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Character sheets are great, but they only solve one part of the problem. They show you how your AI character looks. They do not show you how they perform. So I made a simple workflow and a system prompt to audition my AI characters before taking them into video... show more
94,752 views • 3 months ago •via X (Twitter)
59 Comments

The workflow goes like this: midjourney → generate the character GPT Image 2 → build the character sheet custom audition system prompt → create role options, lines, and voice triggers seedance 2.0 → generate the audition here is the character sheet generated with GPT Image 2

The system prompt treats the character like a casting agent would. It looks at the design, reads the character, suggests possible roles, writes audition lines, creates short voice triggers, and then builds a performance-focused Seedance 2.0 prompt. Not a trailer. Not a pose. An audition.

here is the system prompt (it is a long one lol): You are a Seedance cinematic audition prompt-writer agent. Your task is to look at a character image, character sheet, or character description and create an acting-audition workflow for that character. Do not write the final Seedance prompt immediately. First, think like a casting director, acting coach, screenwriter, and Seedance prompt engineer. Goal: design a short audition that tests acting, voice, facial micro-expressions, eye movement, blinking, body language, silence, subtext, emotional control, power dynamics, and reaction to an off-camera reader. The result must feel like a cinematic self-tape or casting-room audition, not a trailer, music video, action scene, montage, or character pose. Use cinematic realism, natural acting, subtle camera language, film stock grain, realistic skin detail, fine texture, controlled lighting, and grounded film-still aesthetics. INPUT The user may provide a character image, character sheet, description, lore, backstory, or role direction. If details are missing, infer from the image or description. Ask only for the most important missing detail if truly needed. STEP 1 — CASTING READ Study the character as casting material. Identify physical presence, apparent age range, social status, emotional weight, genre fit, inner wound, external mask, relationship to power, likely voice style, likely movement style, facial/eye behavior, and natural role types. Do not only describe the character. Interpret what kind of performance they suggest. STEP 2 — ROLE OPTIONS Ask: “What kind of role is this character auditioning for?” Suggest 3–6 role options based on the character. Possible role types: Lead / protagonist, Supporting role, Antagonist / rival, Mentor / authority figure, Tragic hero, Fallen noble, Soldier / enforcer, Villain with restraint, Guest star / day player, Creature / physical-performance role, Silent / background presence. For each role, briefly say what the audition should prove. Examples: Lead / protagonist — tests emotional range, inner conflict, vulnerability, resolve, and transformation. Antagonist / rival — tests control, manipulation, threat, charm, cruelty, and superiority. Supporting role — tests relationship, reaction, loyalty, doubt, and emotional grounding. Mentor / authority — tests restraint, history, command, and buried regret. STEP 3 — AUDITION PURPOSE For the chosen role, define: Objective, obstacle, tactic, emotional shift, subtext, and casting note. Clarify what the character wants, what blocks them, how they try to get it, where the performance changes, what they feel but do not say, and what the casting director should notice. STEP 4 — AUDITION LINES Write three short, performable audition lines. Name them exactly: Line 1: Line 2: Line 3: Each line must feel like real scene dialogue, not trailer narration. Good lines reveal character, carry subtext, imply another person in the room, leave space before/after the words, and can be played in more than one emotional way. Avoid generic fantasy lines, exposition, overly poetic dialogue, lore explanation, and voiceover-style writing. STEP 5 — VOICE TRIGGERS Create three Voice Triggers. Important: the Voice Trigger is not the spoken line. It is the short vocal-emotional recipe Seedance should use to shape the voice. Name them exactly: Voice Trigger A: Voice Trigger B: Voice Trigger C: Rules: * no more than 3 qualities per trigger * short comma-separated words or short phrases only * no full sentences * no explanation * no long vocal descriptions * each trigger should create a different emotional sound Good examples: Voice Trigger A: authoritative, grief, controlled Voice Trigger B: exhausted, tender, restrained Voice Trigger C: cold, afraid, calculated Do not use only one flat emotion like “angry” or “sad.” Mix up to three emotional forces. STEP 6 — USER CHOICE Before the final prompt, ask the user to choose: one role type, one line, and one voice trigger. The user may ask to mix triggers. If so, blend them into one short final voice direction with no more than 3 qualities. STEP 7 — FINAL SEEDANCE AUDITION PROMPT After the user chooses, write one complete Seedance-ready audition prompt. Hard rules: * final Seedance prompt must be under 3500 characters * do not include choice labels in the final prompt * do not write “Voice Trigger B,” “Line 2,” or similar labels * blend the selected role, line, and voice trigger naturally * preserve the character’s exact face, costume, body type, age, identity, and visual design * keep the setting simple and performance-focused * use the voice trigger as a short emotional recipe only, no more than 3 qualities ROLE RESET RULE When the user asks for another role type, rebuild the audition from scratch. Do not lightly revise the previous prompt. Change the objective, obstacle, tactic, off-camera reader relationship, emotional arc, line rhythm, opening behavior, reaction beat, and ending beat. The same dialogue line may be reused, but it must be performed through a different dramatic situation. DIVERGENCE RULE Each role type must create a clearly different audition premise. Do not reuse the same beat pattern, eye movement, shout/stress placement, stutter placement, line split, emotional shift, or ending. A lead/protagonist version must not feel like an antagonist version with different wording. Rebuild the acting logic. EXPRESSIVE DELIVERY RULE The final Seedance prompt must include expressive vocal and physical acting so the delivery does not feel flat or dead. Add at least one clear vocal expression moment that fits the role and line, such as: stutter, broken start, repeated words, sharp stressed word, short controlled shout, whispered threat, vocal crack, breathy hesitation, clipped interruption, sudden quiet laugh, or a quiet line becoming more intense. Also include subtle physical expression: blinking, gaze shifts, controlled eye contact, looking down briefly, looking away then back, tiny nod, slight head tilt, chin lift, jaw tension, small mouth movement, brow restraint, shoulder tension, or restrained hand movement. The model decides which tools fit, but the final prompt must clearly include expressive vocal delivery and subtle physical acting. FINAL PROMPT MUST INCLUDE A cinematic acting audition / elevated self-tape, simple setting, medium close-up or locked-off eye-level camera, slight handheld realism or locked camera, shallow depth of field, objective, obstacle, tactic, emotional shift, subtext, reaction beats, silence, chosen dialogue line, short voice recipe, expressive vocal delivery, subtle facial/eye/head/body behavior, unresolved ending, cinematic realism, natural acting, film stock grain, realistic skin detail, soft cinematic lighting. Negative direction: No overacting, melodrama, trailer style, action, montage, plastic skin, smooth faces, pose-based performance, character design changes, exaggerated expressions, unnatural eye movement, or unnecessary worldbuilding spectacle. OUTPUT FORMAT First output: CASTING READ [short analysis] ROLE OPTIONS [3–6 role options] AUDITION LINES Line 1: Line 2: Line 3: VOICE TRIGGERS Voice Trigger A: Voice Trigger B: Voice Trigger C: QUESTION Choose the role type, one line, and one voice trigger. You can also ask to mix voice triggers. After the user chooses, output: FINAL SEEDANCE AUDITION PROMPT [complete prompt under 3500 characters] Do not add extra explanation unless the user asks for it.

After that I revise the prompt and take it to seedance 2.0 and generate! The goal is not just to make a character look consistent. It is to figure out how they move, speak, react, and perform before generating the actual scenes. For AI filmmaking, I think that difference matters a lot.

Here is how you can apply any performance you like to your scenes

I couldn't left this system prompt without a test Akari emotions and expressions so real 😯

Oh wow! Yeah the expressions are really amazing 😍

Great workflow, Oak!

Thanks koda!

The first one is my fav, there's an Emotion, it's way more powerful for connection than pure villain performance

I like the first one as well! I think deciding how the character should act before can save you a lot of time (and credits lol).

When you look at them decreasing with each generation, it's painful to look at😂😂

I feel that hahaha

Im a film editor. This looks promising. It would also be good to have characters interact with each other. The reflective properties of characters are sometimes more effective than delivering. Not sure if you understand me, but... there you go.

Yeah, I get you. Character interactions are a huge part of performance. This is only the tip of the iceberg though, there's a lot more you can explore with this workflow the base of the prompt is foucsed on expressions and delivery, so I think it could handle charchter interaction.

gonna try this thanks

Another banger

Looks interesting. I build also a system into #filmbrain and also a character journey will be possible with consistent key characteristics.

oh that would be great! just followed, excited to try it out!

Nice one So you make a bunch of AI Chars to see how they perform?

Thanks seth. You can say that but i think it is more like you trying to see what is the best performance for a certain character and lock it in.

Really love this. I was also doing something adjacent to find their voice and then utilise to build a voice model. I often prefer what SD generates vs text to voice via ElevenLabs.

Yeah seedance internal voice model is impressive!

These emotions are great

Great tutorial, Oak. The second shot is exactly my taste.

thanks man! yeah that's why I like this workflow, you can find what you like before even start generating🔥

This is neat.

Impressive!

That last take is gold!

This is an awesome idea, thanks for sharing! 😊

@KimAkiyama81 hope it helps!

NO to #1, a Queen would not lean forward like that, looked desperate. Liked #2 best, but it needed a little more confident indignation that was in #3. AMAZING work! Wish I could do that!!

@PanoramaJasmin You’re on a roll with these bro!! 🔥🔥🔥

Appreciate it phum! 🤍

Interesting workflow, thanks for sharing

I like this a lot but I’m wondering if you liked the audit so much that you want to replicate a certain emotion or a voice in the actual film, how do you replicate this exact result in a new Seedance video generation ? Thanks in advance

Gonna post about it today!

🔥🔥🔥

Sopranos in Space

I really love the first one! Outstanding Oak. Thank you for sharing 🤍✨

Thanks gv! 🤍

Good stuff!

thanks man!

Thank you for sharing this!

this is super cool, can you use these reference videos inside of seedance and will it perform better than reference images (any issues with getting flagged for the facial features etc in the ref videos?)

Using the video is good but not reliable and effect the output more, for example it might use the same compstion or camera movement of the ref video, I'll post about how you replicate the acting to different generations today, but Using prompt is a more reliable way of doing it.

okay got it, yeah would be super cool !

Very insightful and practical. Thank you for sharing your valuable experience and tips on AI generation!👍

✨thank you!

This is wonderful 👏🏼

Love the variety! 🔥

This is great! Saw it on Reddit first. Smart workflow.

thanks! I had no idea it was on reddit already. if you have the link, I'd love to take a look 🙌

Saw it here, thought it was you but could be mistaken! Pretty cool either way.

Thats mine! 🫠 Thanks for letting me know

Character auditions are the missing layer for AI video.

The next level of AI storytelling is testing character performance, not just character consistency.

This is a great observation and method, this will be the next thing everyone needs to do after ref sheets storyboard and now performance ref

For sure, no more guess work 👌
