Syncoders

2 posts

Building an AI Shorts pipeline with ffmpeg: 9:16, Ken Burns zoom, captions that match the voice

TL;DR Ask an LLM for a scene plan in JSON, and check every field before you use it. Crop each image to 9:16 first, then add a slow zoom with ffmpeg's zoompan filter. Make each scene as long as its vo

Oct 28, 202613 min read

Oct 27, 2026
Oct 27, 202616 min read
7 ways Stripe webhooks break in production (and the code that fixes each)
TL;DR Check the signature on the raw request body, never on re-built JSON. Stripe can send the same event twice. Save each event ID first and skip repeats. Return 200 only when the work is really don
16 min read

Latest articles

Building an AI Shorts pipeline with ffmpeg: 9:16, Ken Burns zoom, captions that match the voice

7 ways Stripe webhooks break in production (and the code that fixes each)