Converting incompatible videos to import into LumaFusion
Handbrake is a free app on Windows and Mac that can convert a wide variety of video formats to .mp4 files compatible with LumaFusion. However, the default Handbrake settings do not work consistently.
The Handbrake settings we recommend when converting files to edit in LumaFusion are:
Format: MP4 file
Video Encoder: H.264 (x264)
Constant Quality: RF:22
Framerate: Same as source (constant frame rate selected)
Profile: Main or High
Additional Options: keyint=60
You'll need to type in the keyint=60 into the Additional Options text field. The actual value should be around 2 times the frame rate of the video (so, keyint=50 for a 25fps file). This will create a keyframe every 2 seconds, making seeking much better on iOS and in LumaFusion. You could also set to around 1 second (keyint=30 or keyint=25) for even better seeking, but it seems have diminishing returns and a larger file size.