Blog
Product updates, guides, and engineering notes from the team.
Free Image to Video AI: What "Free" Actually Gets You in 2026
Watermarks, resolution caps, queue times — a clear-eyed guide to free image to video AI tools, what the catches are, and how to get watermark-free HD clips without paying.
How to Animate Old Photos with AI: Bring Family Memories to Life
Turn decades-old photographs into living moments — smiles, blinks, gentle camera movement. A step-by-step guide with prompts that respect the original photo.
Best AI Video Model: Kling vs Hailuo vs Wan Compared
A practical comparison of the four AI video models on Zvidy — motion quality, speed, duration limits, aspect ratios, and cost per clip — with clear picks per use case.
How to Animate a Product Photo with AI (and Turn It into an Ad)
Turn a flat product shot into a rotating, studio-lit video ad in about 60 seconds — exact settings, motion prompts, and credit costs included.
AI Video Aspect Ratios Explained: 9:16 vs 16:9 vs 1:1 (and When to Use Each)
Pick the right aspect ratio before you generate — platform-by-platform guidance for TikTok, Reels, YouTube and feeds, plus how ratios work across AI video models.