Video is stuck

If your dub looks frozen, the most likely answer is that it’s still working in the background. Dubs run through several processing stages in sequence, and each one takes time. This article helps you tell the difference between still working, waiting for you, and actually stuck — and what to do in each case.

First: refresh the page

Status updates don’t always reach your browser in real time. A page refresh often shows the dub has already moved on to the next stage. Do this before assuming anything is wrong.

What actually happens during processing

Each dub moves through these stages in order. The status bar on the dub tile shows you which stage you’re currently in.

Stage	What’s happening
Downloading	Your video is fetched (from URL or YouTube) or uploaded.
Processing video	Audio is extracted, the video is re-encoded.
Audio splitting	Voice is separated from music and sound effects.
Transcribing	Speech is converted to text with timestamps.
Assign Voices	(Only for Replace Voice mode with multiple speakers) Waits for you to assign a voice to each speaker.
Voice cloning	The original speaker’s voice is cloned.
Speech syncing	Each translated line is synthesized, timed, and aligned.
Rendering	The final video is assembled.

As stages complete, the status bar advances. A dub that’s been in the same stage for under 40 minutes is almost certainly still progressing normally.

”Assign Voices” is not stuck — it’s waiting for you

If your dub shows a yellow warning badge saying Assign Voices, it isn’t frozen. Dubly detected multiple speakers and needs you to pick which voice belongs to which speaker.

Open the dub, pick a voice for each speaker, and click Confirm. Processing resumes immediately.

• “Assign Voices” doesn’t appear when I expect it. This step only applies to Replace Voice mode. If you picked Original or Studio-Like, each speaker is cloned automatically.
• The button isn’t clickable. It’s only active when the dub has finished transcription and moved into the Assign Voices state (yellow badge). While the dub is still processing, the button appears but is inactive.

”Input Error” — the source file has a problem

If your dub shows a red Input Error badge, the issue is with the uploaded video, not the pipeline. Common causes:

• No audio track — the file has video but no sound
• No video track — you uploaded an audio-only file
• No speech detected — the audio has music, noise, or silence but no detectable speech
• YouTube download failed — the source URL is private, geo-blocked, or deleted

You can’t fix this from the UI. Delete the dub, prepare a clean source (see Do’s & Don’ts for original videos), and upload a fresh copy.

When it’s actually stuck

A dub is likely genuinely stuck if all of these are true:

• It’s been in the same stage for more than 40 minutes
• The stage isn’t Assign Voices (which waits for you)
• It doesn’t show an error badge

In that case it’s a pipeline issue on our side. Regular accounts don’t have a self-service restart — these need our support team. Contact hello@dubly.ai and we’ll restart the pipeline from the appropriate stage. If the failure was on our end, we’ll refund the credits.

What the pipeline retries automatically

If transcription finds no speech on the first pass, it automatically retries on the isolated voice track. This often rescues dubs where background music was masking the voice — you don’t need to do anything.

Credits on failed dubs

Credits are charged when the dub is created, before processing starts. Failed dubs are not automatically refunded. If a dub fails for a reason outside your control, email hello@dubly.ai with the dub link — we review these manually and refund genuine pipeline failures.

Contacting support

When emailing hello@dubly.ai, please include:

• The dub link (copy from the browser address bar)
• The stage it’s stuck in (from the status bar)
• Roughly when you created the dub
• A screenshot of the dub tile or error badge, if you see one

With that information we can check the pipeline logs directly and either nudge it back on track or issue a refund.