Check spoken words across short-video cuts
Use a permitted video file already saved on this device, up to 100 MB. This page does not fetch TikTok URLs or turn a saved bookmark into a media file.
1. What file can I select here?
Choose an actual local video that plays with sound. Source access and download availability vary; this tutorial starts after obtaining a file you are allowed to use. The practice MP4 is a historical audio excerpt with a neutral picture, not a TikTok download. The browser first decodes the recording, checks its language with a multilingual checkpoint, then recognizes English with a separate English checkpoint. First use may download both models. Cached resource files can avoid another download, but they do not guarantee an initialized model: the English instance is released before the next language check. There is no fixed completion time.
Check: You have a playable media file, rather than a post URL or bookmark.
Back to the tool2. How do I check speech at a fast cut?
Replay both sides of a cut and listen for a clipped first or final word. Visible captions can be edited differently from speech; compare them separately. This tool does not read text from the picture. Click a transcript timestamp to seek in the local recording player. Replay the surrounding phrase before editing its cue. Text edits do not move cue boundaries. Use Find in this transcript to locate an exact word in the latest edits; Previous and Next navigate matches, Enter moves forward, Shift+Enter moves back, and Escape clears the search.
![How do I check speech at a fast cut? Actual local sample workflow. Any [reviewed] suffix is a deliberate teaching edit, not recognized speech.](/assets/tutorials/tiktok-transcript/02-review-narrow.svg)
Check: A cut has not removed a negation, changed a number or joined unrelated phrases.
Back to the tool3. How do I use the reviewed captions?
Keep text notes or take a valid timed file to Subtitle Editor. This page does not burn captions into video or promise a direct SRT upload in a mobile publishing screen. Copy, TXT and Markdown use your edited words and are untimed by default. Enable Include timestamps in TXT, Markdown and Copy to include available start times. Markdown escapes markup and exports transcript paragraphs, without creating a summary. SRT, VTT and Open in Subtitle Editor require nonempty text and complete valid start/end times; missing ends are not estimated. If timing is incomplete, save TXT or Markdown and keep the recording.
![How do I use the reviewed captions? Actual local sample workflow. Any [reviewed] suffix is a deliberate teaching edit, not recognized speech.](/assets/tutorials/tiktok-transcript/03-save-narrow.svg)
First cue from the actual teaching export (including the deliberate [reviewed] edit):
1 00:00:00,000 --> 00:00:07,740 And so my fellow Americans ask not what your country can do for you [reviewed]
Check: The final caption presentation is previewed in the app or editor where it will actually appear.
Back to the toolMore questions and limits
Does my recording leave this device?
Local decoding, recognition, replay, edits and downloads run in your browser. Model resources need network access, but the local recording and transcript are not uploaded. There is no account history or saved cloud project; download your work before closing the tab. Same-origin editor transfer keeps the cues and recording local between tabs. Instagram URL retrieval and YouTube caption lookup have separate server-assisted privacy boundaries.
What if decoding or the language check fails?
An undecodable file is different from a language result. Detected non-English speech stops recognition; an uncertain result or a technical language-check failure stops with a separate message and creates no transcript. For a damaged or unsupported file, export a new playable audio copy from its source: renaming the extension does not convert it. Recording Format Guide explains these boundaries.
Can I cancel and try again?
Only one transcription task runs at a time. Cancel processing discards its result; an in-progress model or audio operation may need to finish before controls unlock. Then use Try the same input again. Choosing another input clears the previous retry target. A cancellation is not a transcript of silence.
Where is the complete audio workflow?
Audio to Text explains search, text corrections and output choices. For timing changes, use Subtitle Editor.
Historical measurements and method limits
How long does a TikTok take to transcribe?
These are historical measurements from 2026-09-14 using only whisper-tiny.en. They do not measure the current language-detection plus English-transcription workflow, and exclude Instagram lookup and media download.
| Audio length | Historical wall-clock time | Historical model load |
|---|---|---|
| 11 s | 16.89 s | included |
| 11 s | 6.49 s | already in memory |
| 30 s | 8.98 s | already in memory |
| 60 s | 16.06 s | already in memory |
| 120 s | 28.58 s | already in memory |
In the historical test, the first run included model loading; subsequent runs retained the English model in memory. Current jobs release that instance before language detection, so a resource cache hit still requires initialization. Wall-clock time is not CPU time, and subtracting two runs does not isolate download or initialization time.
One machine, one WASM browser, one run per historical data point. Audio clips were constructed from a repeated public JFK recording. These rows do not predict today's end-to-end time, other devices or other recording content.
Sources: historical raw CSV · current two-model measurements (2026-10-14) · method, environment and limitations.
InstaScript is independent and is not affiliated with or endorsed by the source platforms mentioned here.