Name: Cách khắc phục ngay lập tức vấn đề tỷ lệ khung hình 'Nano Banana' của Gemini khi tạo hình ảnh (How to INSTANTLY Fix Gemini 'Nano Banana' Aspect Ratio Problems When Creating Images)
Uploaded: 2025-09-24T16:04:32.000Z
Duration: 7 min 36 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

So there is a known issue when you're creating or editing a picture with Gemini 2.5 plus image preview also known as Gemini banana.

Vậy nên, có một vấn đề đã biết khi bạn tạo hoặc chỉnh sửa hình ảnh bằng Gemini 2.5 plus, còn được gọi là Gemini banana.

Essentially it is difficult or maybe impossible to get the correct aspect ratio that is based on your prompt.

Về cơ bản, việc xác định tỷ lệ khung hình chính xác dựa trên yêu cầu của bạn là rất khó khăn, thậm chí có thể là không thể.

Like in this example I want to get a 16 by 9 aspect ratio and yet the picture is square it should be a horizontal picture.

Trong ví dụ này, tôi muốn có tỷ lệ khung hình 16:9, nhưng hình ảnh lại là hình vuông. Nó nên là hình ảnh ngang.

How about this one I just provided a vertical picture and I want to add a hat into the cap and also I want to turn the picture to be a horizontal aspect ratio and yeah the final picture is still a vertical picture.

Thế còn cái này thì sao? Tôi vừa cung cấp một hình ảnh dọc và muốn thêm một chiếc mũ vào phần nón, đồng thời muốn xoay hình ảnh sang tỷ lệ khung hình ngang. Tuy nhiên, hình ảnh cuối cùng vẫn là hình dọc.

So this is a known problem with the Gemini not the banana and there is apparently no way you can fix this problem.

Vấn đề này là một vấn đề đã biết của Gemini, không phải của banana, và dường như không có cách nào để khắc phục vấn đề này.

And also what I find to be hilarious is this answer from Google health community which is official and basically there is a person having this problem and this is the answer which I find to be embarrassing and hilarious.

Và điều khiến tôi thấy thật hài hước là câu trả lời này từ cộng đồng sức khỏe của Google, một nguồn thông tin chính thức. Có một người gặp phải vấn đề này và đây là câu trả lời mà tôi thấy thật xấu hổ và hài hước.

So it says hi there and I understand your concern to guide Gemini towards a specific tone you should include explicit instructions within the prompt.

Vậy là nó chào bạn và tôi hiểu lo ngại của bạn về việc hướng dẫn Gemini theo một tông giọng cụ thể. Bạn nên bao gồm các hướng dẫn cụ thể trong lời nhắc.

Yeah that is a genius high-level answer that's just basically use that's exactly the things that people have tried and it doesn't work and it's just giving you this useless answer.

Đúng vậy, đó là một câu trả lời thông minh ở mức cao, nhưng thực chất chỉ là những điều mà mọi người đã thử và không hiệu quả, và nó chỉ đưa ra cho bạn một câu trả lời vô ích.

So not even Google knows how to fix this problem apparently but there is actually a general fix on how you can create a picture or edit a picture with a specific aspect ratio and the way to do that is basically to provide a blank picture let's say you want to get a 16 by 9 aspect ratio picture you have to create a blank or empty picture with 16 by 9 aspect ratio and then use that to reference or to guide Gemini about the ratio that it needs to produce so it is actually quite a reliable way to get a correct aspect ratio but the problem is that you have to create multiple different pictures with depending on the aspect ratios that you want to get so you have to use Photoshop or maybe some other third-party tool to be able to create those blank pictures but actually there is a simple way to get that kind of file using Gemini AI and here's how you can do that so let's go to Gemini first and basically we want to create an app that can produce some blank pictures based on any aspect ratio so this is the prompt that you can use and don't worry I'm going to provide the prompt in the video description down below it's a very long prompt because again we want to create an app so click tools click create sorry click canvas and just send the message now depending on what or when you're watching this video it could be there could be a different version of Gemini and therefore the app might look a bit different but basically it should be still serving the same purpose which is allowing you to create some transparent PNG pictures with blank content but you can specify the aspect ratio so I'm going to wait for a bit it should be able to create the tool any second now it is actually quite a simple tool and there you go so the tool has been created and it looked like this again the interface or the UI could be different but more or less the function is the same so here I can select the aspect ratio like 1 to 1 4 by 3 3 by 2 16 by 9 and 21 by 9 but I can also manually select the aspect ratio now in this case I want to create a 16 by 9 aspect ratio picture so I'll select this and then click download PNG and as you can see I have this file there is essentially empty there is nothing here it's just a fully transparent picture there is no info about it except for the aspect ratio now we are ready to use this file to guide Gemini Nano Banana so let's go to Gemini again and I will try to edit this picture sorry to create this picture again which is a photorealistic picture of a frog riding a train in the 1950s I'm going to copy it now I'm going to paste that into this and I'm going to upload that transparent sorry that blank picture it is actually transparent I'm going to click it click open so it's just nothing there just no info about it and this is the extra instruction that you must provide when creating a picture don't worry I'm going to provide you the guide on how you can edit a picture using this technique now click tools click create images and send the message so you will see that it is not creating a vertical or square picture anymore it is going to be a 16 by 9 or horizontal aspect ratio picture so I'll wait still generating the image it should be done any second now okay there you go so the picture is definitely not square not vertical it is actually horizontal although there is this black bar but it's easy to fix and you can also just redo the process and maybe the next iteration will give you a complete picture but overall it is not it is following the proper it is following the instruction the instruction which is creating the picture based on the aspect ratio that we provided now how about editing a picture so it's actually quite simple and I will try edit this picture again the cat and I'm going to add a red hat to the cat so I'm going to go back to Gemini I'm going to upload this picture and now I guess I have to download oh sorry I still have that transparent for us sorry about that I still have that blank transfer and file okay and if I don't have to you know download another file now I'm going to this again upload files and then select that transparent picture the blank picture and this is the prompt that I will use make the cat wear a red hat just this prompt and paste that and this is the extra instruction that I'm going to provide to Gemini and don't worry all the prompts should be available in the video description down below including the prompt to create the PNG picture generator so this is the prompt use the second picture as the reference for final aspect ratio and fill the area that wasn't shown in the original picture click tools click create images and send the message so it's not basically you can specify it could be a second third fourth or maybe the first picture depending on the order when you are uploading the picture to edit the so in this case the second picture was actually their transparent picture and that's why I said it is a second picture okay just wait and there you go so this is not a crop picture is actually the details that are created by Gemini because again the original picture sorry the original picture look like this and yeah it is vertical and now we have a original picture so that's basically how I can fix Gemini not banana unable to create a picture based on the specified aspect ratio again all the prompts should be available in the video description down below thank you so much for watching and I'll see you on my next video have a great day

Vậy là ngay cả Google cũng không biết cách khắc phục vấn đề này, nhưng thực tế có một giải pháp chung để bạn có thể tạo hoặc chỉnh sửa hình ảnh với tỷ lệ khung hình cụ thể. Cách thực hiện là cung cấp một hình ảnh trống có tỷ lệ khung hình mong muốn.ví dụ,

Cách khắc phục ngay lập tức vấn đề tỷ lệ khung hình 'Nano Banana' của Gemini khi tạo hình ảnh (How to INSTANTLY Fix Gemini 'Nano Banana' Aspect Ratio Problems When Creating Images)