Undo and Revise AI Video Edits: Timeline and Transcript
Review what the agent changed, compare earlier edits and choose where the next revision should begin. Valmera combines conversation with a program timeline, transcript controls and edit history. A useful correction names both the change you want and the work you want to keep.
Updated 2026-09-08. Guidance checked against the current Studio and backend source; the examples below are illustrative.
Go back to inspect an edit, then choose how to continue
Use the arrows near the player labeled Previous edit and Next edit. The counter shows your position in the available edit history. Its tooltip includes the underlying version. One agent request can produce several intermediate changes that are grouped into a single history step.
Selecting an earlier step changes the edit you are viewing and the conversation shown with it. It does not erase the later recorded edit states. If that state has no available preview, Studio requests one; allow it to finish or inspect the error before judging the picture.
Keep later approved changes
Return to the latest edit and request a narrow correction. For example, restore a missing sentence while preserving the approved music and captions. Review those preserved parts as well as the restored passage.
Continue from an earlier direction
Select the earlier edit, then send your new editing request or make a supported timeline change. The result becomes a new edit based on that selected state. Later additions are not automatically merged into it.
A history step can contain several changes. Going back before a request that changed both music and captions returns to the state before both changes. To change only the music, work from the latest edit and name that smaller correction. Keep copies of approved final files; edit history and a delivered file serve different purposes.
Make a revision in five steps
Identify the edit you reviewed
Open the intended project. Note the selected edit, the words or scene around the problem, and whether the timestamp comes from the source recording or the edited preview. Keep the approved parts in your brief.
Compare the relevant history steps
Use Previous edit and Next edit near the player to inspect an earlier and later state. Wait for the selected preview if it needs rendering. The conversation also follows the state you are viewing.
Choose where the correction should start
To keep later approved work, return to the latest edit and request a targeted correction. To take an earlier edit in a different direction, select that earlier state before sending the new editing request or making a timeline change.
Make one defined revision
Describe the change, the passage it affects and what should remain. Use the transcript line editor for a recognition error, chat for an editorial change, and available timeline controls for direct placement. Wait for an active agent request to finish before making a direct timeline edit.
Review the resulting version and file
Check the changed passage and its neighboring cuts, captions, framing and sound. Confirm the selected edit before creating the final MP4 in Studio. Inspect the downloaded file; a file downloaded before the revision does not update itself.
Download the video revision brief to record the selected edit, labeled timestamp, desired change and acceptance checks.
Example: restore an answer without losing approved music
Imagine three edit states: A contains the complete answer; B shortens it too far; C adds music and captions that you like. These labels describe an example, not measured results or literal Studio version numbers.
| Your intention | Start from | What to request and check |
|---|---|---|
| Keep C's music and captions; repair the answer | C, the latest edit | Restore the identified source passage. Check the answer, both joins, music continuity and captions after the timing changes. |
| Return to A's direction and try a different approach | A, the earlier edit | Request the new approach from A. Specify any later music or captions you want added again; they are not automatically combined. |
In the latest edit, the answer after “[quoted words]” lost its qualification. Restore the passage at source [start–end]. Preserve the approved music, caption look and framing. Review both joins and the affected caption timing in the revised preview.
For a scene from an inserted clip, name that clip and the preview passage. Restoring a range of the main recording does not reverse an edit to every inserted asset. The cleanup guide explains source and preview clocks with timing examples.
Correct transcript words separately from edit history
After speech analysis is ready, the transcript shows the recognized words and source timestamps. Click a word to seek to its source position. To fix recognition text, return to the latest edit, choose the sentence's pencil control (Edit transcript line), correct the line and choose Save. Enter saves; Escape cancels. A saved line must contain text and can contain up to 400 characters.
This changes recognition text, not the recorded voice or the cuts. Replacing “Val Mira” with “Valmera” corrects the name; it does not synthesize new speech. Shortening a sentence in this field does not remove those seconds from the video. For that, request a cut.
When the latest edit uses transcript-generated captions, Studio requests a preview render after the correction. Captions that are off or manually authored do not follow that same update path. Saving the line and completing the preview render are separate events: check both before deciding the correction is visible.
Corrected word timings can be redistributed within the original sentence span. Listen again near the changed name, number or phrase. Transcript text is updated separately from edit history. Selecting an older edit does not restore an earlier transcript copy. To reverse a text correction, correct that line again. An older downloaded video keeps its existing caption pixels.
For spelling replacements, manual caption items and burned-in subtitle limits, see the caption text and timing guide.
Use the timeline and player to check the selected edit
The program timeline represents the assembled video. Kept source sections, inserted media and audio have different roles. Use the available block controls for placement or trimming, and chat for changes that need context. Direct timeline writes are refused while an agent editing request is queued or running; wait for it to finish.
Check the selected edit after moving a block. Scrubbing helps locate a moment, but play through the join to judge speech, motion and sound. Source timestamps in the transcript differ from preview timestamps after cuts, speed changes or inserts. Put the clock label and edit version in a correction request.
Use Studio's + Add media flow to upload additional videos, images or audio, arrange them in the tray and send them when ready. Do not assume a selected file is already placed in the finished program. Video files support MP4, MOV, M4V, MKV and WebM, with both limits applying: 14 GB and 3 hours per file. See upload formats and readiness.
A project can also be assembled from assets without a main recording. Operations that depend on a main-source transcript or source clock need that source; inspect the actual project and available controls. Use authored text and overlays for titles and silent scenes.
Check each delivered frame shape separately: 16:9, 9:16, 1:1 or 4:5. The reframing guide covers crop and padding choices. Preview playback can use proxy media or a rendered preview. Final rendering uses the required original media, but encoding and output settings still affect quality. Review the final file independently.
When the revision does not look right
The history arrow is disabled
You may be at the first or latest available step, or Studio may be waiting for a selected version's preview. Check the current step and render status before clicking again.
The transcript is corrected but captions are unchanged
Confirm the line saved, return to the intended edit and check whether its captions come from the transcript. Wait for the render or inspect a failure. A manually authored caption needs its own text changed.
The new request lost changes I liked
Check which edit was selected when the request started. Continuing from an earlier state does not combine later additions automatically. Compare the relevant states and name the pieces you want retained.
The words look right but arrive at the wrong moment
Label the source or preview timestamp and current version. Review the sentence timing and neighboring cut; corrected spelling does not establish correct alignment.
The downloaded MP4 still shows the old edit
Check which version was selected for final rendering and which file you opened. An existing downloaded file cannot change when the project is revised. Render and inspect the intended final version.
Transcript saving is refused
Wait for analysis to finish and read the error. The current service also refuses transcript changes when the same source file is shared across different accounts. Do not repeatedly resend an unchanged request.
Questions about undo, revisions and transcript editing
Does Valmera have undo and edit history?
Valmera has Previous edit and Next edit controls for reviewing recorded edit states. Selecting an earlier state lets you inspect it. A new editing request or timeline change made from that state continues from it and appends the resulting edit to history. This is different from removing just one effect while retaining every later change.
Why does one history step include several AI changes?
The history controls group intermediate agent versions into conversation-sized steps, while direct user edits remain separate steps. One step can include the cuts, captions and sound changes made in a single request. The displayed step count is not a count of every internal tool operation.
Why does the conversation change when I go back?
Studio shows the conversation associated with the selected edit. Later messages can disappear from that view when you step backward. Use Next edit to inspect a later state before making a new change. Continuing from an older state takes the displayed conversation along that new editing path.
Will an earlier edit restore the old transcript wording?
No. Edit history records the editing instructions, while transcript corrections update the source transcript separately. Selecting an older edit is not a backup of the transcript text from that moment. To reverse a wording correction, edit the relevant transcript line again and check any captions that use it.
How do I correct a misheard caption word?
Return to the latest edit, find the transcript sentence and use its pencil control, labeled Edit transcript line. Correct the sentence and choose Save. When the latest edit uses transcript-generated captions, Studio requests a preview render. Check the resulting caption text and timing; manually authored captions need their own text correction.
Does deleting text in the transcript cut the video?
The transcript line editor corrects recognition text; it does not cut the recording or replace the spoken audio. For a cut, identify the passage in chat or use the available timeline controls. Keep transcript corrections faithful to the recording and review the corresponding captions.
Why can the preview still show the old words?
The render may still be pending or may have failed, you may be viewing an older edit, or the visible caption may be manually authored rather than generated from the transcript. Check the saved sentence, selected edit and preview status. An already downloaded preview or final MP4 remains the older file.
Can I export an earlier edit?
Studio submits the selected edit for final rendering. Choose the intended state, review its preview, then use the Studio download/export control. Final rendering needs the required original media to be ready. Inspect the resulting MP4, including its ending, before delivering it.
Are revisions free?
Account creation and uploads are free; indexing and agent editing require a subscription and processing credits. Credit use and processing time depend on the operations and revisions. Use the current plans and credits documentation to understand access, and keep a precise correction brief to avoid unnecessary attempts.
Finish the intended version
Account creation and uploads are free; indexing and agent editing require a subscription and processing credits. Review current plans, credit usage and the final export checklist.