The location is also not of secondary importance. It must be carefully chosen and well thought out: it may be better to rely on an agency rather than doing everything independently.
For indoor shoots, you’ll need to evaluate the brightness, the potential need for additional lighting and the spaces. At the same time, it is important that the environment not be too personal: this does not work well as the scenes must be generic to have a good chance of selling.
You should also be careful regarding the presence of artwork or design objects that may require a release, which you should be able to remove to avoid the risk of not being able to use the clip for copyright reasons.
The best choice is to make a site visit before making a decision, so that you don’t come across any nasty surprises.
If, on the other hand, the location is outside, the inspection should be done at the same time as you intend to record the clip: in this way you can assess the brightness, any shadows and possible light effects, such as those that can be exploited at sunrise or sunset.
It is wise to take into account possible variations in weather conditions and think about how to act in case they do not meet expectations: if the shoot has been organized with actors, it is not possible to move the date at the last moment and it may be necessary to film even in less-than-ideal weather conditions.