Better performance while editing = Playback > Proxy Mode > Half (or Quarter) Resolution
tutorial = https://youtu.be/S2yxFcm-te8?t=43s
open Resolve.
choose the Media tab at bottom, then Import media (drag the audio and video files in)
Select all media, right click, select “New Multicam Clip Using Selected Clips…” and choose “Sound” as the Angle Sync
NOTE: if syncing with "Sound" does not work for another project of yours (it should work for the example files I gave you): click on each file, view the waveform, and add a "Mark In" by pressing "i" to each clip at the clap board and sync using "Mark In"
right click the new multicam clip, select “New Timeline Using Selected Clips…”
choose the Edit tab at bottom (and make sure playhead is at the beginning)
click on in the top right corner if you don't see two viewers (monitors)
change the left viewer (monitor) panel from Source to Multicam
choose hold Option (Mac) or Alt (PC) and click the audio “angle” (still has a red box)
choose hold Option (Mac) or Alt (PC) and click the first video angle (the video angle will now have a blue box and the audio "angle" will have a green box)
to “direct” = press play and choose camera with the mouse or number keys (don't ever choose the audio "angle" ... and note, you will leave on) ... you don't need to use the option key any more!
after you have played through the hole thing and changed camera angles (in number 10 above), you may want to adjust when a camera change occurs (you may have been a bit late or early) ... so in Selection Mode hover between two clips until you see the Roll Edit cursor click and drag left or right
When you are done: Deliver tab at bottom and choose a preset such as YouTube (or use MPEG-4 as container, H.264 as compression, AAC for audio)
To expand multicam clip to edit cameras/audio individually (to color grade or adjust sync):
right click on multicam clip in timeline, select “Open in Timeline”
to exit expanded view: double click timeline name in bottom left (e.g. Timeline < Multicam)
