{"uid":"cap_2SViLhDG58JKKyziKkTmN","slug":"zeus-visuals-immersive-kb-aivu-apac-audio-extraction-guide-c963faa8","name":"Zeus Visuals Immersive KB – AIVU APAC Audio Extraction Guide","description":"Getting audio out of an AIVU when FFmpeg says \"no decoder found for apple_apac\". Apple Immersive (AIVU) audio is APAC, which FFmpeg can't decode or copy into MP4, and Apple's automatic stereo mix silently returns silence. The working fix is to decode APAC natively to PCM with AVFoundation, then encode with FFmpeg. Exact errors, settings, and gotchas.","url":"https://zeuskb.com/kb/aivu-apac-audio-extraction?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_r8kQZ1DT4ptP0DbmygCnD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a technical knowledge base article on how to extract and decode APAC audio from Apple Immersive Video (AIVU) files, covering FFmpeg limitations, AVFoundation-based PCM decoding, and re-encoding workflows.","exampleAgentPrompt":"I'm getting a 'no decoder found for apple_apac' error in FFmpeg when trying to pull audio out of an Apple Immersive Video file — can you look up the Zeus Visuals KB article that explains how to decode APAC natively with AVFoundation and then re-encode it with FFmpeg?","exampleUseCases":[{"title":"Fixing silent stereo mix from AIVU","prompt":"My Apple Immersive Video exports are coming out with completely silent audio even though the file has an APAC track — what's the correct workflow to decode that audio and get actual sound out?"},{"title":"Resolving FFmpeg apple_apac error","prompt":"FFmpeg keeps throwing 'no decoder found for apple_apac' when I try to copy or decode the audio from my AIVU footage — is there a guide that explains the exact fix using AVFoundation to get PCM and then re-encode it?"},{"title":"AIVU post-production audio pipeline","prompt":"I'm building a post-production pipeline for Apple Immersive Video and need to understand how to handle the APAC audio codec — specifically how to use AVFoundation to decode it to PCM before passing it back through FFmpeg for encoding into MP4."}],"resultDescription":"A detailed technical article covering: the specific FFmpeg error ('no decoder found for apple_apac'), why Apple's automatic stereo mix silently returns silence, the working fix using AVFoundation to natively decode APAC audio to PCM, exact FFmpeg re-encoding settings and commands, and known gotchas and edge cases in the workflow.","failureModes":["HTTP 402 if payment is not provided or fails","HTTP 404 if article URL is invalid or removed","Network timeout if the server is unavailable","Empty or malformed response if the article content has changed structure"],"whenToPreferThis":"Choose this endpoint when you need authoritative, field-tested technical guidance specifically about APAC audio extraction from Apple Immersive Video (AIVU) files, particularly when encountering FFmpeg's 'no decoder found for apple_apac' error or silent audio output from AIVU exports. Prefer this over generic FFmpeg documentation or forum searches when you need a consolidated, production-tested fix with exact settings.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T06:37:58.245Z","isFirstParty":false,"canonicalSlug":"zeus-visuals-immersive-kb-aivu-apac-audio-extraction-guide-c963faa8"}