Upload an SRT to YouTube: check the track viewers see

Use the timed-file route, then check playback

To add a reviewed SRT to your own YouTube video, open the video in YouTube Studio’s Subtitles area, choose the language of the subtitle text, and upload the file using With timing. Then check the track’s publication state and select it in the video player. A successful file selection does not establish that viewers can access the right revision.

This workflow is for a prerecorded video and subtitles you own or are authorized to edit and distribute. It follows YouTube’s published help, linked below; it is not a report of a test upload to a creator account. If your Studio controls differ, use the current help and inspect the state shown for your video before changing existing captions.

Match the SRT to the final video edit

Before uploading, play the exact video edit that will receive the captions. Check the first spoken line, a passage near the middle and the last line against the SRT. A title sequence added after captioning can move every cue; a cut inside the video can break only the later portion. Resolve that mismatch before treating it as a YouTube upload problem.

Use a plain UTF-8 SRT file. YouTube’s supported-formats guide accepts basic SubRip timing and text but says SRT styling markup is not recognized. Do not expect a local font, color or carefully positioned caption to transfer through this format. If accented names look wrong in the file itself, repair the encoding first. Renaming a document to end in .srt does not create valid subtitle structure.

Keep the reviewed export separate from earlier drafts. A useful local filename includes the video revision, text language and subtitle revision. These are your filing conventions, not an instruction to YouTube: select the language explicitly in Studio rather than assuming it will infer the intended track from the filename.

Choose the language of the text you are uploading

For English speech with Dutch subtitles, put the Dutch text in the Dutch subtitle language entry. Keep a reviewed English caption file and a reviewed Dutch translation as separate deliverables when you want viewers to choose between them. The audio language and the subtitle text language answer different questions.

A bilingual file deliberately displays both languages together. Uploading it does not turn it into two independently selectable tracks. Decide that presentation before exporting. Likewise, a translated dialogue file is not necessarily a complete caption track: review meaningful sounds and speaker information when those are needed to understand the recording.

YouTube’s upload guide distinguishes a timed file from Auto-sync. Its Auto-sync transcript must be in the same language as the speech. For an SRT whose timestamps you have already reviewed, use the file upload’s With timing option; do not substitute an untimed translated transcript and expect that route to preserve your cue timings.

Follow the documented upload path

In YouTube Studio, select Subtitles from the left menu and open the intended video. YouTube’s current instructions say to choose Add language, select the language, and then choose Add under Subtitles. For a language that already has a track or draft, inspect that existing entry first; do not delete reviewed work just to recreate this starting state.

Choose Upload file, select With timing, continue, and select the reviewed SRT. YouTube’s file-upload instructions then say Save. Inspect the resulting track and its status. The help uses Publish for caption edits, so follow any remaining publication action shown by your workflow rather than treating Save as universal proof that the track is already available to viewers.

Check the selected video, language and several cue lines before completing the change. If an existing draft contains someone else’s corrections, agree which revision to retain and download a copy first. YouTube specifically warns that Duplicate and edit for automatic captions can overwrite an existing draft. An automatic track, an editable draft and your reviewed delivery file are not interchangeable copies.

Give the handoff one unmistakable revision check

Consider an original fictional repair film, Cut 04, with English speech. The approved wording at 00:42 is “Turn it a quarter turn,” correcting an earlier “half turn.” The English caption export is revision 3; a Dutch-speaking reviewer has checked the corresponding correction in the Dutch file. Both files must match Cut 04, even though their language names and wording differ.

Record the corrected phrase and its approximate playback position in a small delivery note. This creates a useful acceptance check: after uploading, seek to that passage and read the selected track. Seeing any captions is insufficient if they still contain the old instruction. The example names below are local organization only, and the dialogue is invented for this guide.

Video: repair-cut04.mp4
English: cut04-en-r3.srt
Dutch: cut04-nl-r3.srt

Revision check at 00:42:
English says quarter turn,
not the earlier half turn.
Dutch reflects the correction.

Record after playback:
Video / language / revision
Checked phrase / reviewer

Verify what a viewer can select and read

Open the video through a viewer-facing playback session with access to it. Enable captions and explicitly select the intended language track. If multiple choices appear, inspect which one you selected instead of relying on a remembered default. Confirm the corrected phrase, then watch the beginning, middle and end at normal speed for timing and missing text.

Repeat for each delivered language. Check accented characters, a long cue, a speaker change and any meaningful sound description. View a narrow or mobile layout as well as desktop: imported text can wrap differently from your local editor. This is a manual acceptance pass, not a guarantee that every device or accessibility need has been covered.

If the old wording remains, first confirm the video, selected track and publication state. Return to the relevant language entry before uploading another file or removing anything. YouTube documents downloading, editing and uploading captions again; retain a copy of the previous reviewed revision so a correction is recoverable. Record any change made directly in Studio in your local master too, or a later export could reintroduce the old text.

Prepare locally in Polyglot, upload deliberately

Polyglot on Apple Silicon Macs can create a timed speech draft from authorized media, import an existing SRT, review and edit text, translate it and export a separate SRT file. Review the result against the final recording and have a fluent reader check translated meaning. Automatic speech and translation output can contain errors; this guide does not claim automatic speaker identification or complete sound descriptions.

Polyglot prepares the local file; the YouTube Studio upload described here is a separate manual action. Uploading sends that subtitle file to YouTube. Local processing in Polyglot does not make the destination platform local, and an SRT export is not a direct publishing integration or captions permanently embedded into the video pixels.

Keep the final video revision, saved project, reviewed language exports and delivery note together. Delivery is complete when the intended viewer can select the correct track and read the accepted revision in time with that video. If the problem is malformed SRT, sync drift or translation wording, use the focused guides below before repeating the upload.

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