120fps Vlog, Instructions in the Post (Patreon)

Bizarre experiment here, this is (in theory) a 120fps vlog that works within the limitations of YouTube to deliver some extremely rare ultra-high-framerate content and does so with a subject matter really capitalizing on the strengths of the format: a vlog sitting on the lawn rambling without script or purpose.

To watch the video "correctly" it will need to be played at 2x speed. If you have a high-frequency monitor this should (again, in theory) enable you to watch the video at an actual 120fps.

Production-wise the footage was recorded at 120fps off-speed with a timebase of 60fps. Audio was recorded in-camera and is attached, out-of-sync, to the raw video file. In post-production the footage was first re-interpreted into a 120fps timebase and dropped into a 120fps timeline for editing.

Here it's worth noting that Resolve interprets the video and audio framerates independently, thus changing the timebase of the video track re-syncs the audio and video. Despite the off-speed recording, the Pocket 4K is remarkably consistent, with minimal drift for shorter videos.

Once the HFR editing was done a 60fps timeline was created, the first timeline was nested inside, and then rate-stretched to 50% speed preparing the video and audio for the YouTube workaround. The camera footage was warp-corrected for the wide-angle lens, and a grade was applied.

This process did introduce a number of artefacts into the audio track that are apparent even when listening to the YouTube video at the rate-corrected 2x speed, as the audio was slowed to 50% speed, compressed, uploaded to YouTube, and then processed, effectively "baking in" the crackly nature of slowed audio.