From the Music guide:
Required elements for the final presentation include:
the demonstration that the musical goals have been achieved, as evidenced by the:
musical development
communication of intention and purpose
the demonstration of musical communication appropriate to the chosen project, as evidenced in:
musicality
technical proficiency.
ok.... so what does this mean? In your video you need to show your musical intentions and what your role was in this CMM, how your project progressed, the final project performance (this can be the best extracts - does not have to be the whole performance) evaluation of your project's success by looking back at your goals. You must also include in here what resources you used whether audio / audio-visual and written source materials.
The most straight forward would be to use software such as iMovie, where you can add in pictures (plan) and other shots of rehearsals etc...and intersperse with short video clips evidence. Then you will record a narration (you may wish to add some subtitles at times)and add it on top of your visuals. Make sure to lower the track volume or cut it so we can properly hear your narration.
(Then you can delete this entire text box)