The replay is free watch time — if the loop is clean
Platforms loop your clip automatically, and viewers stay through a clean wrap without noticing. Audition the seam exactly as the platform plays it, and let the tool score the join.
Free · no account · runs in your browser — nothing is uploaded; your audio never leaves your device.
A clean seam is craft. A bar-locked loop is engineering.
SongShort cuts clips whose loop points land on the actual bar line — the wrap isn't just smooth, it's musical. Sign up: 3 full packs free.
How to check the loop seam of a short clip
- Load the clip audioDrop the audio of your short clip.
- Audition the wrapPress Audition the wrap to hear the last 3 seconds run into the first 3, looping.
- Fix the seamTurn on the 30 ms crossfade if the join clicks or jumps.
- ExportPress Export fixed WAV.
Frequently asked questions
Why does looping matter for Shorts and Reels?
Average watch time is the ranking currency, and platforms replay short clips automatically. A seamless wrap keeps viewers through the restart — effectively doubling watch time — while a clunky seam is a scroll-away moment.
How does the checker score my seam?
It compares the audio right at the end against the start: level jump, spectral mismatch, and click risk. Green means the wrap will pass unnoticed; amber suggests a crossfade; red means the end and start genuinely clash — recut so the last beat hands off to the first.
What makes a clip loop musically?
Whole bars. If your clip is exactly 8 or 16 bars at the song's tempo, the downbeat after the wrap lands where the groove expects it. Duration ≈ bars × 240 ÷ BPM — the readout does the math while you nudge.
Can the tool fix a rough seam?
The crossfade option blends the last fraction of a second into the first — it fixes level and click issues instantly. It can't fix a musical mismatch; only moving the cut can.