some free, some retail, some better than others. There are many converters available on the net. No method is set in stone and always works but best bet would be to convert the DJI Mavic Air 4K files to MPEG-2 in proper settings before importing into After Effects. And this article will present you a workaround to load and edit DJI Mavic Air 4K in After Effects in detail. Many popular video editors including After Effects can't handle 4K video files well. But as we know, the majority of playback, editing work is still being finished in 1080p. The hot feature of DJI Mavic Air is that it can record 4K videos. Q: ' Does anyone know why After Effects cannot open the 4K video from DJI Mavic Air? Thanks for any replies!' Editing DJI Mavic Air 4K Video in After Effects