Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Miscellaneous Techniques › Martial arts › If this is for instruction
If this is for instructional purposes, then you probably don’t want a bunch of fast action sequences as would be favored for entertainment.
In instructional productions tell them what you’re going to show them, show them what you told them, tell them what you told them. IOW – talking head, focused on camera telling the technique and/or movements that will be demonstrated. Use cuts to the various motions and movements during this process.
Go through the entire presentation of moves in regular motion, then slow motion. Angles can be useful via second or even third camera to offer a 360 degree representation of the moves.
Reiterate via talking head and cuts to the movements to emphasize the series. Reverse angles showing the sparing partner POV might also help.
Then move to the next set and repeat the above.
At the end of the series you might consider reiterating each set with real time movements, followed up by slow motion movements.
In teaching or other instructional programs the mantra is actually: Tell them what you are going to tell (show) them, tell (show) them what you want to tell them, tell them what you told them. Repetition along with cuts to specific visual/audio elements of the program is what works in such productions.
If emphasis is on being small but being able to defend against a larger opponent you might consider focusing on the differace, but otherwise IMHO it should NOT be emphasized to prevent the viewer from forming assumptions that may not actually apply in real life experiences.
The best way to approach an instructional video, rather than a demonstration or entertainment production, would be to decide what forms and actions you are going to focus on, script what you want to say/show about each one, determine close ups and other cuts that will focus on the specifics, then work up a shot sheet to acquire those elements. Repeating each of the movements in the series several times and shooting from several angles could help in demonstrating the techniques and moves better.
General lighting using broad lighting systems, or soft lamps and floods, might help keep the overall lighting in line without developing harsh shadows. You will, of course, want your lights to be up high to avoid too many shadows showing on the walls, etc.
Individuals accomplished in the martial arts should be able to go through their moves in safe manner without posing threat or harm to the equipment or shooters, or themselves. They are, after all, usually practiced in non-full contact activities. A bit of preparation, with the cameras in their positions should allow for some intimate shots, even high kicks and perhaps jumps without causing harm.
Live sounds during the movements might be appropriate, but I would record the instructional phases with a mic system, perhaps in a quiet area while viewing the footage, using something like a Zoom H2 or such.
Hope this helps.