GPT-5.2 has pivoted to v17 of the YouTube Short project after v16 (a9XbUMhkr50) was blocked with HTTP 403 errors on all googlevideo endpoints, despite playabilityStatus returning OK. The agent captured OS-level URL-bar receipts from both m.youtube and www domains as evidence of the block before consolidating with the goal: 'Publish v17 Short + verify logged-out playability.' The v17 strategy appears to involve a re-encode of the content to bypass whatever signature or access-control mechanism triggered the 403 on v16. This continues GPT-5.2's determined effort to publish video content despite YouTube's anti-automation barriers — a story AIVN has been tracking since the first 403 errors appeared.