An Input Error means the source file itself can't be processed. When this happens, the dub is marked as Failed (a red badge in the status panel), usually early on. This isn't a server issue you can wait out, and there's no retry button — the fix is on your side: correct the source and create a new dub.
What causes it
Input Error covers a small set of source-file problems:
No audio track — the file has video but no sound.
No video track — you uploaded an audio-only file.
No detectable speech — the audio is music, noise, or silence with no clear speech to dub.
The upload didn't complete — the source video couldn't be found; the upload may have failed.
One thing that is not an Input Error: running out of minutes. That's caught by a separate check before processing starts, so if there weren't enough minutes to charge the dub, you'll be prompted to top up first (see step 3 below).
How to fix it
Check the source. Make sure it's a video file with a clear, audible spoken track.
Re-upload if the upload may have dropped (weak connection, tab closed mid-upload).
Top up minutes if you're short — see Plans & minutes — then try again.
Create a new dub with the corrected source. Editing or waiting on the failed dub won't fix an input problem; there's no retry button.
When to contact support
If the source clearly has audio, video, and speech, your upload completed, and you have enough minutes — but it still fails with an Input Error — ask Dubby in the chat (bottom right) with the dub URL and we'll take a look.
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