They tend to not like loud noise so you will want to keep them away from loud noise. They don't like bright lights so you will need to figure out how fo film them quickly so they are exposed to it as quick and as least as possible.

Feeding them a day before might be enough time, but sometimes they are oportunistic eaters and will always be hungry. They can be very tempermental and change mood quickly. Keeping as stress free as possible is what you will need to do. So only handle the frog as necessary and try to keep your filming rather quick. Now not all of them are flighty and aggressive. Some are just plain lazy. If you're lucky you may get a lazy one and it won't be bothered as much. Care and handling should remain the same though.

They must always be handled with wet hands. Dampend with dechlorinated water. This keeps their skin from getting irritated as much and helps not to remove their protective mucus layer. They take time to grow depending on sex and some can get pretty large. Adult size within 5 to 8 months can be common. Always handle the frog carefully and gently so it does not see you as a threat.

It may sound childish, but talking to them helps with stress. If they are accustomed to your voice they will not be as stressed. They like familiar surrounding and sounds.

I'm not sure what other advice to give during filming. Just have the frog's best interest in mind.