Some good formats to use for editing are:
You can use Adobe Media Encoder to reformat your media. In fact, the file size of formats that work best when editing are usually a lot larger than what you’d want the final file size to be. The formats you should edit with do not have to be what you render the final video to, either. However, there’s a way you can reformat your media beforehand in order to help make your editing move along faster. Basically, some of the video formats that your footage may already be in could make it more difficult for your computer to edit. You might not know how the format of your footage actually affects the speed of your editing process. It’s only so Premiere can show you this preview of your video while you edit it. This also has no effect on the final rendering of the video. You can only use the ⅛ or 1/16 options if your video is in 4K. If you choose ½ or ¼, which you can pick if your video is 1080p, it will reduce the resolution by that amount, giving your computer less work to do.