Gemini SynthID: 10 video checks a day, which clips to submit

Google's Gemini app allows about 10 video checks per 24 hours, up to 5 minutes in total. Work out how many clips fit and which ones are worth checking.

5 min readSume
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How many videos can I verify in the Gemini app each day?

About ten. Google's help page says that within any 24-hour period you can do approximately 10 image checks, 10 video checks (up to 5 minutes total) and 10 audio checks (up to 3 hours total). So a batch of 40 clips cannot all be checked in a day, and you have to decide which ones to submit.

The page says approximately, so treat the numbers as a planning guide and re-read them before a big job.

Which limit binds: the count or the minutes

With 10 video checks sharing 5 minutes (300 seconds), short clips hit the count limit first and long clips hit the minutes first. The table is my arithmetic on Google's figures, with whole clips only.

Video checks per 24 hours by clip length (arithmetic on Google's figures, read 2026-10-03)
Clip lengthAllowed by the minutes (300 / length)Allowed by the countChecks you can run
8 seconds371010
30 seconds101010
60 seconds5105
85 seconds3103

Decide which clips are worth a check

The help page says SynthID currently works for Google AI-generated content, and that Gemini cannot yet recognise watermarks from other sources. A clip from a non-Google model will not come back positive, so spending a check on it tells you little. Spend them on the clips where a Google model was involved.

That is a record-keeping job. Keep the catalog model id with each finished job. The Video Router lists gemini-omni-flash-1.1 next to Seedance, Wan and MiniMax ids, and your log lets you separate the Gemini Omni outputs from the rest.

  • Check the final cut you will publish, not every intermediate.
  • Check the clips with a Google model in the chain first.
  • Write the result and the time next to the job id.
  • Leave an unchecked clip marked unchecked rather than assumed clean.

Measure length before you spend a check

A check burnt on a file that is too long is wasted effort. Run video inspect with frames: false and read probe.duration_seconds and probe.size_bytes for each candidate. The help page lists 100 MB and under 90 seconds as the per-file limits. A probe-only call uses no transcript, so the speech-to-text rate does not apply.

A log that keeps the plan honest

One row per clip is enough. Columns that earn their place are the Sume job id, the catalog model id, the clip length from probe.duration_seconds, whether it was submitted to the app, the date, and the answer. Because Google counts per 24-hour period, group your submissions in batches of no more than the limit and note when each batch ran.

Leave anything you did not check marked as unchecked. A blank cell is honest; a green tick that means 'we did not look' is not.

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Written by Sume