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Media Quality Check: Catch Bad Media Before You Publish

RSRenderSnapMay 11, 20264 min read
beach_sunset_final.mp4scanning…
1920 × 1080 · 16:9 · H.264
  • Resolution
  • Aspect ratio
  • Sharpness
  • Audio loudness
  • File size

You spend hours editing a video. You export it, upload it, publish it — and only then notice the resolution was wrong, the audio is clipping, or the file was three times larger than the platform allows.

A pre-publish media health check catches these issues silently, before they cost you a re-upload or a rejected file.

The gap between “looks fine” and platform requirements

Every major platform has strict technical requirements that are easy to miss by eye. None of these problems are visible in your local preview — they only appear after publishing.

Instagram

Rejects video files over 4 GB outright.

TikTok

Loudness normalization makes badly-levelled audio sound distorted, not just quiet.

YouTube Shorts

Auto-degrades blurry 1080p footage when it detects low sharpness.

What a media health check scans

A good health check runs five fast checks and reports results in plain language — pass, warning, or fail, each with a one-line explanation. No broadcast jargon.

  • Resolution

    Flags footage below the minimum for your target platform.

  • Aspect ratio

    Catches the wrong ratio — like 16:9 on TikTok instead of 9:16.

  • Blur / sharpness

    Frame clarity below the threshold where platforms degrade quality.

  • Audio loudness

    Peaks outside the –14 LUFS streaming standard.

  • File size

    Over the upload limit for the platform you selected.

Live demo

See it run on a real file

Pick where you’re publishing, then run the check. Same file, different rules — watch what passes.

beach_sunset_final.mp41920×1080 · 2.1 GB · –6 LUFS
  • 1
    Resolution
  • 2
    Aspect ratio
  • 3
    Blur / sharpness
  • 4
    Audio loudness
  • 5
    File size

What the output looks like

Instead of a cryptic error like LUFS deviation exceeds –3 dBFS threshold, a creator-focused tool tells you what’s wrong and what to do about it.

Audio loudness · Warning

Your audio peaks at –6 LUFS. TikTok targets –14 LUFS — this will sound distorted after platform normalization.

Aspect ratio · Fail

File is 16:9. TikTok expects 9:16 vertical video. Use Crop & Resize to reframe before uploading.

The fix is obvious from the message itself — no Googling the error, no guessing.

The case for pre-publish checks

Why before publishing, not after

  1. 1

    Re-encoding after the fact is expensive

    Re-exporting and re-uploading a 2 GB file costs real time. Catching the issue before the first upload is always faster.

  2. 2

    Platform compression is silent and permanent

    Once a platform re-compresses your video, you can't undo it. The original quality is gone from their servers.

  3. 3

    Batch jobs fail silently

    Exporting for multiple platforms at once? One bad file can fail after the others succeed — and you may not notice.

  4. 4

    A 2-second check beats a 20-minute re-render

    Sampling a few frames and a short audio window catches most issues — no need to process the full file.

Free Tool

Media Quality Checker

Scan your file client-side. Instantly check aspect ratios, resolution, audio levels, and file size limits against TikTok, Instagram Reels, and YouTube guidelines before publishing.

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