𝗕𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗮𝗻 𝗔𝗜 𝗩𝗶𝗱𝗲𝗼 𝗝𝗼𝗯 𝗤𝘂𝗲𝘂𝗲 𝗶𝗻 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁

AI video generation is not a standard HTTP request. A user sends a prompt and settings. The result takes minutes to arrive.

Your backend must handle many tasks. It needs to validate input, create jobs, talk to providers, poll for results, and handle failures.

A solid workflow requires six steps:

  • Validate the prompt and settings.
  • Check uploaded assets.
  • Create a job record in your database.
  • Submit the job to a provider.
  • Poll the provider until the video is ready.
  • Format the result for your UI.

Do not let provider APIs control your entire app. Use an adapter layer to keep your system stable. This allows you to switch providers without rewriting your core logic.

Create a central job type to act as your product contract. Every provider should translate its data into this format.

Define a VideoProvider interface with three methods:

  • submit: Send the job to the provider.
  • poll: Check if the job is finished.
  • normalizeError: Convert provider errors into your own error codes.

This keeps provider differences away from your billing logic and UI.

Always perform cheap checks first. Validate prompts and durations before you spend money on API calls.

When building your worker, use a polling strategy with increasing delays. If a job takes too long, move it to a "delayed" status. Do not let jobs stay in a "running" state forever. Use a separate process to check these delayed jobs later.

Your UI should never show raw provider errors. Map your internal error codes to clear messages for your users:

  • queued: Your video is waiting to start.
  • running: Your video is being generated.
  • delayed: This is taking longer than usual.
  • moderation_rejected: Try changing your prompt or assets.
  • provider_timeout: The provider did not return a result in time.

Clear messages reduce support tickets and help users understand what happened.

Treat AI video as a job system. A stable queue and a good error taxonomy make your product easier to maintain.

Source: https://dev.to/miao_cunhui_587ccddb6acc1/building-an-ai-video-job-queue-in-typescript-1349

Optional learning community: https://t.me/GyaanSetuAi