Loop recording keeps recent driving footage available without requiring you to manually clear normal recordings. The 70Mai Dash Cam records in short clips and reuses storage as it fills, while important event recordings may be handled separately depending on the model and settings.
How Loop Recording Works
This system keeps the card filled mainly with recent driving history instead of stopping simply because normal recording storage has reached capacity.
Loop recording is designed to continue while the dash cam has power and its storage remains usable. A storage condition, card limitation, or other recording interruption can still prevent new footage from being saved.
Clip Length
Many 70Mai models divide footage into short segments. Available durations can vary, with some models offering choices such as 1, 2, or 3 minutes.
[compare] Shorter Clips | Smaller individual files and easier isolation of a specific moment, but more files to browse. Longer Clips | Fewer, larger files and fewer segments to manage when reviewing or exporting footage. [/compare]Changing clip length mainly changes file organization. Under the same recording quality settings, it does not substantially change the total amount of video the card can hold.
Choose Compatible Storage
Storage requirements vary between 70Mai Dash Cam models, so card capacity and speed compatibility should be checked for the specific camera.
[checklist] * Use a high-quality microSD card intended for frequent recording and rewriting * Confirm that the capacity is supported by your 70Mai Dash Cam model * Confirm that the card meets the speed rating required by the model * Format the card in the dash cam when required before normal use [/checklist]Common capacities include 32 GB, 64 GB, 128 GB, and larger cards on models that support them. A larger compatible card increases how far back you can review footage before older normal recordings are overwritten.
[compare] 32 GB | Shorter recording history; more suitable for lighter recording needs when supported. 64 GB | More retention time than a smaller card under the same recording settings. 128 GB or Larger | Longer recording history for frequent or extended driving when the capacity is supported by the camera. [/compare]A low-quality, worn, or incompatible card can contribute to missing recordings, file problems, or unreliable overwriting.
What Affects Recording Time
There is no single recording-time figure that applies to every 70Mai Dash Cam. Storage use depends on the recording configuration.
- Resolution: higher-resolution video generally uses more storage.
- Bitrate: a higher video bitrate creates larger files.
- Recording features: saved audio and additional recording data can affect stored files.
- Available card capacity: more usable storage provides a longer recording history under the same settings.
For practical use, it is more useful to think about how many recent hours or drives remain available before loop recording reaches the oldest clips.
Normal and Protected Clips
Normal Recordings
- Created continuously during normal driving.
- Usually replaced oldest-first when loop storage fills.
- Suitable for ordinary driving footage that does not need permanent storage.
Emergency or Locked Recordings
Depending on the model, an important recording may be created or protected when:
- The G-sensor detects a sudden impact or shock.
- A manual emergency or lock control is used.
- A supported parking-surveillance feature detects an event.
Hard braking, potholes, rough roads, or other strong movement can sometimes create event recordings when sensitivity is set high.
[warning] Do not treat protected or emergency storage as permanent archival storage. Save important footage somewhere separate as soon as practical. [/warning]The way protected storage is managed can vary by model. If many event clips accumulate, review and save anything important rather than assuming every protected recording will remain available indefinitely.
G-Sensor Sensitivity
If your model allows G-sensor adjustment, sensitivity affects how easily an impact creates an emergency recording.
[compare] High Sensitivity | More movement may trigger protected recordings, including bumps or rough-road events. Medium Sensitivity | A practical starting point when you want a balance between event detection and unnecessary locked clips. Low Sensitivity | Requires stronger movement before an event is triggered and can reduce false triggers. [/compare]If normal road bumps create too many event clips, consider a lower available sensitivity. If significant impacts are not being identified as expected, a higher setting may be more appropriate.
Review and Save Recordings
On models with app and Wi-Fi control, recordings can be reviewed and copied from the dash cam without waiting for loop recording to reach them.
[step] 1. Power on the dash cam. 2. Enable its Wi-Fi connection or hotspot if your model requires it. 3. Connect your phone to the dash cam as required by the model. 4. Open the 70Mai app and browse the available recording categories. 5. Find the required clip by recording type and time. 6. Save important footage to your phone before it can be replaced on the dash cam. [/step]Depending on the model and app version, normal driving, emergency, and parking recordings may appear in separate categories.
A copy saved to your phone is separate from the dash cam's loop-recording storage. It can be kept even if the original clip on the memory card is later overwritten, unless the saved copy itself is deleted.
Consider saving footage involving:
- Collisions or near-collisions.
- Road incidents or dangerous driving.
- Parking events that may be important later.
- Unusual or memorable moments you want to keep.
Protect Important Evidence
When an important event occurs, preserve more than just the exact moment. Footage immediately before and after an incident may provide useful context.
[step] 1. Use the emergency or lock function promptly if your model provides one. 2. When it is safe to review the camera, locate the relevant recording and nearby clips. 3. Save the required clips through the available app or storage workflow. 4. Keep another copy in longer-term storage if the footage is important. 5. After confirming the backup, old footage can be cleared from the dash cam if storage space needs to be recovered. [/step]Loop recording is intended for rolling storage, not indefinite preservation of important footage.
Parking Mode Storage
Supported parking-surveillance modes can create additional recordings while the vehicle is parked. Depending on the model, recordings may be triggered by impact, vibration, motion, or another supported parking feature.
Parking footage can increase storage use, especially in locations with frequent movement or repeated minor triggers.
- Choose an appropriate parking or impact sensitivity if the setting is available.
- Review parking recordings periodically and keep only clips that matter.
- Clear unneeded protected parking events after important footage has been saved.
- Consider a larger compatible card if parking recording is used heavily and your model supports the capacity.
Format and Maintain the Card
Dash cam storage is written and overwritten repeatedly. Over time, a card can wear or its file system can become less reliable.
[dosdonts] Do: Back up important recordings before formatting Do: Use the dash cam's formatting function when formatting is required Do: Keep a regular storage-maintenance routine appropriate for your usage and model Do: Replace a card that shows signs of deterioration or unreliable recording Dont: Format before confirming that important footage has been copied elsewhere Dont: Rely indefinitely on an aging card that repeatedly shows storage-related symptoms [/dosdonts]Formatting removes existing files and creates a clean storage structure for the camera. The appropriate formatting interval can vary with the model and recording load, so there is no single schedule that fits every 70Mai Dash Cam.
[warning] Formatting removes normal, emergency, and parking recordings stored on the card. Save important clips first. [/warning]Basic Storage Checks
[troubleshoot] Problem: The dash cam repeatedly reports a card or formatting condition Cause: The card may be incompatible, worn, or have a file-system condition Fix: Save important footage, format the card using the dash cam, and use a compatible high-quality card if the condition continues Problem: Recording unexpectedly stops, restarts, or contains gaps Cause: The storage card may not be writing reliably or may no longer be suitable for continuous recording Fix: Back up important clips, format the card, and check again with a known-good compatible card if needed Problem: Only a small amount of older driving footage remains Cause: Loop recording may already have overwritten older normal clips, or the available capacity may provide a short retention window Fix: Check the card capacity and recording settings, then use a larger supported card if a longer recording history is needed Problem: Many unnecessary emergency recordings accumulate Cause: G-sensor or parking sensitivity may be triggering on minor movement Fix: Review and clear unneeded events after backup, then adjust the available sensitivity setting if appropriate [/troubleshoot]If the same behavior continues with a compatible known-good card, the cause may involve the dash cam or its software rather than the storage card alone.