Error messages and what they mean
The messages you are most likely to see in FlowChord, what each one means, and what to do about it.
Updated October 22, 2026
FlowChord tells you when something goes wrong, usually in a short message at the edge of the screen or on the project’s card. This page lists the messages you are most likely to meet, grouped by what you were doing, with what each one means and what to do. Look for the words you saw; the message on your screen is written the same way.
Tips
- Most messages that end with “try again” mean exactly that: the same action usually works the second time.
- When a project fails before its files are stored, or the chord service fails, what was taken goes back to your balance by itself. A project that failed for another reason gives it back when you delete it before anything of it was analysed.
- If a message keeps coming back, write to us from Support in the account menu, and say which message you saw and what you were doing.
Common problems
Uploading
| Message | What it means | What to do |
|---|---|---|
| That file type isn't supported, use MP4, WebM or MOV | The video isn’t a kind FlowChord takes | Convert it to MP4 and pick it again |
| That video is too large, and this browser can't optimize it. Export it as MP4 (H.264) and try again | The video is over the size limit, and this browser can’t make it smaller | Use an up-to-date browser, or export a smaller MP4 from your camera or editing app |
| Couldn't optimize that file for upload | Making the file smaller stopped partway | Try again; if it repeats, convert the file to MP4 (H.264) first |
| The video upload failed | The upload didn’t complete, often because the connection dropped | Open the project and pick the same video again |
| The upload was interrupted | The page was closed before the upload finished | Open the project and pick the same video again; keep the tab open this time |
| FlowChord was just updated. Pick your files again | FlowChord was updated while your page was open | Pick your files again; nothing was charged |
| A project holds up to 4 videos and 4 audio files | A project has a limit of files of each kind | Remove a file before adding another |
| This browser can't show this video's picture, so the project will play here as sound only. Convert it to H.264 (MP4) or try another browser | This browser can’t show the picture of this video | Try an up-to-date browser, or convert the video to MP4 (H.264) |
| That file type isn't supported, use PDF, TXT, PNG, JPG or WebP | The chord sheet isn’t a kind FlowChord reads | Save it as a PDF, a text file or a photo |
More in A file won’t upload or play.
Analysis
| Message | What it means | What to do |
|---|---|---|
| We couldn't detect chords in this audio | FlowChord couldn’t find chords in the recording | Press Try again; check the recording has the guitar clearly in it |
| We couldn't read the audio from this video | FlowChord couldn’t read the sound of your file | Often an iPhone video with Spatial Audio; see the article below |
| Chord detection is temporarily unavailable | The chord service is down for a moment | Wait a few minutes and try again |
| The analysis stopped responding, try again | The analysis stopped answering | Press Try again |
| Unlock this video to detect its chords again | A free video has used up the analyses it includes | Unlock the video to have the whole song heard |
| The lyrics couldn't be detected | The lyrics couldn’t be heard; the chords are kept | Type the lyrics yourself in the editor |
More in Chords or lyrics came out wrong.
Export
| Message | What it means | What to do |
|---|---|---|
| The export failed, please try again | The video file couldn’t be finished | Try again; for a long song, close other tabs and export one cut at a time |
| Couldn't load your video for the export, please try again | Your footage couldn’t be downloaded for the export | Check your connection, reload the project and try again |
| Exported without audio — this browser can't include the soundtrack | The file was made without its sound | Export again from an up-to-date browser or a computer |
| Exported with the placeholder backdrop — this browser can't decode your video | Your footage couldn’t be read, so a plain background was used | Export again from an up-to-date browser or a computer |
More in Export is stuck or fails.
Payments
| Message | What it means | What to do |
|---|---|---|
| This video isn't paid for yet | Your balance doesn’t cover this song | Add funds, then try again |
| Couldn't open the checkout, please try again | Stripe’s payment page couldn’t be opened | Check your connection and try again |
| This free video's footage was deleted, so it can't be unlocked | A free video’s footage was deleted after its time ran out | Create a new project with the video |
| Your currency is set and can't be changed | Your balance’s currency is fixed after your first payment | Nothing to fix: Stripe can still show the price in your currency |
| Your bank refused the payment. Nothing changed | Your bank refused the plan payment | Try another card, or ask your bank |
More in Problems paying or adding funds.
Storage
| Message | What it means | What to do |
|---|---|---|
| Your storage is full. Delete a project you no longer use to free space | This file doesn’t fit in your storage | Delete a project you don’t need, then try again |
| You've reached your FlowChord storage limit. Delete a project you no longer use to free space and create a new project | There’s no room for a new project | Press Manage storage and free some space |
More in Your storage is full.
Account
| Message | What it means | What to do |
|---|---|---|
| Please log in again to continue | Your session ended | Sign in again; your work is saved |
| That code is invalid or expired. Please request a new one. | The sign-in code is old or mistyped | Use the newest code, or ask for a new one |
| Human verification failed. Please try again. | The quick check that you are a person didn’t pass | Reload the page and try again |
| That code did not work, check it and try again | The invite code wasn’t recognised | Check each letter, or join the waitlist |
More in Problems signing in.
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