Matan Cohen Grumi builds a film with Fable 5.2 and the Pika API

• Matan Cohen Grumi made a short film through one conversation with Fable 5.2 connected to the Pika API, according to his breakdown.
• Recurring visual references came from character sheets and location plates established before video generation.
• Shots started as 480p drafts; approved drafts became native 4K shots, with Fable also handling the edit.

Grumi's smartest production choice was directing the performances in audio before generating video. A creature even got a performance note inside an existing clip.

The story starts on the third night of a small-town blackout, when a girl finds something in a garage that can turn the lights back on. Fable helped Grumi develop the script and shot list, he explained in his thread.

Grumi connected Fable to three generation models through Pika:

• Seedream 5.5: images.
• Seed Audio: voices.
• Seedance 2.5: video.

His account includes human approvals and specific revisions throughout the production, all within that conversation.

Before generating footage, Grumi established two sets of visual references:

• Character sheets: generated with Seedream 5.5 and supplied to every video generation.
• Location plates: still images establishing each setting before video generation, intended to keep it consistent across the scene.

Grumi refined each scene's pacing and emotional delivery in Seed Audio before generating a single video clip. Every audio generation received:

• The same short voice-reference clip for each character.
• The same written description of that character's voice, placed at the top of the prompt.

Seedance 2.5 then received the scene's audio as a reference for its timing and delivery.

Each Seedance 2.5 reference-to-video request combined four inputs:

1. Character sheets.
2. A location still.
3. The scene's audio.
4. A detailed shot description.

Everything was drafted at 480p first. Grumi described those drafts as fast and cheap enough to retry an angle until the acting and camera felt right.

Grumi kept a nearly finished clip and asked Seedance 2.5 to change the creature's reaction to her line, making it more excited. That revision used the existing footage as the starting point.

For the light blooming in the girl's hand, Grumi generated and layered three dedicated effects:

• A spark at the moment of touch.
• A low bloom.
• A hum following the glow.

Grumi says Fable turned the approved drafts into native 4K using Seedance 2.5 only after the draft cut worked. He also credits Fable with:

• The cut.
• Sound mixing.
• Music.
• Titles.
• Subtitles.

Seedance 2.5 4K is live on Pika, and Grumi links to the API for this production workflow.

Access is self-serve with no waitlist, according to Pika's API documentation. One key provides access to models across providers; media jobs run asynchronously, with processing measured in seconds to minutes.

Generation requires an API key and a prepaid balance, with no free generation tier. The pricing documentation describes per-operation quotes, which are free to request before a paid generation.

Grumi's thread does not give a total production budget or generation-attempt count.