Managing a video surveillance archive is a task that every owner of a modern security system faces. A situation often arises when the internal memory of a smartphone is full, or it is necessary to free up space on the memory card of the camera itself for new recordings. Owners of devices based on Android have several ways to solve this problem, but the process is not always intuitive due to differences in interfaces between different manufacturers.
Before taking active steps, it is important to understand the data storage architecture. The video stream can be saved directly in the memory of your mobile device, on SD cardinstalled in the camera, or in the cloud storage of your service provider. The algorithm of your actions critically depends on this. If you try to delete a file from your phone's gallery, thinking that you will clear the camera archive, you may be mistaken, since only a preview or cached copy is often stored on the device.
In this article we will analyze in detail all possible scenarios for clearing video recordings. You will learn how to work with popular applications like Yoosee, V380 Pro or Tuya Smart, as well as how to manage the file system directly. Deleting records from a cloud archive is often impossible without changing your data plan or expiration of the storage period, since this data is protected from accidental deletion by the provider itself. Let's look at each method step by step so that you can effectively manage your storage space.
Analysis of the type of storage of video recordings
The first step before deleting any data should be to diagnose where exactly the files are physically located. Modern video surveillance systems are flexible, and the same camera can record in three places simultaneously. If you don't identify the source, all your cleanup efforts may be in vain because no space will be freed up.
The most commonly used scheme is a hybrid one. Local recording to a memory card MicroSD is convenient because it does not require the Internet, but has a limited capacity. When full, old records can be overwritten automatically in a cyclic mode, but sometimes the system freezes and requires manual cleaning. Cloud storage (Cloud Storage) is safe in case the camera itself is stolen, but is usually limited in time (for example, it only stores an archive for the last 7 days).
⚠️ Attention: Before mass deletion, make sure that you are not erasing important evidence of the incident. Recovering data deleted from an SD card after a formatting command is extremely difficult, and sometimes impossible, without special equipment.
It is also worth considering that some applications cache video files for quick viewing in the smartphone gallery. These files take up space in the internal memory Android, but are not originals. Deleting them is safe and often necessary to speed up the system.
Deleting recordings through a mobile application
The most common and safest way to manage an archive is to use the official software of the camera manufacturer. Interfaces may differ, but the logic for working with files in the “Playback” or “Archive” section (Playback) is the same for most systems.
First, open the application and go to live viewing mode. There is usually a button at the bottom or top corner of the screen indicating the recording history. By clicking on it, you will see a calendar where dates with entries are marked in color. Select the desired day and time period. It is important here not to confuse the mode Live View and the archive mode.
In the archive viewing mode, additional control buttons often appear on the screen. Look for a trash can, scissors, or three-dot menu icon. In some applications, such as iCSee or CamHi, you need to click on the "Download" button to save the video to your phone, and only then delete it from the application's local storage, if such a function is provided.
- 📱 Open the application and go to the "History" section or "Play".
- 📅 Select a date on the calendar, marked with a color (usually blue or red).
- ✂️ Find the button for editing or highlighting files (often looks like a pencil or a check mark).
- 🗑️ Select unnecessary fragments and click the delete icon.
☑️ Check before deleting
It is worth noting that when deleting files directly through the app from the SD card, the process may take time. The camera must receive the command, process it and change the file table. Do not force close the application at this moment, otherwise a file system error may occur and the camera will require reformatting.
Working with the file system through a file manager
If the application is unstable or does not allow you to delete certain files, you can try direct access to the data. This method is relevant if the memory card is formatted in a readable format Androidand you have access to the root folder of the application or external drive.
Use the built-in explorer or a third-party file manager, for example ES Explorer or Files by Google. You need to find the folder that matches the name of your video surveillance application. Often the paths look like /Android/data/com.proizvoditel.camera/files/Video. However, modern versions of Android (starting from version 11) have greatly limited access to the folder /Android/data/ for security reasons.
If direct access is denied, try finding a folder in the root of the internal memory with the name of the camera brand. Inside there may be subfolders with dates or device names. Here you can safely delete files with the extension .mp4, .dav or .h264if you are sure that these are copies and not originals on the SD card.
| File extension | Description | You can delete? |
|---|---|---|
.mp4 |
Standard video, often copies for viewing | Yes (if it is a copy) |
.dav |
Dahua specific format, requires a player | Caution, may be original |
.h264 |
Raw video stream without container | Only if analysis is not needed |
.log |
Camera event log files | Yes, they take up little space |
What to do if the file is not deleted?
If the file manager writes "File busy" or "No rights", this means that the camera app is currently using this file or is blocking access. Try to completely close the application (unload from memory) through Android settings -> Applications -> Stop, and only then try deleting again.
Formatting the SD card for complete cleaning
When deleting individual files becomes impossible due to file system errors or the desire to clear everything at once, the only correct solution is formatting. This action completely erases all data on the media and creates a new file structure.
You can perform this operation directly in the camera application. Find "Storage Settings" or "SD Card Management" in your device settings. There will be a "Format" button. This method is preferable, since the camera itself will select the optimal cluster size and file system (usually FAT32 or exFAT), which will ensure stable recording in the future.
⚠️ Attention: Formatting destroys EVERYTHING data on the card without the possibility of recovery using standard means. Make sure you save important videos to another location before starting the process.
If the application does not see the card or cannot format it, you will have to remove the MicroSD card from the camera body. This may require a thin object (a paperclip) or complete disassembly of the device if the slot is hidden inside. After inserting the card into the adapter and connecting it to the computer or via an OTG cable to the phone, format it using the operating system.
Use High Endurance class memory cards. Conventional cards quickly break down due to constant cyclic re-recording of video. Special series of cards have been created for video surveillance cameras, for example, Samsung PRO Endurance or SanDisk High Endurance.
Management of cloud archive and subscription
With cloud storage the situation is more complicated. Files uploaded to the provider's servers (for example, cloud Reolink, Tapo Care or Imou Cloud) are not physically located on your phone. You cannot delete them “permanently” ahead of schedule, unless the tariff plan allows it.
Usually cloud services work on the FIFO (First In, First Out) principle - when the space runs out or the period expires (7, 30 days), the old video is automatically replaced with a new one. Trying to remove a file from the list in an application most often simply hides it from your view, but does not delete it from the security server.
To free up space in the cloud or stop data accumulation:
- ☁️ Go to the subscription settings in the application.
- 🚫 Disable the "Record to the Cloud" or "Cloud Storage" function.
- 📉 If there is an option "Delete all events", use it (not available in all services).
- 💳 As a last resort, cancel your subscription; the archive will become unavailable after the paid period expires.
It is important to understand the difference between deleting a notification and deleting a video. When you swipe a motion push notification, a video of that event is usually archived. You need to go to the event feed inside the application.
Clearing the cache and temporary files of the application
Even if you deleted all the videos, the application can take up gigabytes of space on the phone. This cache is temporary data that speeds up the app, but over time swells to enormous sizes. Clearing the cache is a safe operation that will not affect camera settings or passwords.
To clear it, go to the settings of your smartphone Android. Find the "Applications" (or "Applications and Notifications") section. Find your video surveillance application in the list. Inside the application menu, select "Storage" or "Memory".
There you will see two buttons: "Clear cache" and "Clear data". Be careful:
- Clear cache — deletes temporary files, thumbnails, stream buffer. Safe.
- Clear data —resets the application to factory settings. You will have to re-enter your login, password and set up notifications.
Regularly clearing the cache (once every 1-2 months) prevents interface slowdowns and frees up valuable space in the internal memory of the smartphone, which is often limited.
Why does the application write “Deletion error”, although there is no space is there?
This is a common problem when working with low-quality SD cards or a damaged file system. The camera cannot record new service information about file deletion. Solution: Format the card through the camera app. If the error repeats, replace the memory card with a better one.
Is it possible to recover video deleted from the camera?
From an SD card - theoretically yes, using software for data recovery on a PC, if new information is not written over it. From the cloud - only if there is a backup copy from the provider (rarely) or you have not permanently deleted the file. From a phone (from the gallery) - it’s difficult, but there are chances if you use special utilities immediately after deletion.
How to set up automatic clearing of old recordings?
Most IP cameras have the “Cycle Record” function. When the card is full, the system automatically erases the oldest file and writes a new one. Make sure that this mode is activated in the recording settings so as not to engage in manual cleaning.