On Mac, first check whether your MP4 subtitles are switchable. For words in the picture, process a local copy in the browser and keep the original alongside the result.
Mac browser workflow · local Finder files · no native application from this service required
Choose the correct MP4 from Finder, test its subtitle type and preview it locally. Remove a switchable track externally; use automatic repair for words that remain in the picture.
Match the file you choose to the file you preview
Locate the MP4 in Finder, then choose that file in the browser. Similar filenames and multiple exports can make it easy to process an older version. Confirm the visible opening scene and duration.
Locate the exact export in Finder
Use a recognizable filename and check its size and duration. Keep the original in a separate location from later outputs.
Play the local file
Confirm the opening scene and audio. If a cloud-storage icon indicates the file is not local yet, finish its download.
Select that file in the browser
Match its preview with the file you just checked.
Check: The selected file is the intended export, not an older similarly named copy.
Check the subtitle type
A subtitle-capable player can help test whether the words come from a separate track. For a track-only task, use a subtitle export method. AI repair is for text that remains in the image.
Subtitles switch off
The original picture may already be clean. Avoid unnecessary image repair.
Remove MP4 selectable subtitlesSubtitles remain in the frames
Prepare the desired scene and inspect a repair result before using it in a new edit.
See hardcoded subtitle examplesConfirm processing in the browser
No native Mac application is required for this workflow. Review the local preview and cost before upload. If you need a middle scene, export that scene separately before choosing the file.
Keep input and output distinct
Download the result with a recognizable filename and reopen it from Finder. Inspect the processed duration and subtitle region; a browser preview alone does not verify the file you intend to use in your next edit.
When a Mac export needs another step
Solve the file preparation issue before processing.
The MP4 plays locally but not in the browser
Likely cause: The browser may not be able to play the way the original was saved.
What to do: Export a compatible H.264 MP4 and check the copy before selecting it.
The source is actually MKV
Likely cause: This repair workspace does not accept MKV directly.
What to do: Remove separate subtitle tracks in the MKV workflow, or convert the burned-in clip before repair.
The downloaded copy appears unchanged
Likely cause: You may have reopened the source or a previous export.
What to do: Use the browser download list to locate the latest result and compare its filename and duration.
Questions and answers
Do I need to install an application on Mac?
No. This service runs in the browser. A separate editor may still be useful for trimming or converting unsupported files.
Can I use the same workflow for an MKV file?
Not directly. MKV is not accepted here; remove a separate track externally or convert the file before repairing hardcoded words.