How to Make Videos With Codex Using Grok 4.6 (2026 Guide)
Install the Pexo skill into OpenAI Codex, point Codex at Grok 4.6 as the backend model, and describe a video to get a finished, edited clip back.
Lan HeSep 10, 2026Lan He
Meet Lan, Senior Video Producer at Pexo, with over a decade of experience turning complex creative workflows into steps anyone can follow. A hands-on video editor and motion designer, he has taught thousands of creators how to ship video without the overwhelm, and he puts dozens of creative tools through real production work each year to see which ones actually hold up. At Pexo, he writes both step-by-step tutorials and best-of tool roundups, screen-recording each workflow himself and ranking tools on what they deliver in a real project rather than on their feature lists.
Articles by Lan He
Lan HeSep 10, 2026
How to Compress a MOV File Without Losing Quality (4 Ways)
Learn how to compress a MOV file on Mac and Windows using HandBrake, QuickTime, ffmpeg, and online compressors. Step-by-step methods to shrink MOV size while keeping quality.
Lan HeSep 10, 2026
How to Generate an AI Video From an Image and a Description
Learn how to generate an AI video from an image and a plain description in four steps. Pexo turns your words into a finished, ready-to-post video.
Lan HeSep 10, 2026
System Prompt Best Practices: How to Write Rules That Hold
System prompt best practices for AI agents: why prompts drift mid-conversation, how to write rules that hold, and where to enforce hard constraints so they stick.
Lan HeSep 10, 2026
How to Write AI Agent Instructions That Actually Work
Learn how to write AI agent instructions that get reliable results. A practical guide to setting goals, context, guardrails, and examples, with clear cases.
Lan HeSep 10, 2026
How to Test AI Agents: A Step by Step Guide (2026)
Learn how to test AI agents the right way: build eval sets, check the agent loop, score outputs with an LLM judge, run adversarial probes, and monitor in production.
Lan HeSep 10, 2026
Book Trailer for Your Amazon Listing: A+ Content, Specs, and the Brand Registry Gate
How to put a book trailer on your Amazon listing: video specs, A+ Content vs product video, the Brand Registry requirement for KDP authors, and upload rules.
Lan HeSep 10, 2026
How to Post a Book Trailer on Instagram Reels (2026 Guide)
How to post a book trailer on Instagram Reels: 9:16 specs, a 3-second hook, captions, audio, hashtags, and cadence. Build the trailer with the Pexo AI video partner.
Lan HeSep 10, 2026
How to Market a Self-Published Book: The Complete 2026 Playbook for Indie Authors
Learn how to market a self-published novel across reader targeting, platform choice, email lists, reviews, social, video, and launch timing.
Lan HeSep 10, 2026
How to Advertise a Self-Published Book: A Paid Ads Playbook (2026)
How to advertise a self-published book with paid ads on Amazon Ads, Meta, BookBub, and Google Ads, plus bidding, creative, and ACOS math.
Lan HeSep 10, 2026
A Book Marketing Plan for Indie Authors: The 90-Day Launch Timeline
A book marketing plan for indie authors is a dated timeline from 90 days before launch to 30 days after, with tasks, owners, KPIs, and a budget split.
Lan HeSep 10, 2026
Book Marketing on a Budget: How to Promote a Book for $0, $100, or $500 (2026)
Book marketing on a budget means spending free effort first (Goodreads, BookTok, email, reviews) and paying only where reach compounds: ads, BookBub, a trailer.
Lan HeSep 10, 2026
How to Publish a Book Trailer on YouTube: The Complete 2026 Playbook
Publishing a book trailer on YouTube means exporting the right specs, optimizing title, description, tags, and thumbnail, then routing it through playlists and Shorts.
Lan HeSep 10, 2026
How to Make a Book Trailer in 2026: A Step-by-Step Guide
Make a book trailer by writing a logline, choosing a visual style, and describing your book to an AI video agent like Pexo for a finished, edited clip.
Lan HeSep 10, 2026
Explainer Video Marketing Strategy: Plan, Create, and Distribute Videos That Convert
Learn how to build an explainer video marketing strategy that drives conversions. Step-by-step guide covering planning, production, distribution, and measurement.
Lan HeSep 10, 2026
Explainer Video for Social Media: How to Create One (2026)
Learn how to create explainer videos for social media. Platform specs, step-by-step workflow, and best practices for Instagram, TikTok, LinkedIn, and more.
Lan HeSep 10, 2026
Healthcare Explainer Video: How to Create Videos That Educate Patients and Build Trust
Learn how to create healthcare explainer videos for patient education, medical devices, and health campaigns. Includes types, best practices, and HIPAA tips.
Lan HeSep 10, 2026
Explainer Video for Startups: How to Create Videos That Win Users and Funding
Learn how startups can create explainer videos that drive conversions, attract investors, and simplify onboarding. Step-by-step guide with cost breakdowns and real examples.
Lan HeSep 10, 2026