Support. The videos recorded by the Mi Dash Cam 2 are in the format of MP4. The default video codec of the recorder is H.265.
If there is no sound when you are playing the videos recorded by the Mi Dash Cam 2, please refer to the following details:
1. Check whether the voice recording function is disabled;
2. Check whether the sound volume of the speaker is adjusted too low;
3. Restart the dash cam;
4. Reset the dash cam and check whether the voice recording function is normal;
5. If the above methods are useless, please contact the local after-sales service center.