Fix NanoBanana Sizing Issue How to Make Perfect 16:9 Thumbnails
Nano Banana always outputs an image with the input picture's aspect ratio, so a square input produces a square result regardless of the prompt.
Transcript
0:00 Hey guys, my name is Annie. I'm a tech consultant and in this video I will show you how sizing in Google's Nano Banana works. Practically I have a prompt here and I want to create a thumbnail for this video that I'm doing right now and I want to use one of my pictures for the thumbnail. However, the picture that I want to use doesn't have the correct sizing. So if I go to my computer and I choose the picture, you can see that my current picture is square. But I want Nano Banana to create 169 ratio picture in order for me to use it as YouTube thumbnail. If I click on run, it will take couple of seconds and then let's see the result.
0:46 What I'm expecting is that the result here result picture has the same sizing that the input picture had. Result picture is square and this mean that we cannot use this as YouTube thumbnail. And how to fix this issues? I actually try to use different prompts and I try to use a blank picture. for example, upload the black picture here and then ask to change the sizing of the first picture to the sizing of the second black picture that had the correct ratio. But what what was happening that the ratio was updated but also some parts of the black picture was shown in the first year. So the best way of managing this is just going to chat GPT sending your initial picture.
1:34 Here you can see the picture that is square and then asking chat GPT can you resize this picture to 69 and then when we have the correct picture we will just download that one and then we come back to Nano Banana we use exactly the same prompt here and then we will upload the picture with the sizing that we want the size that JPD created for us this one and then we will run it and let's see this is moment of truth again just how nano banana works it always outputs a picture with the sizing of input pictures here I have the picture with the right size you will do you will always use chat GPT or another LLM to do the resize sizing for the input picture and then you will use the correct size on your input picture and Nano Banana will do what Nano Banana does best.
2:46 It will create the visualization and also it will manage to insert text without have a good day. Bye.
