EDITDUO / LOCAL VIDEO FRAME GUIDE
Replace one frame. Export the whole video.
Put an edited image back into its original moment and export a complete MP4 in your browser. This workflow needs no account or paid model call. Each application changes one frame; automatic whole-video tracking and generative frame editing are not open.
Open studio and choose a videoFrom one frame to a downloaded video
Open a short video and save the target frame
Use Choose image or video to open an MP4 or WebM. Move the timeline to the moment you want to change, choose Annotate this frame, then select that saved frame. On your first visit, finish or skip the workbench guide.
Prepare the exact source frame
Under the timeline, find Local video editing and choose Prepare frame. The studio verifies the source and decodes an actual frame, showing its dimensions and precise time. Use this prepared image instead of calculating a frame time yourself or taking a player screenshot.
Save the clean frame and make a replacement
Choose Save clean frame, edit the required area in an image editor, and save a still PNG, JPG or WebP at the same pixel dimensions. Keep the canvas intact. You can also use Object color on the prepared frame; it downloads a browser model and has selection and hue limits explained in the linked guide below.
Import and inspect the replacement
Choose Import edited frame and select your edited image. It must exactly match the dimensions shown by Prepare frame. Inspect the wording, object boundaries and areas you meant to keep. Import a corrected version if the preview is unsuitable.
Apply to this frame
Applying clears this frame’s existing annotations, overall note and layout. Save a separate project copy first if you need to keep them, then choose Apply to this frame. Undo can restore the earlier state in the current session; reopening a project does not restore the complete Undo history. The edited-frame count updates, and the edit is bound to the actual source frame. To change another moment, save another frame on the timeline and repeat. You can keep up to 30 edited frames in a project.
Export the whole video and check the download
Choose Export edited video and keep the page open until encoding and packaging finish. Confirm that your browser actually saved the MP4. Replacement images are used at their applied frames. H.264 re-encoding can change other pixels, so the output is not pixel-for-pixel lossless.
Save the project and keep the source video
Choose Save project in the top bar to download the editable record, and keep the original video separately. Reopen the project and use Relink video to choose that exact source file. A project stores frame edits and notes, not the full source video or the complete Undo history.
Start with a short test clip
For example, change a word on a billboard in one frame: save the clean frame, edit the image at the same dimensions, import it, apply it and export. Open the downloaded clip and inspect the target moment, neighboring frames and audio. This is an example of frame replacement, not a verified automatic text-editing result or a speed guarantee.
File and device limits
Source video
MP4 or WebM, up to 100MiB, 60 seconds and 3,600 frames. Each display and encoded edge must be at most 1,920 pixels, with encoded area at most 1920×1080 pixels. Use one video track starting at zero and at most one supported AAC audio track. A playable file can still be incompatible with editing; Prepare frame checks it.
Replacement image
A still PNG, JPG or WebP under 20MiB that also fits the saved PNG project limit. Its pixel width and height must match the prepared canvas exactly; import does not crop or stretch it.
Export and device
The work canvas has a longest edge of at most 1,800 pixels, with width and height rounded down to even numbers. The dimensions shown by Prepare frame are the output dimensions for the whole clip, so export may downscale the entire video: for example, 1920×1080 becomes 1800×1012. H.264 MP4 output is limited to 64MiB. Supported AAC audio is retained; an unsupported audio path fails instead of silently dropping it. A browser with WebCodecs is required; use Chrome to check whether your device can decode and encode this clip.
Saving and cancellation
Up to 30 edited frames and a 50MiB project. You can cancel an export. Confirm the download before closing the page. Local auto-save does not replace a downloaded project and the original source file.
Questions about single-frame edits
Will the change last throughout the video?
One application replaces one frame, which usually appears for only a brief instant. A change spanning several frames needs a replacement for each affected frame. Automatic tracking and replacement of the same object across a video are not open on the public site; local tracked-result acceptance does not make that a public feature.
Why does the player still show the original after I apply?
The studio player plays the source video. Check the replacement preview and edited-frame count, then export and open the downloaded MP4 to review the actual result. Annotations and exported feedback record instructions; use Apply to this frame and video export to produce an edited clip.
Can I change billboard text or a clothing color?
You can import an already edited frame at the same dimensions, or use local Object color to change a selected hue. Generative text edits, prop replacement and automatic layer decomposition still need separate acceptance; the public site cannot perform them from a text instruction yet.
Is my video uploaded, and do I need an account or subscription?
This clean-frame export, image import and video encoding workflow runs in your browser. It does not upload the source video to a model service and needs no account or subscription. See the object-color guide for its initial model download. Paid checkout stays closed.
What should I check if export or relinking fails?
Save your project and keep the original video first. Check file size, duration, audio and replacement dimensions. Relinking requires the same original file; a recompressed copy may not match. If the browser cannot decode or encode it, try another device or prepare a compatible short copy and start a new project from that copy.
Related workflows
Object selection and shading-preserving recoloring explains include/exclude points, boundary inspection and hue limits. For timestamped editing notes, use video annotation and feedback.