You might wonder where the best place would be to download video editing programs for windows in which case you may want to try out the internet as there are plenty of resources available on the internet which you can use to your advantage. You need to realize that the internet holds the vast majority of pieces of information for anyone who may be after them from time to time, it all depends upon the issues you may be facing at the time and what, if at all anything would you be willing to do to get such a challenge met.
You need to keep in mind that there may be numerous programs of interest that may be available to you for which you could either find a solution for free or you may rather be expected to spend a bit of money on it to get things resolved.
Some of the best programs available online such as the filmora video editor are free which means you would not be expected to spend anything towards it or you will not be expected to pay any fees or charges to purchase the software license to a program that you may wish to download to convert your video files from one format to another. The onus would be upon you to do your research before settling for one program.