vercel/ai · error · AISDKError

ALIBABA_VIDEO_GENERATION_ERROR

ALIBABA_VIDEO_GENERATION_ERROR

Error message

No video URL in response. Task ID: ${taskId}

What it means

After video generation completes, the provider polls the task status. If the completed status response lacks output.video_url, buildCompletedResult throws an ALIBABA_VIDEO_GENERATION_ERROR because there is no result to return. This indicates an unexpected response shape from DashScope despite a 'succeeded' task status.

Source

Thrown at packages/alibaba/src/alibaba-video-model.ts:545

    responseHeaders: Record<string, string> | undefined,
    warnings: SharedV4Warning[],
    currentDate: Date,
  ): {
    status: 'completed';
    videos: Array<{ type: 'url'; url: string; mediaType: string }>;
    warnings: SharedV4Warning[];
    providerMetadata: SharedV4ProviderMetadata;
    response: {
      timestamp: Date;
      modelId: string;
      headers: Record<string, string> | undefined;
    };
  } {
    const taskId = statusResponse.output?.task_id;
    const videoUrl = statusResponse.output?.video_url;

    if (!videoUrl) {
      throw new AISDKError({
        name: 'ALIBABA_VIDEO_GENERATION_ERROR',
        message: `No video URL in response. Task ID: ${taskId}`,
      });
    }

    return {
      status: 'completed',
      videos: [
        {
          type: 'url',
          url: videoUrl,
          mediaType: 'video/mp4',
        },
      ],
      warnings,
      response: {
        timestamp: currentDate,
        modelId: this.modelId,

View on GitHub (pinned to 69428b1f8b)

Solutions

1. Log the full statusResponse to inspect actual output fields
2. Verify the model ID and API version produce video_url on completion (e.g. wan2.2-t2i vs wan endpoints)
3. Retry the generation task; if persistent, report the raw response to the provider/SDK issue tracker

// Cannot validate before call; validate after polling completes:
if (status.output?.task_status === 'succeeded' && !status.output?.video_url) retryOrFail();

function hasVideoUrl(r: unknown): r is { output: { video_url: string; task_id: string } } {
  return !!(r as any)?.output?.video_url;
}

try {
  result = await generateVideo({ model, prompt });
} catch (e) {
  if (AISDKError.isInstance(e) && e.name === 'ALIBABA_VIDEO_GENERATION_ERROR') {
    // inspect status response, optionally re-poll or resubmit task
  }
}

When it happens

Trigger: Polling a completed Wan video task via doStatus where statusResponse.output.task_id exists but output.video_url is missing or named differently (API change, partial response).

Common situations: DashScope API shape changes, region/account configurations returning different fields, or task finished with a non-success state the provider misclassified as completed.

Related errors

• BYTEDANCE_VIDEO_GENERATION_ERROR
• FAL_VIDEO_GENERATION_ERROR
• GOOGLE_VIDEO_GENERATION_ERROR
• KLINGAI_VIDEO_GENERATION_ERROR
• MINIMAX_VIDEO_GENERATION_ERROR

AI-assisted analysis of vercel/ai@69428b1f8b (2026-08-30). Data as JSON: /api/errors/28f8733f39c808d5. Report an issue: GitHub.