JVC GC-XA2 User Manual page 18

Endless Recording (video mode only)
The video les are automatically divided every 15 minutes and saved.
If there is not enough space in the SD card, the oldest le is deleted and the recording continues
while the battery lasts.
Press MENU in recording mode.
Press < or > to select "Video Mode
Options", and press SET.
Press < or > to select "Endless REC", and
press SET.
Press Record to start recording.
Press Record again to stop recording.
Notes
If "Video Resolution" is set to "Full HD(1080p60)" or "Full HD
(1080p50)", the "Endless recording" is not available.
18 Recording