If the camcorder uses Micro SD cards and doesn't have a storage capacity limit then it will. Even if the camcorder is limited to only recognizing cards up to 64gb you will be able to use the card but it will only recognized and use half the storage capacity. Basically, you will have purchased a 128gb card but can only use 64gb. Hope this helps.
Im not sure about ur LG model but im using mine in a LG Aristo. I would "assume" it will work in all current LG models that have microSD slots and support higher thsn 32gb. Review ur model to find out more specifics before purchasing.
If it takes a micro SD then you can use it. I did find that there are a few devices that has a max on how many gigs can be placed in the micro SD slot.