How to make a background on a video on Android - 5 ways for a phone

Replacing the background on a video from your phone Android is a task that seems difficult only at first glance. In fact, even a beginner can complete this task in 5-15 minutes if you choose the right tool. Depending on the goal (remove the background for chromakey effect, replace it with a static image or dynamic video), the approaches will be different. For example, for streams in TikTok or YouTube Shorts basic applications will be enough, but for professional editing you will need advanced solutions.

The main secret to successfully replacing the background is contrast between the object and the original background. If you are shooting on a plain wall (preferably green or blue), further processing will take place almost automatically. But even with a chaotic background, modern algorithms AI are coping better and better. In this article we will look at all the current methods: from built-in functions Google Photos to specialized applications like CapCut or KineMaster.

⚠️ Attention: The quality of the final video depends not only on software, but also from the source material. If the background is blurred and the subject blends in color, even the best applications will produce artifacts. In such cases, only manual modification will help in Adobe Premiere Rush (available for Android).

1. Built-in Android tools: when you don’t need to install applications

Not everyone knows, but some smartphones can already process video out of the box replacing the background. For example, Android out of the box they can process video with background replacement. For example, Google Photos (pre-installed on most devices) offers basic editing functions, including blur the background or replacing it with a color gradient. To do this:

Open the video. in Google Photos.
Click “Edit” → “Tools” → “Blur” (or “Effects”).
Select the “Background” option and adjust the intensity.

Unfortunately, full replacing the background here is not possible - only blurring or adding color filters. But the method works without the Internet and does not require installing additional apps.

On some models Samsung (series Galaxy S22 and newer) the application Gallery has a function Studiowhere you can separate the object from the background and export it in format PNG with transparency. This is convenient for further insertion into other videos through third-party editors.

⚠️ Attention: The functions of built-in editors may vary depending on the version Android and the manufacturer's shell (for example, One UI u Samsung or ColorOS u Oppo. Before starting work, check the available options in your phone.

2. Applications for automatic background replacement (AI solutions)

If there are built-in tools not enough, specialized applications come to the rescue. Their main advantage is automatic object selection with the help of AI, which saves time. Let's consider the top 3 solutions:

🎬 CapCut - free editor with the function Chromakey (green screen) and tool Background removal. Supports layers, transitions and export to 4K.
🖼️ Unscreen —a web service and mobile application that removes the background in 5 seconds. Ideal for short clips (up to 5 seconds in the free version).
🎥 KineMaster — professional editor with manual background mask settings. There is a plugin Chroma Key for working with a green screen.

Example of work in CapCut:

Import the video into the project.
Click on the clip → “Effects” → “Delete background.”
Wait for processing AI (usually 10-30 seconds).
Add a new background (image or video) to the bottom track.

Important: Unscreen and similar services often limit free functionality. For example, a watermark or a limit on video length. To get full functionality, you will have to subscribe (from ~$5/month).

Use a contrasting background (green/blue)

Ensure good lighting of the subject

Shoot in 1080p or above

Avoid camera movement-->

3. Manual background removal: for perfect results

Automatic tools do not always cope with complex scenes (for example, hair, translucent objects or dynamic backgrounds). In such cases, it will help manual mask in applications. like Adobe Premiere Rush or PowerDirector. The process is labor-intensive, but the result is worth the effort.

Step-by-step guide for PowerDirector:

Add a video to the timeline.
Click on the clip → “Mask” → “Manual”.
Stroke the object with a brush, adjusting the hardness of the edges.
Add a new background to the bottom track.
Apply an effect Alpha Blending to smooth transitions.

Tip: for precise work, use stylus or increase the timeline scale. PowerDirector there is a function Frame-by-Frame (frame-by-frame editing) that will help correct errors. AI on individual frames.

⚠️ Attention: Manually removing the background takes a lot of time - up to 1 hour for 1 minute of video at high resolution. If you need to process a long video, break it into fragments of 5-10 seconds.

How to speed up manual processing?

Use Automask as a basis, and then refine problem areas manually. KineMaster as a base, and then refine problem areas manually.

Export video in a lower resolution (for example, 720p) for rough editing, and render the final version at 1080p/4K.

Use Keyframes (keyframes) to animate the mask if the object is moving.

4. Green screen (Chroma Key): professional approach

If you plan to regularly replace the background, it is worth investing in green screen (or blue - blue screen). data-i="137">green screen

🛒 Ready chromakey background (from 1,000 ₽ for AliExpress).
🧵 Green fabric without folds (for example, sheet).
🖌️ Wallpaper or green paper (for static shooting).

Working algorithm:

Place the screen at a distance of 1-2 m from the subject to avoid shadows.
Light the background and the object separately (use 2-3 light sources).
Shoot a video in high resolution (1080p/60fps or higher).
In the editor (CapCut, KineMaster), apply the effect Chroma Key, choosing green color.

Critical nuance: even small folds or irregularities on a green background lead to artifacts. Before shooting, check the lighting - the background should be evenly illuminated, without shadows.

Parameter	Green screen	Blue screen
Camera color sensitivity	High (suitable for most cameras)	Low (professional equipment required)
Lighting	Requires uniform light	Less glare, but more difficult to set up
Artifacts on the hair	Frequent (due to green shades)	Less (blue color) more contrast)
Cost	Cheaper (green fabric is more affordable)	More expensive (special materials)

5. Real-time background replacement (for streams and video calls)

If you need to replace the background during broadcast (for example, in Zoom, Google Meet or TikTok Live), you will need specialized applications. They work on the principle AI- segmentation in real time, but require a powerful processor (recommended Snapdragon 8 Gen 2 or newer).

6. Processing the background on a PC and then transferring it to the phone

For maximum control over the result, you can process the video on the computer and then transfer it back to the phone. This method is suitable for long rolls or complex installations. Popular apps:

💻 Adobe Premiere Pro — professional editor with a plugin Ultra Key for chromakey effects.
🎬 Final Cut Pro (only for Mac) - optimized for working with iPhone, but exported video can be transferred on Android.
🆓 OpenShot - a free alternative with support Chroma Key.

How to transfer video back to your phone:

Export video in format MP4 (codec H.264).
Download the file to Google Drive or send it to yourself via Telegram.
Download the video to your phone and import it into a mobile editor for final edits.

The advantage of this method is access to advanced tools (for example, Roto Brush v After Effects to accurately select objects). Disadvantage - you need a PC and skills in working with desktop editors.

💡

If you need to process a video longer than 10 minutes, desktop editors will provide better quality and more opportunities for fine-tuning.

7. data-i="210">Even with the best tools, you can get a bad result if you don't take into account typical mistakes. Here's what most often spoils the video:

Even with the best tools, you can get poor results if you don't take into account common mistakes. Here's what most often ruins a video:

🌓 Poor lighting - shadows on the background or object make selection difficult. Use a ring lamp or two light sources in front.
🎨 Low contrast - if the color of the clothing is close to the color of the background. (for example, a green T-shirt on a green screen), AI will “eat” part of the object.
📱 Video compression — when recording at a low bitrate (for example, in WhatsApp), details are lost and the mask turns out torn. Remove. c 1080p/60fps.
🌀 Camera movement —if the phone shakes or moves, the background will “float.” Use a tripod or stabilization in the editor.

How to check the quality before rendering:

View the video in the editor at 100% scale.
Pay attention to the edges of the object - if there are green/blue halos, increase the threshold Chroma Key.
Check dynamic scenes (for example, waving a hand) - often artifacts appear there.

If errors visible only after export, don’t worry: most editors allow you to save the project and return to the edits later.

FAQ: Answers to popular questions

Is it possible to replace the background on a video shot on an old phone (for example, Samsung Galaxy J5 2016)?

Yes, but with reservations. Old phones shoot video in low resolution (for example, 720p), which complicates the exact selection of the object. We recommend:

Use CapCut or KineMaster with manual modification of the mask.
Shoot at the highest possible resolution (even if this 720p).
Avoid dynamic scenes - AI does not cope well with artifacts on old chips.

If quality is critical, transfer the video to a PC and process it in Adobe Premiere.

How to replace the background on a video with a person if he has red hair? The green screen is not there? suitable.

For complex objects (hair, fur, translucent fabrics), use blue screen (blue screen) or a combined approach:

Shoot a video on a blue background (it is better separated from red tones).
In the editor (KineMaster or PowerDirector), apply Chroma Key with manual adjustment of the mask.
For hair, use the tool Refine Edge (available in Adobe Premiere Rush).

If a blue screen is not available, try shooting on a gray background and using AItools like Unscreen, but be prepared for manual modification.

How long does it take to replace the background for 1 minute of video?

Time depends on the method:

Method	Processing time	Result quality
Automatic AI (CapCut)	2–5 minutes	Average (artifacts on complex objects)
Manual mask (KineMaster)	20–40 minutes	High (for precise work)
Green screen + `Chroma Key`	5–10 minutes	Very high (with proper lighting)
Desktop editor (Premiere Pro)	30–60 minutes	Professional

Tip: to speed up, split the video into fragments by 10-15 seconds and process them in parallel.

Is it possible to replace the background with a video where a person is moving very quickly (for example, a dance)?

Yes, but this is a difficult task. For dynamic scenes:

Use green screen and shoot at high frequency. frames (60fps or 120fps).
In the editor (CapCut or Premiere Rush) apply Motion Blur (motion blur) to smooth out artifacts.
For precise selection, use Roto Brush in After Effects (requires a PC).

⚠️ Attention: When moving quickly, AItools often “lose” the object. In such cases, manual editing. required.

Which application is better for replacing the background with Android without watermarks?

Free applications without watermarks (or with minimal restrictions):

CapCut —watermark the mark appears only when exporting to 4K (to 1080p clean render).
VN Editor — no watermarks, but limited functionality Chroma Key.
InShot — the free version adds a logo, but it can be removed by exporting the video via Google Photos (trimming the edges).

For complete absence of restrictions, consider paid versions (KineMaster for ~$4/month or PowerDirector for ~$6/month).

How to replace the background on a video from an Android phone: from simple to advanced methods