My Rendered Timelapse is Jerky or is Missing Frames
Your final footage seems to ‘jump’ from time to time as if frames were missing.
You left too large of gaps between exposures. This is tricky and requires an eye for it and experience. Some people will say you want to drag exposures with an ND filter to fix this – but usually you just want to decrease the time between shots. Save the ND for blurring things that need it like cars.
Your intervalometer isn’t properly in sync with your camera and causes missing frames. With some devices, especially ones that control exposure length, it’s easy to end up having some shots be longer or shorter than others unintentionally. Stand by your camera and make sure it’s actually triggering every time your intervalometer says it’s supposed to trigger.
Your camera isn’t writing the files fast enough and causes missing frames. There are a lot of things that can cause this. The most common is that there’s a big difference between your camera’s maximum ‘burst’ capacity and its normal data write speeds. Sometimes your first few dozen shots will be right and then the camera can’t write fast enough to keep up with the expected trigger. Buy a fast card, learn the maximum continuous shooting speed of your camera, and make sure you stay around for the first few dozen shots. Additionally, some settings such as sRAW and noise reduction can eat up processing power and slow down how fast the camera can take and write pictures. Save the noise reduction and shrinking for post!
Your intervalometer isn’t properly in sync with your camera and causes missing frames. Similar to solutions above.
Your camera isn’t writing the files fast enough and causes missing frames. Similar solutions to above.
Your battery died. Especially a problem at night or in the cold. Get a battery expander pack or buy batteries with a higher capacity.