Blended in-camera and came out that way or in post processing?
"Blended in camera"? -- I wish my camera could do that. The steps involved were:
1- Compose the shot (with correct exposure)
2- Shoot a short video clip at 4K 60P
3- Shoot the time lapse (enough shots to cover the soundtrack segment at 30 FPS)
4- Shoot another short video clip at 4K 60P (the lighting and color changes rapidly during sunrise and sunset)
5- Render the time lapse in-camera to 4K 30P
6- Using Vegas pro, blend the time lapse clip with the best matching video clip and adjust the brightness and contrast of video clip to match the time lapse as required. Blending involves masking and feathering the video clip onto the time lapse clip. For the sunrises, I used a 2.5 stop hard edge graduated ND filter to balance the exposure.
The reason I tried this was that time lapse of ocean sunrises and sunsets always looked odd with waves crashing the shore rapidly (plus nobody else that I know of was doing this). Blending solved the problem. Then I explored what else I could do to blend slow motion with time lapse in an urban setting.
We are headed to Switzerland in May for 2 months. I will use this technique on some clips of a video I am currently planning - a 60 second Epic tour of Switzerland. I have the soundtrack already generated and I am working on the storyboard and planning the shooting locations. I estimate that it will take about 6 weeks to shoot the 40 clips I need for the 60 second video.
Who says retirement is boring?