Smart Validation
Automatic checks for codec, resolution, aspect ratio, bitrate, and audio - before publishing.
Automated Pre-Publish Checks for Creators & Teams
Video Validator - Preflight for Social Publishing
Postly's Video Validator is a built-in, automated video editor preflight: it checks format, codec, resolution, aspect ratio, duration, bitrate, file size, frame rate and more - then auto-fixes what it can before your posts go live.
- Supports MP4, MOV, WEBM, AVI (with smart conversion to platform-safe targets)
- Detects H.264/H.265, VP9, AAC, Opus - validates audio & video codecs together
- Checks resolution, length, aspect ratio (9:16, 1:1, 16:9, 4:5), frame rate & bitrate
- Auto-adjusts or suggests fixes with one-click Postly actions
Video Editor-Friendly
Works with your existing edits; no re-export required - Postly adapts on publish.
Duration Limits
Enforces max lengths for Reels, Stories, Shorts, and LinkedIn uploads.
Auto Adjustments
Transcode, resize, rewrap, and normalize audio automatically where possible.
Clear Fixes
When manual changes are needed, get precise, editor-ready guidance.
Error Prevention
Avoid rejections, stuck encodes, and silent failures across platforms.
Aspect Ratios
9:16, 1:1, 4:5, 16:9
Bitrate & Size
Target ladders per platform
Codecs
H.264/H.265, VP9, AAC/Opus
How Video Validation Works
- Upload your video or select it from your media library inside Postly.
- Choose target platforms; Validator checks each destination's rules.
- Auto-fix runs (transcode, resize, rewrap) and shows a ready preview.
- Schedule or publish - Postly delivers platform-ready files instantly.
Why It Beats Manual Exporting
Traditional video editors don't keep up with constantly changing platform specs. Validator removes the guesswork and repetitive exports by applying the correct settings for each destination at publish time.
- Fewer export iterations from Premiere/Final Cut/CapCut
- Consistent looks across Reels, Shorts, Stories, and feeds
- Higher first-attempt publish success rate
Editor Modes & Automations
Transcode on Publish
Convert MOV/WEBM/AVI to MP4 (H.264 + AAC) or platform-preferred targets automatically.
Frame-Rate Normalization
Stabilize variable frame rates; adjust to 24/25/30/60 fps for platform compliance.
Loudness & Audio
Normalize loudness, channels, and sample rates to reduce upload processing errors.
Frequently Asked Questions
How does Video Validator help?
It automatically ensures your video meets each platform’s requirements - no more failed uploads or rejections.
Which video formats are supported?
MP4, MOV, WEBM, AVI and others. Incompatible inputs are automatically converted to platform-ready formats.
What happens if my video is too long or too large?
You’ll get a clear alert and one-click options to trim or compress. Many issues can be fixed automatically on publish.
Can I preview before publishing?
Yes. See per-platform previews and final output settings, then schedule across channels from one place.