Modern smartphones, such as Samsung Galaxy A10have become powerful tools for creating content. However, the camera often captures extra space at the edges of the frame, or the video ends up being too long to post on social media. Users often look for simple ways to solve this problem without installing third-party applications.
The built-in tools of the operating system Android and proprietary shell One UI allow you to perform basic processing of video recordings in a matter of seconds. You don't need to be a professional editor to highlight a key moment or change the proportions of the frame to fit the story format.
In this article we will analyze in detail the process of editing a video stream directly on the device. We will look at the standard editor, features of saving files and nuances of working with memory, which are critical for budget models.
Preparing video material and launching the editor
The first step is to search for the desired file in the device storage. Open the standard application Gallerythat is preinstalled on your Samsung A10. Find an album with videos or a section Video in the bottom navigation bar.
Click on the thumbnail of the video you plan to edit. After opening playback, pay attention to the bottom of the screen. There is a toolbar with various action icons.
To enter editing mode, you need to click on the icon that resembles a pencil. This interface element stands for edit. In some firmware versions, the button may be named Edit or have a caption under the icon.
If the pencil icon is missing, make sure that the file is indeed a video and not an image. Also check whether there is enough free RAM to run the heavy processing process.
⚠️ Attention: If you are trying to edit a video downloaded from instant messengers (for example, WhatsApp or Telegram), the built-in editor may not be available due to access restrictions or file compression format.
Before you start editing, make sure that the battery charge is at least 20%, since the video rendering process consumes a lot of energy.
Crop tool interface and navigation
After clicking the edit button, the screen will change and a timeline will appear at the bottom. This is the main working tool where the duration of your clip is displayed in seconds and frames.
At the edges of this scale there are two sliders - white or yellow markers. The left marker is responsible for the start of playback, and the right one for its end. By dragging them, you select the desired segment.
When you move the sliders, the area that will be deleted is usually darkened or highlighted in gray. The central part between the markers remains bright - this is the area that will be saved in the final file.
For fine-tuning, use the frame-by-frame scrolling function. Simply move your finger along the center of the timeline to find the perfect moment to start or end trimming.
- 🎬 Use the button
Playto preview the selected segment before saving. - ✂️ Trimming accuracy depends on video length: on short videos, the step of moving the marker is smaller.
- ↩️ The button
Cancel(back arrow) allows you to reset changes if you accidentally moved the slider too far.
Changing proportions and cropping the image
Often simple time cropping is not sufficient and the frame geometry needs to be changed. In the editor menu, find the tool Aspect Ratio or the icon with intersecting corners.
Click on this element to open the list of available formats. For Samsung Galaxy A10 with its 19:9 screen, the most native formats are Full screen or Original.
If your goal is to upload to Instagram Stories or TikTok, select the format 9:16. For classic YouTube, 16:9is suitable, and for Instagram feed - 1:1 or 4:5.
After selecting the proportion, you can move the image itself inside the frame. This allows you to shift the focus to the main subject of shooting, removing unnecessary details at the edges.
| Format | Purpose | Loss of quality |
|---|---|---|
| Original | Save all shooting details | Absent |
| 16:9 | YouTube, TVs | Minimum (edge trimming) |
| 1:1 | Posts on social networks | Medium (strong cropping) |
| 9:16 | Stories, Reels, TikTok | Depends on source |
⚠️ Attention: When changing the aspect ratio from horizontal to vertical, part of the image on the sides will be permanently deleted. Make sure that important objects do not fall into the clipping zone.
Why does the video turn black when changing format?
If the original video does not completely fill the new format, the system adds black margins at the top and bottom or on the sides to maintain the proportions without distorting the picture.
Saving the result and creating a copy
When you are satisfied with the result of trimming and cropping, the saving stage begins. Click the button Save, which is usually located in the upper right or lower corner of the screen.
The system will offer two options: Save as a copy or Overwrite original. The first option is always recommended so as not to lose the original material.
If you choose to create a copy, the file will receive the same name with a postscript Edit or version number. The original video will remain untouched in memory.
The saving process can take from several seconds to a minute depending on the length of the video and the power of the processor Exynos 7884installed in the A10.
☑️ The process of saving video
Do not close the application Gallery until the notification appears successful completion. Interrupting the process may damage the file.
Memory handling and technical limitations
The model Samsung Galaxy A10 belongs to the budget segment and often has a limited amount of internal memory (32 GB). Video editing creates temporary files that take up additional space.
Before you start, check the free space in your phone settings. If the memory is less than 500 MB, the system may be unstable or display an error when saving.
After completing installation and checking the quality of the new version, you can delete the original to free up space. Do this only through the gallery menu by selecting Delete.
It is also worth considering that resaving a high bitrate video may increase the final file size compared to the original due to transcoding.
⚠️ Attention: The interface and available functions may vary slightly depending on the version Android and One UI shell updates. If you do not find a button, check for system updates.
Always save the video as a copy to be able to return to the source if the editing result is not satisfactory.
Solving common problems and errors
Users sometimes encounter a situation where the save button is inactive or the video does not play after trimmings. Most often this is due to corruption of the source file or incompatibility of codecs.
If the application closes spontaneously, try clearing the gallery cache. To do this, go to Settings → Applications → Gallery → Storage → Clear cache.
If the video has a resolution higher than what the screen or processor supports (for example, 4K on a budget device), the editor may work extremely slowly. In such situations, it is better to use lightweight third-party applications.
Also check that the power saving mode is not enabled, which limits processor performance and may interfere with multimedia processing.
- 🔋 Disable the power saving mode before starting installation.
- 🗑️ Clear the application cache Gallery in case of failures.
- 💾 Free up at least 1 GB of free space for correct operation.
What to do if the video is not saved?
Try to restart the device. If the problem persists, copy the video to your computer, edit it there and return it back.
Alternative methods of editing on Android
If the built-in functions are not enough, the store Google Play offers many solutions. Popular apps like InShot, KineMaster or CapCut provide advanced features.
Third-party editors allow you to add music, text, transitions and filters, which is impossible to do in the standard Samsung gallery. However, they require more device resources.
Installing such applications is justified if you plan to create content regularly. For one-time trimming of one video, the system's capabilities are quite enough.
Remember that free versions of third-party apps often add watermarks that need to be removed by watching ads or purchasing a subscription.
Is it possible to trim a video without losing quality on a Samsung A10?
It is impossible to completely avoid loss of quality during transcoding, since the video shrinks again. However, using the “Save as a copy” mode and selecting a high bitrate minimizes visual differences from the original.
Why did the video become larger in size after trimming?
This is due to changes in compression parameters. The editor may use a different codec or bitrate that is less efficient than the one the camera used when recording.
How do I get the original back if I accidentally overwritten the file?
Unfortunately, selecting the "Overwrite" option deletes the original permanently unless you have a backup copy in the cloud (Google Photos, Samsung Cloud) or computer.
Does the Samsung A10 support 4K video trimming?
Technically, the A10 camera does not shoot in 4K (maximum 1080p). If you loaded a 4K video externally, the built-in editor may not be able to process it due to lack of processor power.
Where can I find the trimmed video after saving?
The file is saved in the same folder as the original (usually DCIM/Camera), but will have a mark in the name or a creation date corresponding to the moment of saving.