You can edit a YouTube video after uploading it, but your options depend on whether you want to change the video file itself or just the title, description, and thumbnail
YouTube's built-in editor lets you trim out sections, blur faces or objects, add end screens, and adjust titles and descriptions without downloading the video or using outside software. If you need to make bigger changes — like cutting out a large chunk, adding music, or changing the order of scenes — you will need to edit the file on your computer first, then upload a new version. The fastest route for small fixes is YouTube Studio, which you can open right from your channel.
This guide covers both: what you can fix inside YouTube itself, and when you need to edit the file before uploading again.
Key Takeaways
- YouTube Studio's trim tool removes sections from the middle or ends of a video without re-uploading, though the video stays private while processing.
- You can blur faces, license plates, or other objects directly in YouTube Studio, and the blur stays in place even if the object moves.
- Changes to title, description, tags, and thumbnail happen instantly and do not require re-uploading or processing time.
- For major edits like reordering scenes, adding music, or changing the audio, you must edit the file on your computer and upload it as a new video or replacement.
- YouTube keeps your original file for 90 days, so you can replace a published video with an edited version without losing your view count or comments.
How to trim sections out of a video in YouTube Studio
Open YouTube Studio on a computer (not the mobile app). Click on "Content" in the left menu, find the video you want to edit, and click on it. Scroll down to the "Video details" section and look for a button that says "Trim" or "Editor" — the exact name varies by account. Click it to open the trim tool.
You will see a timeline of your video at the bottom of the screen. Click and drag the handles at the start and end of the timeline to mark the section you want to remove. The part you want to keep will be highlighted in white; the part that will be deleted is grayed out. Once you have selected the section to remove, click "Save" or "Apply." YouTube will process the video, which can take several minutes depending on length. Your video will be private while processing and will return to its previous privacy setting (public, unlisted, or private) when done.
You can only trim from the beginning, end, or middle of a video — you cannot remove multiple separate sections in one edit. If you need to remove several chunks, trim once, wait for processing, then trim again.
How to blur faces or objects in a video
In YouTube Studio, open the video and scroll to find the blur tool (sometimes labeled "Blur" or under an "Editor" menu). Click it to open the blur interface. You will see your video playing with a toolbar above it. Click the blur button and then click on the face or object in the video that you want to blur.
YouTube will automatically track that object or face through the video, so you do not have to blur it frame by frame. If the blur drifts or misses part of the object, you can adjust it by clicking and dragging the blur box. Once you are satisfied, click "Apply" or "Save." Like trimming, blurring requires processing time and will make your video private temporarily.
The blur tool works best on faces and stationary objects. If an object moves quickly across the screen or rotates, the blur may lose track of it, and you will need to adjust manually or consider re-editing the file on your computer.
How to change the title, description, thumbnail, and other details
These changes happen instantly and do not require re-uploading. In YouTube Studio, click on the video and then click "Details." You can now edit the title, description, tags, and category. Change anything you want and click "Save" at the bottom. The changes go live immediately.
To change the thumbnail, click on the thumbnail image in the Details section. You can either upload a custom image from your computer or choose one of the three automatic thumbnails YouTube generated when you uploaded the video. Click the thumbnail you want and then click "Save." The new thumbnail will appear on your channel and in search results within a few minutes.
When you need to edit the file on your computer instead
YouTube's built-in tools cannot reorder scenes, add music, change the audio, add text overlays, or make major structural changes to the video. If you need any of these, you must edit the file itself using video editing software on your computer, then upload it again.
You have two options: replace the existing video or upload it as a new video. To replace the video, go to YouTube Studio, click on the video, scroll down, and look for "Replace video" or "Upload new file." Click it and select your edited file from your computer. YouTube will process the new file and keep your original view count, comments, and likes. The video will be private while processing.
If you upload as a new video instead, it will have a new URL and start with zero views. Use this option only if you want to keep both versions or if the changes are significant enough that you want a fresh start.
What video editing software to use on your computer
If you are using Windows, the built-in app is called Photos or Video Editor (depending on your Windows version). Open it, click "New video project," and import your YouTube video file. You can cut sections, add music from the library, add text, and reorder clips. When done, click "Export" and save as an MP4 file.
If you are using a Mac, iMovie is built in and works the same way. Open iMovie, create a new project, import your video, make your edits, and export as an MP4.
Both of these are free and handle most common edits. If you need more advanced features like color correction, keyframe animation, or multi-track audio, you can download DaVinci Resolve (free version available) or Adobe Premiere Pro (paid subscription). For most YouTube creators, the built-in tools are enough.
How long editing takes and what to expect while processing
Trimming and blurring take anywhere from a few minutes to an hour depending on your video length and YouTube's server load. During processing, your video will be private. You will see a progress bar in YouTube Studio showing how far along the processing is. You can close YouTube Studio and come back later — the processing continues in the background.
Once processing is complete, your video returns to its previous privacy setting. If it was public before, it becomes public again. If it was unlisted or private, it stays that way. You do not have to do anything — the change is automatic.
If you are replacing a video file instead of just trimming, processing can take longer, especially for videos over 10 minutes. YouTube will notify you by email when the new file is ready.
Frequently Asked Questions
Can I undo an edit after I save it?
No. Once you trim, blur, or replace a video, the change is permanent. If you need to restore the original, you can re-upload the original file and replace the edited version, but YouTube will not keep a backup of the trimmed version. Always keep a copy of your original file on your computer.
Will editing a video change its view count or comments?
No. Trimming, blurring, and changing details like the title or description do not affect your view count, likes, or comments. If you replace the entire video file, your stats stay the same. Only uploading a completely new video gives you a fresh start with zero views.
Can I edit a video on my phone?
The YouTube mobile app does not have a trim or blur tool. You must use YouTube Studio on a computer. You can change the title, description, and thumbnail on the mobile app, but for trimming or blurring, you need a computer.
What file format should I use when I re-upload an edited video?
MP4 is the safest choice and works on all computers and editing software. YouTube also accepts MOV, AVI, WMV, FLV, and other formats, but MP4 is most reliable. When you export from your editing software, look for an option that says "MP4" or "H.264" and save it to your computer before uploading.
If I trim a video, does the URL change?
No. Trimming keeps the same URL, view count, and comments. Only uploading a completely new video gives it a new URL. If you replace the video file (not just trim it), the URL stays the same but the file itself is new.