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Wednesday, October 22, 2025

How I Constructed a Comedian Generator with OpenAI and Gemini


We have now all loved comics sooner or later, be it superhero comedian books, comics in newspapers, or manga from Japan. Comics are temporary, expressive, and encapsulate storytelling inside just some frames.  However what if there’s a new twist: what should you might use a comic book generator to show a brief video clip into a comic book strip of 4 panels with speech bubbles, expressive caricatures, and humour?

That is the thought behind Comedian Generator or Comedian Battle, not simply one other content material generator. Nonetheless, a system I designed that takes a video clip and a brief, temporary inventive thought and turns it right into a completed cartoon picture. It’s greatest to think about it as an imaginative partnership between two minds: one “writing the screenplay” and the opposite “drawing the comedian.”

On this article, I’ll information you thru the journey of Comedian Battle, explaining the way it works, what parts are required, which programming language to make use of for coding, the challenges I encountered in the course of the course of, and the place the undertaking can go from right here.

The Idea of Comedian Battle

All inventive functions hinge on an ordinary method:

  • Enter: What the person provides.
  • Transformation: How the system operates and furthers it.
  • Output: The distillation of the expertise that feels full and polished.

For Comedian Battle, the method seems to be like:

  • Enter:
    • A brief video (like a YouTube brief).
    • A one-line inventive thought (“Change the preventing within the clip with exams”).
  • Transformation:
    • Systemically, the system analyzes the video, rewrites the thought right into a full comedian screenplay, and strictly enforces guidelines (layouts, type, humor).
  • Output:
    • A 4-panel cartoon in PNG format with dialogue balloons and captions. 

What makes this enjoyable? As a result of it’s personalised. As an alternative of random comics, you’ll obtain a reinterpretation of the very clip you simply chosen, tailor-made round your one-line thought.

Contemplate a battle scene in a film, echoing a scholar morphed right into a goofy classroom battle about homework. This concoction of relatable visuals – acquainted usernames with a stunning, personalised comedian rewrite twist – is what makes Comedian Battle addictive.

How Comedian Battle Works

The pipeline is deconstructed as follows:

1. Inputs from the Consumer

The method begins with two easy inputs:

  • Video URL: Your supply materials (ideally YouTube shorts of round 30-40 secs).
  • Thought Textual content: Your twist or theme.

Instance:

Video URL: https://www.youtube.com/shorts/xQPAegqvFVs

Thought: As an alternative of violence, substitute it with exams, like Yash saying

“Violence, violence, I don’t like violence, I keep away from… however violence likes me.”

That is all of the person has to offer, no advanced settings, no sliders.

2. The Storyteller’s Job (Gemini)

The primary a part of the pipeline is what I check with because the Storyteller. That is the place the uncooked enter of a YouTube video hyperlink and a short thought you typed in will get remodeled into one thing structured and usable.

If you paste a video URL, Gemini seems to be on the clip and extracts particulars:

  • What’s taking place within the scene?
  • The temper (tense, dramatic, lighthearted).
  • How the characters are transferring and interacting.

Then it takes your one-liner (for instance, “substitute violence with exams”) and expands it into a comic book script.

Now, this script isn’t simply random textual content. It’s a screenplay for 4 panels that follows a strict algorithm. These guidelines have been explicitly written into the system immediate that guides Gemini. They embody:

  • At all times a 2×2 grid (so each comedian seems to be constant).
  • Strictly a comic book ebook type (no lifelike rendering of characters).
  • Dialogue written as meme-like speech bubbles.
  • Captions added for further punchlines or context.
  • Nothing cropped, no cut-off textual content, and no dangerous references to copyrighted names.

By baking these constraints into the system immediate, I made certain the Storyteller at all times produces a clear, dependable screenplay. So as a substitute of asking the picture generator to “simply make a comic book,” Gemini prepares a completely structured plan that the subsequent step can observe with out guesswork.

3. The Illustrator’s Job (OpenAI / Imagen)

As soon as the script is prepared, it’s handed on to the Illustrator.

This half doesn’t need to interpret something; its single duty is to attract precisely what the Storyteller described.

The Illustrator perform is addressed by a picture technology mannequin. In my setup, I’ve OpenAI’s GPT-Picture-1 as my first alternative, and Google’s Imagen as a secondary fallback if the primary instrument fails.

Here’s what it seems to be like in apply:

  • The Illustrator receives the screenplay as one lengthy, detailed immediate.
  • It then renders every panel with the characters, poses, background, and speech bubbles precisely as laid out.
  • If OpenAI is unavailable, the identical immediate will get despatched to Imagen routinely, so that you at all times get a completed comedian.

This separation is the important thing to creating Comedian Battle dependable.

  • Gemini thinks like a director: it writes the script and units the stage.
  • GPT-Picture-1 or Imagen, they draw like artists, they observe the directions with out making an attempt to alter something.

That’s why the output doesn’t really feel messy or random. Every comedian comes out as a correct four-panel strip, styled like a meme, and matches your thought virtually one-to-one

4. Output: The Last Comedian

The result’s a 4-panel cartoon picture:

  • Panels are clearly framed.
  • Characters in the precise poses.
  • Speech bubbles with the precise textual content.
  • Humour intact.

And better of all, it appears like a completed comedian you can be printed on-line.

Applied sciences Behind Comedian Battle

Right here’s what powers the system:

  • Language & Utilities
    • Python is the glue language.
    • dotenv for API key administration.
    • Pillow for picture dealing with.
    • base64 for processing picture information.
  • The Storyteller (Evaluation + Prompting)
    • Gemini (multimodal mannequin): reads video + expands person enter.
  • The Illustrator (Picture Era)
    • OpenAI GPT-Picture-1 (a DALL·E variant).
    • Fallback: Google Imagen (for resilience).

This twin method ensures each creativity (from the storyteller) and visible consistency (from the illustrator).

Implementation

Now, let’s look into the precise implementation.

1. Configuration

@dataclass

class ComicGenerationConfig:

    primary_service: str = "openai"

    fallback_service: str = "imagen"

    output_filename: str = "photographs/generated_comic.png"

    openai_model: str = "gpt-image-1"

    imagen_model: str = "imagen-4.0-generate-preview-06-06"

    gemini_model: str = "gemini-2.0-flash"

The place the fashions have been used within the following method:

  • OpenAI is the default illustrator.
  • Imagen is the backup.
  • Gemini is the storyteller.

2. Constructing the Screenplay

def extract_comic_prompt_and_enhance(video_url, user_input):

    response = gemini_client.fashions.generate_content(

        mannequin="gemini-2.0-flash",

        contents=[

            Part(text=enhancement_prompt),

            Part(file_data={"file_uri": video_url, "mime_type": "video/mp4"})

        ]

    )

    return response.textual content

This step rewrites a obscure enter into an in depth comedian immediate.

3. Producing the Picture

OpenAI (main):

consequence = openai_client.photographs.generate(

    mannequin="gpt-image-1",

    immediate=enhanced_prompt,

)

image_bytes = base64.b64decode(consequence.information[0].b64_json)

Imagen (fallback):

response = gemini_client.fashions.generate_images(

    mannequin="imagen-4.0-generate-preview-06-06",

    immediate=enhanced_prompt,

)

image_data = response.generated_images[0].picture

Fallback ensures reliability; if one illustrator fails, the opposite takes over.

4. Saving the Comedian

def save_image(image_data, filename="generated_comic.png"):

    img = PILImage.open(BytesIO(image_data))

    img.save(filename)

    return filename

This methodology writes the cartoon to disk in PNG format.

5. Orchestration

def generate_comic(video_url, user_input):

    enhanced_prompt = extract_comic_prompt_and_enhance(video_url, user_input)

    image_data = generate_image_with_fallback(enhanced_prompt)

    return save_image(image_data)

All of the steps tie collectively right here:

  • Extract screenplay to Generate comedian to Save output.

Demo Instance

Let’s see this in motion.

Enter:

Video URL Input
  • Thought: “Change violence with exams.”
Creating/Editing Prompt

Generated screenplay:

  • Panel 1: Hero slumped at a desk:  “Exams, exams, exams…”
  • Panel 2: Slams ebook shut: “I don’t like exams!”
  • Panel 3: Sneaks away quietly: “I keep away from them…”
  • Panel 4: A large ebook monster named Finals: “…however exams like me!”

Output:

A crisp 4-panel comic, ready to share.
A crisp 4-panel comedian

Challenges in Constructing Comedian Battle

No undertaking is with out hurdles. Listed below are some I confronted:

  • Obscure Inputs: Customers have a tendency to provide brief concepts. With out enhancement, outputs look bland or obscure as a consequence of restricted info. Answer: strict screenplay growth.
  • Picture Failures: Generally picture technology stalls. Answer: automated fallback to a backup service.
  • Cropping Points: Speech bubbles bought lower off. Answer: express composition guidelines in prompts.
  • Copyright Dangers: Some clips reference well-known films. Answer: auto-removal of film names/manufacturers within the screenplay.

Past Comedian Battle

Comedian Battle is only one use case. The identical engine can energy:

  • Meme Turbines: Auto-generate viral memes from trending clips.
  • Academic Comics: Flip boring lectures into 4-panel explainers.
  • Advertising and marketing Instruments: Generate branded storyboards for campaigns.
  • Interactive Storytelling: Let customers information tales panel by panel.

Briefly, something that mixes humor, visuals, and personalization may gain advantage from this method.

My DHS Expertise

Comedian Battle began as one among our proposals throughout DHS, and it’s one thing very private to me. I labored with my colleagues, Mounish and Badri, and we spent hours pondering collectively, tossing concepts and ideas on the market, rejecting concepts, and laughing at issues we got here up with, till we lastly discovered an thought we thought we might actually do something with: “How about we take a brief video and make a comic book strip?”

Comic Wars 1
Comedian Wars DHS 2025

We submitted our thought, incognizant of what would occur… and we have been shocked when it bought chosen. In the end, we needed to create it, every bit by piece. It entailed many lengthy nights, a number of debugging, and loads of pleasure each time one thing ‘labored’ the best way we needed it to. Seeing our thought transfer from simply an thought to one thing actual was actually among the best emotions ever.

Response from People

What we witnessed, after we let it unfastened, was nicely price it, as all of the responses have been constructive. Folks saved telling me it was nice, and that they have been intrigued by the thought and the method of how we arrived on the thought after which made it occur. 

Comic Wars 2
Comedian Wars DHS 2025

Maybe essentially the most stunning half for me was how individuals started to make use of it in methods I by no means thought-about. Dad and mom started to make comics for his or her kids, actually turning mundane little tales into one thing particular and visible. Others began exploring and experimenting, pondering of essentially the most wonderful prompts after which seeing what occurred subsequent. 

For me, that was essentially the most thrilling half, seeing individuals get enthusiastic about one thing we created after which go and create one thing even cooler, and to see this little thought second flip into one thing like Comedian Battle was wonderful.

Conclusion

Constructing Comedian Battle was a lesson in orchestration, splitting the job between a storyteller and an illustrator.

As an alternative of hoping a single mannequin “figures all the pieces out,” we gave every half a transparent position:

  • One expands and constructions the thought
  • One attracts faithfully

The result’s one thing that feels polished, private, and enjoyable.

And that’s the purpose: with only a brief video and a foolish thought, anybody can create a comic book that appears prefer it belongs on the web’s entrance web page.

Incessantly Requested Questions

Q1. What do I must generate a comic book?

A. A YouTube Quick hyperlink (~30–40 sec) and a one-line thought. The system analyzes the clip with Gemini, expands your thought right into a 4-panel screenplay, after which the picture mannequin attracts it.

Q2. Which fashions are used?

A. Gemini drafts the 4-panel script. GPT-Picture-1 attracts it. If OpenAI fails, Imagen is used routinely. This separation retains outcomes constant.

Q3. How do you keep away from copyright points?

A. The screenplay removes model and character names, avoids likenesses, and retains a stylized comedian look. You provide movies that you’ve got the precise to make use of.

Hello, I’m Janvi, a passionate information science fanatic at present working at Analytics Vidhya. My journey into the world of knowledge started with a deep curiosity about how we are able to extract significant insights from advanced datasets.

Login to proceed studying and revel in expert-curated content material.

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