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LTX-2 19B Text-to-Video LoRA: Geração realista de texto para vídeo com áudio sincronizado | RunComfy

ltx/ltx-2-19b/text-to-video/lora

Transforme prompts de texto em vídeos com áudio sincronizado, controle de estilo por LoRA, nitidez 4K e movimento fluido para anúncios cinematográficos, narrativas e conteúdo de marca.

Índice

1. Introdução2. Autenticação3. Referência da APIEnviar uma solicitaçãoStatus da solicitaçãoObter resultadosCancelar solicitação4. Arquivos de entradaArquivo hospedado (URL)5. EsquemaEsquema de entradaEsquema de saída

1. Introdução

Use a API RunComfy para executar ltx/ltx-2-19b/text-to-video/lora. Para entradas e saídas aceitas, consulte o esquema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/ltx/ltx-2-19b/text-to-video/lora \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "An astronaut hatches from a fragile egg on the surface of the Moon, the shell cracking and peeling apart in gentle low-gravity motion. Fine lunar dust lifts and drifts outward with each movement, floating in slow arcs before settling back onto the ground. The astronaut pushes free in a deliberate, weightless motion, small fragments of the egg tumbling and spinning through the air. In the background, the deep darkness of space subtly shifts as stars glide with the camera's movement, emphasizing vast depth and scale. The camera performs a smooth, cinematic slow push-in, with natural parallax between the foreground dust, the astronaut, and the distant starfield. Ultra-realistic detail, physically accurate low-gravity motion, cinematic lighting, and a breath-taking, movie-like shot.An astronaut hatches from a fragile egg on the surface of the Moon, the shell cracking and peeling apart in gentle low-gravity motion. Fine lunar dust lifts and drifts outward with each movement, floating in slow arcs before settling back onto the ground. The astronaut pushes free in a deliberate, weightless motion, small fragments of the egg tumbling and spinning through the air. In the background, the deep darkness of space subtly shifts as stars glide with the camera's movement, emphasizing vast depth and scale. The camera performs a smooth, cinematic slow push-in, with natural parallax between the foreground dust, the astronaut, and the distant starfield. Ultra-realistic detail, physically accurate low-gravity motion, cinematic lighting, and a breath-taking, movie-like shot."
  }'

2. Autenticação

Defina a variável de ambiente YOUR_API_TOKEN com sua chave de API (gerenciamento no Perfil) e inclua em cada solicitação um token Bearer no cabeçalho Authorization : Authorization: Bearer $YOUR_API_TOKEN.

3. Referência da API

Enviar uma solicitação

Envie um trabalho de geração assíncrono e receba imediatamente um request_id e URLs para status, resultados e cancelamento.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/ltx/ltx-2-19b/text-to-video/lora \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "An astronaut hatches from a fragile egg on the surface of the Moon, the shell cracking and peeling apart in gentle low-gravity motion. Fine lunar dust lifts and drifts outward with each movement, floating in slow arcs before settling back onto the ground. The astronaut pushes free in a deliberate, weightless motion, small fragments of the egg tumbling and spinning through the air. In the background, the deep darkness of space subtly shifts as stars glide with the camera's movement, emphasizing vast depth and scale. The camera performs a smooth, cinematic slow push-in, with natural parallax between the foreground dust, the astronaut, and the distant starfield. Ultra-realistic detail, physically accurate low-gravity motion, cinematic lighting, and a breath-taking, movie-like shot.An astronaut hatches from a fragile egg on the surface of the Moon, the shell cracking and peeling apart in gentle low-gravity motion. Fine lunar dust lifts and drifts outward with each movement, floating in slow arcs before settling back onto the ground. The astronaut pushes free in a deliberate, weightless motion, small fragments of the egg tumbling and spinning through the air. In the background, the deep darkness of space subtly shifts as stars glide with the camera's movement, emphasizing vast depth and scale. The camera performs a smooth, cinematic slow push-in, with natural parallax between the foreground dust, the astronaut, and the distant starfield. Ultra-realistic detail, physically accurate low-gravity motion, cinematic lighting, and a breath-taking, movie-like shot."
  }'

Status da solicitação

Obtém o estado atual de um request_id ("in_queue", "in_progress", "completed" ou "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Obter resultados

Obtém as saídas finais e metadados do request_id; se o trabalho não estiver concluído, a resposta retorna o estado atual para continuar o polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancelar solicitação

Cancela um trabalho na fila por request_id; trabalhos em andamento não podem ser cancelados.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. Arquivos de entrada

Arquivo hospedado (URL)

Forneça uma URL HTTPS publicamente acessível. O host deve permitir buscas no servidor (sem login/cookies), sem limite de taxa agressivo ou bloqueio de bots. Recomendado: imagens ≤ 50 MB (~4K), vídeos ≤ 100 MB (~2–5 min em 720p). Para ativos privados, URLs estáveis ou pré-assinadas.

5. Esquema

Esquema de entrada

{
  "type": "object",
  "title": "Esquema de entrada",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "",
      "type": "string",
      "default": "An astronaut hatches from a fragile egg on the surface of the Moon, the shell cracking and peeling apart in gentle low-gravity motion. Fine lunar dust lifts and drifts outward with each movement, floating in slow arcs before settling back onto the ground. The astronaut pushes free in a deliberate, weightless motion, small fragments of the egg tumbling and spinning through the air. In the background, the deep darkness of space subtly shifts as stars glide with the camera's movement, emphasizing vast depth and scale. The camera performs a smooth, cinematic slow push-in, with natural parallax between the foreground dust, the astronaut, and the distant starfield. Ultra-realistic detail, physically accurate low-gravity motion, cinematic lighting, and a breath-taking, movie-like shot.An astronaut hatches from a fragile egg on the surface of the Moon, the shell cracking and peeling apart in gentle low-gravity motion. Fine lunar dust lifts and drifts outward with each movement, floating in slow arcs before settling back onto the ground. The astronaut pushes free in a deliberate, weightless motion, small fragments of the egg tumbling and spinning through the air. In the background, the deep darkness of space subtly shifts as stars glide with the camera's movement, emphasizing vast depth and scale. The camera performs a smooth, cinematic slow push-in, with natural parallax between the foreground dust, the astronaut, and the distant starfield. Ultra-realistic detail, physically accurate low-gravity motion, cinematic lighting, and a breath-taking, movie-like shot."
    },
    "resolution": {
      "title": "Resolução",
      "description": "Resolução de saída.",
      "type": "string",
      "enum": [
        "480p",
        "720p",
        "1080p"
      ],
      "default": "720p"
    },
    "aspect_ratio": {
      "title": "Proporção (L:A)",
      "description": "Formato de saída.",
      "type": "string",
      "enum": [
        "16:9",
        "9:16"
      ],
      "default": "16:9"
    },
    "duration": {
      "title": "Duração",
      "description": "Duração do vídeo em segundos (5–20; padrão: 5).",
      "type": "integer",
      "minimum": 5,
      "maximum": 20,
      "default": 5
    },
    "loras": {
      "title": "Configuração de LoRA",
      "description": "Lista de LoRAs a aplicar (máximo de 3).",
      "type": "array",
      "items": {
        "path": {
          "title": "Caminho LoRA",
          "description": "URL ou ID do repositório HuggingFace (proprietário/repo) dos pesos LoRA.",
          "type": "string",
          "format": "str",
          "default": ""
        },
        "scale": {
          "title": "Escala LoRA",
          "description": "Escala do modelo LoRA.",
          "type": "float",
          "format": "float_slider_with_range",
          "minimum": 0,
          "maximum": 4,
          "default": 1
        }
      },
      "maxItems": 3,
      "minItems": 0
    },
    "seed": {
      "title": "Semente",
      "description": "Semente para resultados reproduzíveis (-1 para valor aleatório).",
      "type": "integer",
      "minimum": -1,
      "default": -1
    }
  }
}

Esquema de saída

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "URL de imagem única"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "URL de vídeo único"
      },
      "images": {
        "type": "array",
        "description": "várias URLs de imagem",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "várias URLs de vídeo",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}
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