add and store timecode of your choice into .mov files
Clips coming from a GoPro cam or other cams mostly not provide timecode with their media. Use tcAgent to resync movies for postproduction, allowing apps like FCP, Mediacomposer, Premiere Pro and others to sync rebatched clips at the right position in the timeline.
Using tcAgent is straightforward. Open a .mov file type a new starting timecode and save. Thats all. The timecode will be available instantly, there is no rendering process you have to wait for. Timecode can always be edited at any time with tcAgent.