Transcode AUKEY dashcam video
Dashcams record a raw MPEG-2 stream. This isn't typically playable using usual multimedia software.
First, make sure ffmpeg is installed:
sudo apt install ffmpeg sudo yay -S ffmpeg
The memory card from the dashcam should be mounted:
sudo mount /dev/mmc0 /mnt/mmc
To transcode to a standard H.264 encoded MPEG-4 file, use ffmpeg:
ffmpeg -i /mnt/mmc/AUKEY/movie/input_file.TS -c:v libx264 -c:a copy ~/Desktop/output_file.mp4
The resulting file will work fine with VLC or any other regular video player.