,
@@ -526,11 +554,14 @@ function countReferenceImages(input: {
   assembled?: Record<string, unknown>;
 }): number {
   const urls = [
+    ...stringArray(input.requestPayload.imageUrls),
+    ...stringArray(input.requestPayload.inputUrls),
     ...stringArray(input.input?.imageUrls),
     ...stringArray(input.providerPayload?.image_urls),
     ...stringArray(input.providerPayload?.imageUrls)
   ];
   const materials = [
+    ...(Array.isArray(input.requestPayload.materials) ? input.requestPayload.materials : []),
     ...(Array.isArray(input.input?.materials) ? input.input.materials : []),
     ...(Array.isArray(input.assembled?.materials) ? input.assembled.materials : [])
   ];

lib/server/data-store.ts

@@ -803,12 +803,15 @@ function imageTemplateFromRow(row: Record<string, unknown>): ImageTemplate {
     prompt: String(row.prompt || ""),
     previewImageUrl: optionalString(row.preview_image_url),
     settings: isRecord(row.settings) ? {
-      engine: row.settings.engine === "jimeng" || row.settings.engine === "evolink" || row.settings.engine === "bailian" ? row.settings.engine : undefined,
+      engine: row.settings.engine === "jimeng" || row.settings.engine === "evolink" || row.settings.engine === "bailian" || row.settings.engine === "seedream" ? row.settings.engine : undefined,
       width: optionalNumber(row.settings.width),
       height: optionalNumber(row.settings.height),
       forceSingle: typeof row.settings.forceSingle === "boolean" ? row.settings.forceSingle : undefined,
       scale: optionalNumber(row.settings.scale),
-      quality: row.settings.quality === "low" || row.settings.quality === "medium" || row.settings.quality === "high" ? row.settings.quality : undefined
+      quality: row.settings.quality === "low" || row.settings.quality === "medium" || row.settings.quality === "high" ? row.settings.quality : undefined,
+      size: row.settings.size === "1K" || row.settings.size === "1.5K" || row.settings.size === "2K" ? row.settings.size : undefined,
+      outputFormat: row.settings.outputFormat === "png" || row.settings.outputFormat === "jpeg" ? row.settings.outputFormat : undefined,
+      optimizeMode: row.settings.optimizeMode === "standard" || row.settings.optimizeMode === "fast" ? row.settings.optimizeMode : undefined
     } : {},
     sortOrder: optionalNumber(row.sort_order) ?? 0,
     createdAt: requiredTimestamp(row.created_at, "image_templates.created_at"),

lib/server/image-template-input.ts

@@ -60,12 +60,18 @@ function normalizeTemplateSettings(value: unknown): ImageTemplate["settings"] {
   const engine = normalizeImageEngine(value.engine);
   const scale = optionalScale(value.scale);
   const quality = normalizeQuality(value.quality);
+  const size = normalizeSeedreamSize(value.size);
+  const outputFormat = normalizeOutputFormat(value.outputFormat);
+  const optimizeMode = normalizeOptimizeMode(value.optimizeMode);
   return {
     ...(engine ? { engine } : {}),
     ...(width && height ? { width, height } : {}),
     ...(typeof value.forceSingle === "boolean" ? { forceSingle: value.forceSingle } : {}),
     ...(scale !== undefined ? { scale } : {}),
-    ...(quality ? { quality } : {})
+    ...(quality ? { quality } : {}),
+    ...(size ? { size } : {}),
+    ...(outputFormat ? { outputFormat } : {}),
+    ...(optimizeMode ? { optimizeMode } : {})
   };
 }
 
@@ -89,7 +95,25 @@ function optionalScale(value: unknown): number | undefined {
 
 function normalizeImageEngine(value: unknown): ImageTemplate["settings"]["engine"] | undefined {
   const text = optionalText(value, 20);
-  if (text === "jimeng" || text === "evolink" || text === "bailian") return text;
+  if (text === "jimeng" || text === "evolink" || text === "bailian" || text === "seedream") return text;
+  return undefined;
+}
+
+function normalizeSeedreamSize(value: unknown): ImageTemplate["settings"]["size"] | undefined {
+  const text = optionalText(value, 10)?.toUpperCase();
+  if (text === "1K" || text === "1.5K" || text === "2K") return text;
+  return undefined;
+}
+
+function normalizeOutputFormat(value: unknown): ImageTemplate["settings"]["outputFormat"] | undefined {
+  const text = optionalText(value, 10)?.toLowerCase();
+  if (text === "png" || text === "jpeg") return text;
+  return undefined;
+}
+
+function normalizeOptimizeMode(value: unknown): ImageTemplate["settings"]["optimizeMode"] | undefined {
+  const text = optionalText(value, 20)?.toLowerCase();
+  if (text === "standard" || text === "fast") return text;
   return undefined;
 }
 

lib/server/seedance-billing.ts

@@ -1,9 +1,10 @@
-import { VIDEO_DURATION_MAX } from "@/lib/video-settings";
+import { SEEDANCE_25_MODEL, VIDEO_DURATION_MAX, isSeedance25Model } from "@/lib/video-settings";
 
 const SEEDANCE_FPS = 24;
 const SEEDANCE_TOKEN_SCALE = 1_000_000;
 
 export type SeedanceBillingEstimateInput = {
+  model?: unknown;
   resolution?: unknown;
   aspectRatio?: unknown;
   outputDurationSeconds: number;
@@ -13,6 +14,7 @@ export type SeedanceBillingEstimateInput = {
 };
 
 export type SeedanceActualBillingInput = {
+  model?: unknown;
   resolution?: unknown;
   inputVideo?: boolean;
   completionTokens: number;
@@ -20,11 +22,17 @@ export type SeedanceActualBillingInput = {
 };
 
 /**
- * 火山方舟文档的 Seedance 2.0 视频 token 单价，单位为“分/百万 token”。
- * 480p/720p、1080p 和 4K 的单价不同；含输入视频时使用对应的输入视频档。
+ * 火山方舟文档的 Seedance 视频 token 单价，单位为“分/百万 token”。
+ * 每个模型、分辨率及是否包含输入视频都有独立价格。
  */
-export function seedanceTokenPriceFenPerMillion(resolution: unknown, inputVideo = false): number {
+export function seedanceTokenPriceFenPerMillion(model: unknown, resolution: unknown, inputVideo = false): number {
   const normalized = normalizeSeedanceResolution(resolution);
+  if (String(model || "").trim() === SEEDANCE_25_MODEL) {
+    const prices = normalized === "1080p"
+      ? { withoutVideo: 7_700, withVideo: 4_600 }
+      : { withoutVideo: 7_000, withVideo: 4_200 };
+    return inputVideo ? prices.withVideo : prices.withoutVideo;
+  }
   const prices: Record<string, { withoutVideo: number; withVideo: number }> = {
     "480p": { withoutVideo: 4_600, withVideo: 2_800 },
     "720p": { withoutVideo: 4_600, withVideo: 2_800 },
@@ -42,7 +50,7 @@ export function calculateSeedanceActualAmountFen(input: SeedanceActualBillingInp
   if (!Number.isFinite(input.markupMultiplier) || input.markupMultiplier < 1) {
     throw new Error("Seedance 计费倍率不能低于 1.00。");
   }
-  const tokenPriceFenPerMillion = seedanceTokenPriceFenPerMillion(input.resolution, input.inputVideo);
+  const tokenPriceFenPerMillion = seedanceTokenPriceFenPerMillion(input.model, input.resolution, input.inputVideo);
   return Math.max(1, Math.ceil(
     input.completionTokens * tokenPriceFenPerMillion * input.markupMultiplier / SEEDANCE_TOKEN_SCALE
   ));
@@ -54,7 +62,7 @@ export function estimateSeedanceAmountFen(input: SeedanceBillingEstimateInput):
   }
   const inputVideo = Boolean(input.inputVideo);
   const inputDuration = inputVideo
-    ? normalizeInputVideoDuration(input.inputVideoDurationSeconds)
+    ? normalizeInputVideoDuration(input.inputVideoDurationSeconds, input.model)
     : 0;
   const completionTokens = estimateSeedanceCompletionTokens({
     resolution: input.resolution,
@@ -63,7 +71,7 @@ export function estimateSeedanceAmountFen(input: SeedanceBillingEstimateInput):
     inputVideoDurationSeconds: inputDuration
   });
   return Math.max(1, Math.ceil(
-    completionTokens * seedanceTokenPriceFenPerMillion(input.resolution, inputVideo) * input.markupMultiplier / SEEDANCE_TOKEN_SCALE
+    completionTokens * seedanceTokenPriceFenPerMillion(input.model, input.resolution, inputVideo) * input.markupMultiplier / SEEDANCE_TOKEN_SCALE
   ));
 }
 
@@ -84,10 +92,11 @@ export function estimateSeedanceCompletionTokens(input: {
 /**
  * 没有媒体元数据时按官方可接收的最大输入视频时长冻结，避免先扣少、成功后补扣造成余额不足。
  */
-export function normalizeInputVideoDuration(value: unknown): number {
+export function normalizeInputVideoDuration(value: unknown, model?: unknown): number {
   const duration = Number(value);
-  if (!Number.isFinite(duration) || duration <= 0) return VIDEO_DURATION_MAX;
-  return Math.min(VIDEO_DURATION_MAX, duration);
+  const maximum = isSeedance25Model(String(model || "")) ? 30 : VIDEO_DURATION_MAX;
+  if (!Number.isFinite(duration) || duration <= 0) return maximum;
+  return Math.min(maximum, isSeedance25Model(String(model || "")) ? Math.max(4, duration) : duration);
 }
 
 export function normalizeSeedanceResolution(value: unknown): string {
@@ -116,7 +125,7 @@ export function requestHasInputVideo(requestPayload: Record<string, unknown>): b
   return requestMaterials(requestPayload).some((material) => String(material.type || "").toLowerCase() === "video");
 }
 
-export function requestInputVideoDurationSeconds(requestPayload: Record<string, unknown>): number | undefined {
+export function requestInputVideoDurationSeconds(requestPayload: Record<string, unknown>, model?: unknown): number | undefined {
   const videoMaterials = requestMaterials(requestPayload)
     .filter((material) => String(material.type || "").toLowerCase() === "video");
   if (!videoMaterials.length) return undefined;
@@ -129,7 +138,7 @@ export function requestInputVideoDurationSeconds(requestPayload: Record<string,
     ))
     .filter((value): value is number => value !== undefined && value > 0);
   if (!knownDurations.length) return undefined;
-  return Math.min(VIDEO_DURATION_MAX, knownDurations.reduce((sum, value) => sum + value, 0));
+  return normalizeInputVideoDuration(knownDurations.reduce((sum, value) => sum + value, 0), model);
 }
 
 function requestMaterials(requestPayload: Record<string, unknown>): Array<Record<string, unknown>> {

lib/server/seedream-billing.ts

@@ -0,0 +1,15 @@
+export const SEEDREAM_50_PRO_MODEL = "doubao-seedream-5-0-pro-260628";
+
+export function calculateSeedreamAmountFen(input: {
+  outputPriceFen: number;
+  referenceImageCount: number;
+  markupMultiplier: number;
+}): number {
+  if (!Number.isFinite(input.outputPriceFen) || input.outputPriceFen <= 0) throw new Error("Seedream 输出价格必须大于 0。");
+  if (!Number.isInteger(input.referenceImageCount) || input.referenceImageCount < 0 || input.referenceImageCount > 10) {
+    throw new Error("Seedream 参考图数量必须在 0 到 10 之间。");
+  }
+  if (!Number.isFinite(input.markupMultiplier) || input.markupMultiplier < 1) throw new Error("Seedream 上浮倍率不能低于 1.00。");
+  const extraInputPriceFen = Math.max(0, input.referenceImageCount - 1) * 2;
+  return Math.ceil((input.outputPriceFen + extraInputPriceFen) * input.markupMultiplier);
+}

lib/server/video-generation-service.ts

@@ -10,12 +10,13 @@ import { DEFAULT_OWNER_ID } from "@/lib/server/runtime";
 import { importRemoteAssetAsAsset } from "@/lib/server/storage";
 import { createSeedanceTask, getSeedanceConfig, querySeedanceTask, type SeedanceSettings } from "@/lib/seedance/client";
 import type { BillingJobCharge, GenerationJob, UsageContext } from "@/lib/types";
-import { normalizeVideoDuration, normalizeVideoRatio, normalizeVideoResolution } from "@/lib/video-settings";
+import { VIDEO_DURATION_DEFAULT, clampVideoDuration, isSupportedSeedanceModel, normalizeSeedanceModel, normalizeVideoDuration, normalizeVideoRatio, normalizeVideoResolution } from "@/lib/video-settings";
 import { bailianResultUrls, bailianStatus, bailianTaskId, buildBailianVideoPayload, getBailianConfig, queryBailianTask, submitBailianTask } from "@/lib/bailian/client";
 
 export type VideoCreationEngine = "seedance" | "bailian";
 
 export type SubmitVideoJobInput = PromptAssemblyInput & {
+  model?: string;
   ownerId?: string;
   externalClientId?: string;
   prompt?: string;
@@ -114,6 +115,10 @@ function prepareVideoGeneration(input: SubmitVideoJobInput, origin: string): Pre
     ? input.engine
     : configuredEngine;
   const config = getSeedanceConfig();
+  if (engine === "seedance" && input.model !== undefined && !isSupportedSeedanceModel(input.model)) {
+    throw new Error("不支持的 Seedance 视频模型。");
+  }
+  const model = normalizeSeedanceModel(input.model, config.model);
   const assembled = assemblePrompt({
     ...input,
     mode: "video",
@@ -127,15 +132,17 @@ function prepareVideoGeneration(input: SubmitVideoJobInput, origin: string): Pre
     buildBailianVideoPayload({ prompt: finalPrompt, materials: assembled.materials, origin, settings });
   } else {
     settings.ratio = normalizeVideoRatio(settings.ratio, config.ratio);
-    settings.duration = normalizeVideoDuration(settings.duration) ?? config.duration;
-    settings.resolution = normalizeVideoResolution(settings.resolution, config.model, config.resolution);
+    settings.duration = normalizeVideoDuration(settings.duration, model)
+      ?? clampVideoDuration(config.duration, VIDEO_DURATION_DEFAULT, { model });
+    settings.resolution = normalizeVideoResolution(settings.resolution, model, config.resolution);
   }
   const missingProviderCredentials = engine === "bailian" ? !getBailianConfig().apiKey : !config.apiKey;
   const requestPayload = {
     input,
     assembled,
     settings,
-    engine
+    engine,
+    ...(engine === "seedance" ? { model } : {})
   };
   return {
     ownerId,
@@ -146,7 +153,7 @@ function prepareVideoGeneration(input: SubmitVideoJobInput, origin: string): Pre
     settings,
     missingProviderCredentials,
     provider: engine,
-    reqKey: engine === "bailian" ? getBailianConfig().videoModel : config.model,
+    reqKey: engine === "bailian" ? getBailianConfig().videoModel : model,
     requestPayload
   };
 }
@@ -180,7 +187,7 @@ async function dispatchVideoJob(job: GenerationJob, origin: string): Promise<Gen
       if (!providerTaskId) throw new Error("视频任务响应缺少 task_id。");
       return updateGenerationJob(job.id, { status: "running", providerTaskId, responsePayload: response });
     }
-    const response = await createSeedanceTask({ prompt: job.prompt || "", settings, materials, origin });
+    const response = await createSeedanceTask({ model: job.reqKey, prompt: job.prompt || "", settings, materials, origin });
     return updateGenerationJob(job.id, { status: "running", providerTaskId: response.providerTaskId, responsePayload: response.raw });
   } catch (error) {
     job = await updateGenerationJob(job.id, {