Should I Change the Video Title After Posting?

If you have an idea for a better title, it will likely improve the viewership growth for that video if the change leads to a higher impressions click through rate. However, bear in mind that YouTube takes some time to process the change that was made so that your video can settle into new recommendations that were adjusted accordingly with your updated title. Check after a day or so to see if the impressions click through rate was affected positively or negatively.