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Protoface H3 Nova API

Protoface H3 Nova generates video from text, images, video and audio.

Try in Studio

Mode

Prompt *

Duration *

Aspect ratio

Audio

Resolution

More options (5)

Reference imagesChoose image
Open Studio to supply your own input

Reference videosChoose video
Open Studio to supply your own input

AudioChoose audio
Open Studio to supply your own input

Enhance prompt

Seed

Generate

Pricing depends on the selected inputs. See the rates below.

Protoface H3 Nova

Protoface H3 Nova Text to Video API example

curl -X POST https://api.protoface.com/v1/run/protoface/h3-nova \
  -H "Authorization: Bearer $PROTOFACE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "operation": "video.general",
  "prompt": "A red fox resting beside a woodland stream, soft morning light.",
  "aspect_ratio": "16:9",
  "duration_seconds": 4,
  "enhance_prompt": false,
  "generate_audio": true,
  "quality": "480p"
}'

Replace example input URLs with your own public URLs or uploaded asset IDs. This request uses the selected mode and settings.

Protoface H3 Nova Reference to Video API example

curl -X POST https://api.protoface.com/v1/run/protoface/h3-nova \
  -H "Authorization: Bearer $PROTOFACE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "operation": "video.general",
  "prompt": "A red fox resting beside a woodland stream, soft morning light.",
  "aspect_ratio": "16:9",
  "duration_seconds": 4,
  "enhance_prompt": false,
  "generate_audio": true,
  "quality": "480p",
  "reference": "https://example.com/your-image.png"
}'

Replace example input URLs with your own public URLs or uploaded asset IDs. This request uses the selected mode and settings.

Protoface H3 Nova Video reference API example

curl -X POST https://api.protoface.com/v1/run/protoface/h3-nova \
  -H "Authorization: Bearer $PROTOFACE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "operation": "video.general",
  "prompt": "A red fox resting beside a woodland stream, soft morning light.",
  "aspect_ratio": "16:9",
  "duration_seconds": 4,
  "enhance_prompt": false,
  "generate_audio": true,
  "quality": "480p",
  "reference_video": "https://example.com/your-video.mp4"
}'

Replace example input URLs with your own public URLs or uploaded asset IDs. This request uses the selected mode and settings.

API documentation: submit a run and retrieve its output →

Supported modes

Text to Video

Text to Video uses prompt and duration. Adjust the model options to prepare a request for this mode.

video.general

Reference to Video

Reference to Video uses prompt and reference images and duration. Adjust the model options to prepare a request for this mode.

video.general

Video reference

Video reference uses prompt and reference videos and duration. Adjust the model options to prepare a request for this mode.

video.general

Pricing

Price per output second. Round the total charge up to the next $0.01.

Offering	Price (USD)
480p	$0.01
768p	$0.036
Reference image (each) · 480p	$0.03
Reference image (first 5 free, then each) · 768p	$0.07
Reference audio (each) · 480p	$0.03
Reference audio · 768p	Free
Reference video (per input second) · 480p	$0.07
Reference video (per input second) · 768p	$0.13

480p: minimum billed duration 4s.
768p: minimum billed duration 4s.

Text to Video options

Option	Details	Default
Prompt * `prompt`	Text input.	`—`
Reference images `reference`	Media input: public URL or uploaded asset ID.	`—`
Reference videos `reference_video`	Media input: public URL or uploaded asset ID.	`—`
Audio `audio`	Media input: public URL or uploaded asset ID.	`—`
Aspect ratio `aspect_ratio`	Options: 16:9, 9:16.	`"16:9"`
Duration * `duration_seconds`	Minimum: 4. Maximum: 15.	`—`
Enhance prompt `enhance_prompt`	Enable or disable this option.	`false`
Audio `generate_audio`	Enable or disable this option.	`true`
Resolution `quality`	Options: 480p, 768p.	`"480p"`
Seed `seed`	Minimum: 0. Maximum: 4294967295.	`—`

Reference to Video options

Option	Details	Default
Prompt * `prompt`	Text input.	`—`
Reference images * `reference`	Media input: public URL or uploaded asset ID.	`—`
Reference videos `reference_video`	Media input: public URL or uploaded asset ID.	`—`
Audio `audio`	Media input: public URL or uploaded asset ID.	`—`
Aspect ratio `aspect_ratio`	Options: 16:9, 9:16.	`"16:9"`
Duration * `duration_seconds`	Minimum: 4. Maximum: 15.	`—`
Enhance prompt `enhance_prompt`	Enable or disable this option.	`false`
Audio `generate_audio`	Enable or disable this option.	`true`
Resolution `quality`	Options: 480p, 768p.	`"480p"`
Seed `seed`	Minimum: 0. Maximum: 4294967295.	`—`

Video reference options

Option	Details	Default
Prompt * `prompt`	Text input.	`—`
Reference images `reference`	Media input: public URL or uploaded asset ID.	`—`
Reference videos * `reference_video`	Media input: public URL or uploaded asset ID.	`—`
Audio `audio`	Media input: public URL or uploaded asset ID.	`—`
Aspect ratio `aspect_ratio`	Options: 16:9, 9:16.	`"16:9"`
Duration * `duration_seconds`	Minimum: 4. Maximum: 15.	`—`
Enhance prompt `enhance_prompt`	Enable or disable this option.	`false`
Audio `generate_audio`	Enable or disable this option.	`true`
Resolution `quality`	Options: 480p, 768p.	`"480p"`
Seed `seed`	Minimum: 0. Maximum: 4294967295.	`—`

Protoface H3 Nova

Protoface H3 Nova creates video from text descriptions and visual references. A prompt describes the scene, subjects and motion. Reference images provide visual context. A video reference provides a moving source. Audio can be supplied with a visual reference.

What it's good for

Use Protoface H3 Nova to explore a shot before a production starts. Describe a setting and action to create a scene concept. Supply visual references to develop a related video idea. Use the same creation flow for text and reference requests, then review the result for the intended story and presentation.

Run Protoface H3 Nova on Protoface

Use Protoface H3 Nova in Protoface Studio without writing code. Choose your inputs and generation settings, then generate with affordable, usage-based pricing. For your own AI app or workflow, use the Protoface API to submit generations and retrieve their outputs.

Create in Studio →Integrate the API →Protoface pricing →

Model publisher

About Protoface

Protoface is a managed generative-media platform with Studio and API workflows for video creation and realtime avatars. Its inference infrastructure serves third-party model families such as MiniMax, LTX and Kling alongside Protoface-branded avatar tools, helping creators explore models visually and developers incorporate media generation into applications.