mirror of
https://github.com/mudler/LocalAI.git
synced 2026-09-12 22:33:54 -04:00
Ettore Di Giacinto
21df4a120a
Add a Darwin-only MLX-Video backend for LTX-2 and converted Wan checkpoints, expose it through the existing video API, and wire packaging, discovery, tests, docs, and an example. Assisted-by: Codex:gpt-5 Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
103 lines
3.3 KiB
Python
103 lines
3.3 KiB
Python
# SPDX-License-Identifier: MIT
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import os
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import sys
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def parse_options(options):
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parsed = {}
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for option in options:
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key, separator, value = option.partition(":")
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parsed[key] = value if separator else "true"
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return parsed
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def classify_model(model):
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normalized = model.rstrip("/").lower()
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name = os.path.basename(normalized)
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if "ltx-2" in normalized or "ltx2" in normalized:
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return "ltx2"
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if "wan2" in name or "wan_2" in name:
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return "wan"
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return None
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def _append(command, flag, value):
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if value is not None and value != "":
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command.extend([flag, str(value)])
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def build_generation_command(
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*,
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family,
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model,
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prompt,
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destination,
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negative_prompt="",
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start_image="",
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end_image="",
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audio="",
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width=0,
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height=0,
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num_frames=0,
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fps=0,
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seed=0,
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steps=0,
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cfg_scale=0,
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params=None,
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):
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params = params or {}
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if audio:
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raise ValueError("audio conditioning is not supported by mlx-video")
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if family == "ltx2":
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command = [sys.executable, "-m", "mlx_video.models.ltx_2.generate"]
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_append(command, "--model-repo", model)
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_append(command, "--prompt", prompt)
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_append(command, "--output-path", destination)
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_append(command, "--negative-prompt", negative_prompt)
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_append(command, "--image", start_image)
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_append(command, "--end-image", end_image)
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_append(command, "--width", width or None)
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_append(command, "--height", height or None)
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_append(command, "--num-frames", num_frames or None)
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_append(command, "--fps", fps or None)
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_append(command, "--seed", seed if seed > 0 else None)
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_append(command, "--steps", steps or None)
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_append(command, "--cfg-scale", cfg_scale or None)
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for key, flag in {
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"pipeline": "--pipeline",
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"tiling": "--tiling",
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"image_strength": "--image-strength",
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"end_image_strength": "--end-image-strength",
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"text_encoder_repo": "--text-encoder-repo",
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}.items():
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_append(command, flag, params.get(key))
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return command
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if family == "wan":
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if end_image:
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raise ValueError("Wan models do not support end_image conditioning")
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command = [sys.executable, "-m", "mlx_video.models.wan_2.generate"]
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_append(command, "--model-dir", model)
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_append(command, "--prompt", prompt)
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_append(command, "--output-path", destination)
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_append(command, "--negative-prompt", negative_prompt)
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_append(command, "--image", start_image)
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_append(command, "--width", width or None)
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_append(command, "--height", height or None)
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_append(command, "--num-frames", num_frames or None)
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_append(command, "--seed", seed if seed > 0 else None)
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_append(command, "--steps", steps or None)
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_append(command, "--guide-scale", cfg_scale or None)
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for key, flag in {
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"scheduler": "--scheduler",
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"shift": "--shift",
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"tiling": "--tiling",
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"trim_first_frames": "--trim-first-frames",
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}.items():
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_append(command, flag, params.get(key))
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return command
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raise ValueError(f"unsupported mlx-video model family: {family}")
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