How can I extend the length of recording ?
It depends on the camera, if that option is available.
Look for Power Manager in the settings.
almost there. Settings depending on camera, Customize Recording, Clip length set from 5 sec. to 120 sec. and there you go. good luck. This is how you do it for a S340.
Ty!
It is also worth trying a middle length first, rather than the longest setting, so you can see whether it covers the whole event. Longer clips use more battery and storage, so a moderate setting is often a good balance for everyday use.