You need to have a set of timelapse images that you have already taken. Save these in their own separate folder somewhere on your computer. Do not rename the files so that LRTimelapse can easily read them in chronological order.

Select LRTimelapse from your applications. When it loads, choose your folder of timelapse stills from the list of available folders in the left hand column.

Select the initialize button in the top menu.

Select ‘Keyframes Wizard’ from the top menu. Using the slider under the timelapse preview, scroll through your timelapse and whenever you see a significant exposure change select the diamond symbol next to the highlighted still in the stills column.

Next to Keyframe Wizard, select the ‘Save’ button. This saves your keyframe information in the metadata so that you can transfer that information to Adobe Lightroom.

Open Lightroom and in the Library tab, select ‘Import’. Import your full folder of timelapse stills, the same photos you imported to LRTimelapse earlier. They should appear with crop and develop settings that have been pulled over from LRTimelapse.

Still in the Library tab, go to the Filter menu in the bottom right side. Select ‘LRT-All Keyframes’.

Go to the develop tab and edit your keyframe photos as you would edit photos normally. Remember to keep settings and exposures consistent across all keyframes.

Return to the Library tab in Lightroom. Select all of your keyframe images. From the top menu, select ‘Metadata’ and then ‘Save Metadata to files’.

Return to LRTimelapse and select the ‘Reload’ button from the top menu.

Now that your updated keyframe data is loaded in to LRTimelapse, select the ‘Auto Transition’ button to create a smooth transition of exposures between your keyframes.

Draw a square over the part of your frame that you believe to be the best and most consistent exposure reference for your clip. To do this, click and drag over the desired area in the timelapse preview window. LRTimelapse will recalculate the average brightness of your timelapse based on this reference. This helps with the accuracy of the next step.

Select the ‘Deflicker’ button from the top menu. Adjust the slider until the purple line that has appeared over the exposure value line is as smooth as possible.

Next to ‘Deflicker’, select the ‘Save’ button. This saves your keyframe information in the metadata so that you can transfer that information to Adobe Lightroom.

Return to Lightroom. In the Library tab return to the Filter menu and select ‘LRT Full Sequence’.

Select all photos in the sequence and from the top menu select ‘Metadata’ then ‘Read Metadata from files’.

Once your metadata has been read in to Lightroom, make sure you have the full folder of imported stills selected and then go to ‘File’ and ‘Export…’.

Select the LRTimelapse preset from the left hand menu.

Select LRTimelapse from your apps folder as the executable.

Select where you would like your file to be output to, such as the same stills folder they came from.

Name your export file.

Select Export.

Lightroom will inform you when the files have been rendered out to LRTimelapse.

Once your photos have rendered out of Lightroom, the ‘Render Video’ box will automatically appear in LRTimelapse. Return to LRTimelapse and make sure that your output file is named something you will remember and is going to be saved to your desired folder on your computer.

Next you will need to select your output settings. These are very much up to you, but if you’re a beginner here are our recommendations:

Codec: MP4 (H.264)

Output size: 1080p

Frame rate: 25

Speed: 1:1 (default)

Quality: High

Once you have chosen your settings, select ‘Export’.

Congratulations, you should now have a deflickered timelapse clip