I had this issue in the past as well doing a plant growing time lapse. And yes the WCOs are a pain with the time lapse. I couldn’t download then a friend reminded me about the SD card, I completely forgot about it, found it to be a .h264 file that my film editing tool was able to decompress. Wondershare Filmora, its not very expensive. There are also some free ones out there that the community informed me of;
Handbreak
VLC
WinFF
If you wanna check out the thread discussion it is here
Sorry to hear of your frustrations, hope this helps.