Video Short test video (M6134035) infrared timelapse
OM-D E-M5, Panasonic 20mm F/1.7 pancake.
248 frames / 30fps playback = 8.3 second clip.
248 frames x 2.5 second interval = 620 seconds length.
620 / 8 = speedup factor of 75.
or 30fps x 2.5 = speedup factor of 75.
Can't recall the details exactly - probably an 850nm IR filter, 2.5s @ f2.0, iso 800, continuous, 2560x1920 jpeg. Resized and combined into a video using an old copy of VirtualDub.
No audio track.