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video_processor.py

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+# Copyright 2023-2024 SGLang Team
+# Licensed under the Apache License, Version 2.0 (the "License");
+"""
+MiniMax VL family HuggingFace-compatible VideoProcessor.
+"""
+
+import math
+from typing import List, Optional, Tuple, Union
+
+import torch
+import torchvision
+from torchvision.transforms import InterpolationMode
+from transformers import BatchFeature
+from transformers.image_utils import PILImageResampling, SizeDict
+from transformers.processing_utils import (
+    Unpack,
+    VideosKwargs,
+)
+from transformers.utils import TensorType
+from transformers.video_processing_utils import BaseVideoProcessor
+from transformers.video_utils import group_videos_by_shape, reorder_videos
+
+MAX_RATIO = 200
+
+
+def round_by_factor(number: int, factor: int) -> int:
+    return round(number / factor) * factor
+
+
+def ceil_by_factor(number: int, factor: int) -> int:
+    return math.ceil(number / factor) * factor
+
+
+def floor_by_factor(number: int, factor: int) -> int:
+    return math.floor(number / factor) * factor
+
+
+def smart_resize(
+    height: int,
+    width: int,
+    factor: int = 28,
+    min_pixels: int = 4 * 28 * 28,
+    max_pixels: int = 451584,
+) -> tuple[int, int]:
+    if max(height, width) / min(height, width) > MAX_RATIO:
+        raise ValueError(
+            f"absolute aspect ratio must be smaller than {MAX_RATIO}, "
+            f"got {max(height, width) / min(height, width)}"
+        )
+    h_bar = max(factor, round_by_factor(height, factor))
+    w_bar = max(factor, round_by_factor(width, factor))
+    if h_bar * w_bar > max_pixels:
+        beta = math.sqrt((height * width) / max_pixels)
+        h_bar = floor_by_factor(height / beta, factor)
+        w_bar = floor_by_factor(width / beta, factor)
+    elif h_bar * w_bar < min_pixels:
+        beta = math.sqrt(min_pixels / (height * width))
+        h_bar = ceil_by_factor(height * beta, factor)
+        w_bar = ceil_by_factor(width * beta, factor)
+    return h_bar, w_bar
+
+
+class MiniMaxM3VLVideoProcessorKwargs(VideosKwargs, total=False):
+    patch_size: int
+    temporal_patch_size: int
+    merge_size: int
+    min_pixels: int
+    max_pixels: int
+    total_pixels: int
+    min_frames: int
+    max_frames: int
+    fps: float | int
+
+
+class MiniMaxM3VLVideoProcessor(BaseVideoProcessor):
+    do_resize = True
+    resample = PILImageResampling.BICUBIC
+    size = {"height": 672, "width": 672}
+    default_to_square = False
+    do_rescale = True
+    rescale_factor = 1 / 255
+    do_normalize = True
+    image_mean = [0.48145466, 0.4578275, 0.40821073]
+    image_std = [0.26862954, 0.26130258, 0.27577711]
+    do_convert_rgb = True
+    do_sample_frames = False
+    patch_size = 14
+    temporal_patch_size = 2
+    merge_size = 2
+    min_pixels = 4 * 28 * 28
+    max_pixels = 768 * 28 * 28                  # 602,112
+    total_pixels = int(64000 * 28 * 28 * 0.9)   # ~45M, ~64k tokens budget
+    fps = 1.0
+    min_frames = 4
+    max_frames = 768
+    valid_kwargs = MiniMaxM3VLVideoProcessorKwargs
+    model_input_names = ["pixel_values_videos", "video_grid_thw"]
+
+    def __init__(self, **kwargs: Unpack[MiniMaxM3VLVideoProcessorKwargs]):
+        super().__init__(**kwargs)
+
+    def _preprocess(
+        self,
+        videos: List[torch.Tensor],
+        do_convert_rgb: bool,
+        do_resize: bool,
+        size: SizeDict,
+        resample: PILImageResampling | InterpolationMode | int | None,
+        do_rescale: bool,
+        rescale_factor: float,
+        do_normalize: bool,
+        image_mean: float | List[float] | None,
+        image_std: float | List[float] | None,
+        patch_size: int,
+        temporal_patch_size: int,
+        merge_size: int,
+        min_pixels: int,
+        max_pixels: int,
+        return_tensors: str | TensorType | None = None,
+        **kwargs,
+    ) -> BatchFeature:
+        grouped_videos, grouped_videos_index = group_videos_by_shape(videos)
+        resized_videos_grouped = {}
+        factor = patch_size * merge_size
+        for shape, stacked_videos in grouped_videos.items():
+            batch_size, num_frames, channels, height, width = stacked_videos.shape
+            resized_height, resized_width = height, width
+            if do_resize:
+                resized_height, resized_width = smart_resize(
+                    height, width, factor=factor,
+                    min_pixels=min_pixels, max_pixels=max_pixels,
+                )
+                stacked_videos = stacked_videos.view(
+                    batch_size * num_frames, channels, height, width
+                )
+                stacked_videos = self.resize(
+                    stacked_videos,
+                    size=SizeDict(height=resized_height, width=resized_width),
+                    resample=resample,
+                )
+                stacked_videos = stacked_videos.view(
+                    batch_size,
+                    num_frames,
+                    channels,
+                    resized_height,
+                    resized_width,
+                )
+            resized_videos_grouped[shape] = stacked_videos
+        resized_videos = reorder_videos(resized_videos_grouped, grouped_videos_index)
+
+        grouped_videos, grouped_videos_index = group_videos_by_shape(resized_videos)
+        processed_videos_grouped = {}
+        processed_grids = {}
+        for shape, stacked_videos in grouped_videos.items():
+            resized_height, resized_width = stacked_videos.shape[-2:]
+            patches = self.rescale_and_normalize(
+                stacked_videos,
+                do_rescale,
+                rescale_factor,
+                do_normalize,
+                image_mean,
+                image_std,
+            )
+
+            if pad := -patches.shape[1] % temporal_patch_size:
+                repeats = patches[:, -1:].expand(-1, pad, -1, -1, -1)
+                patches = torch.cat([patches, repeats], dim=1)
+
+            batch_size, grid_t, channels = patches.shape[:3]
+            grid_t = grid_t // temporal_patch_size
+            grid_h, grid_w = resized_height // patch_size, resized_width // patch_size
+
+            patches = patches.view(
+                batch_size,
+                grid_t,
+                temporal_patch_size,
+                channels,
+                grid_h // merge_size,
+                merge_size,
+                patch_size,
+                grid_w // merge_size,
+                merge_size,
+                patch_size,
+            )
+            patches = patches.permute(0, 1, 4, 7, 5, 8, 3, 2, 6, 9)
+            flatten_patches = patches.reshape(
+                batch_size,
+                grid_t * grid_h * grid_w,
+                channels * temporal_patch_size * patch_size * patch_size,
+            )
+
+            processed_videos_grouped[shape] = flatten_patches
+            processed_grids[shape] = [[grid_t, grid_h, grid_w]] * batch_size
+
+        processed_videos = reorder_videos(
+            processed_videos_grouped, grouped_videos_index
+        )
+        processed_grids = reorder_videos(processed_grids, grouped_videos_index)
+        pixel_values_videos = torch.cat(processed_videos, dim=0)
+        video_grid_thw = torch.tensor(processed_grids, dtype=torch.long)
+
+        return BatchFeature(
+            data={
+                "pixel_values_videos": pixel_values_videos,
+                "video_grid_thw": video_grid_thw,
+            },
+            tensor_type=return_tensors,
+        )