init

README.md

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+---
+datasets:
+- OpenGVLab/InternVid
+base_model:
+- openai/clip-vit-large-patch14
+tags:
+- ViCLIP
+---
+
+huggingface weight of ViCLIP
+
+remember to set your `tokenizer_path` in config.json
+
+usage is in demo.ipynb

bpe_simple_vocab_16e6.txt.gz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:924691ac288e54409236115652ad4aa250f48203de50a9e4722a6ecd48d6804a
+size 1356917

config.json

@@ -0,0 +1,12 @@
+{
+  "architectures": [
+    "ViCLIP"
+  ],
+  "auto_map": {
+    "AutoConfig": "configuration_viclip.Config",
+    "AutoModel": "viclip.ViCLIP"
+  },
+  "torch_dtype": "float32",
+  "size":"l",
+  "tokenizer_path":"./bpe_simple_vocab_16e6.txt.gz"
+}

configuration_viclip.py

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+from transformers import PretrainedConfig
+
+class Config(PretrainedConfig):
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)

demo.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "a436c0a1-3410-4a7f-a186-9246075ac815",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from transformers import AutoModel\n",
+    "model=AutoModel.from_pretrained(\"OpenGVLab/ViCLIP-L-14-hf\",trust_remote_code=True)\n",
+    "tokenizer = model.tokenizer\n",
+    "model_tokenizer={\"viclip\":model,\"tokenizer\":tokenizer}\n",
+    "print(\"done\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "id": "a425a5da-ceaf-4b89-9845-c8ba576902d8",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# video data\n",
+    "import numpy as np\n",
+    "import os\n",
+    "import cv2\n",
+    "import torch\n",
+    "def _frame_from_video(video):\n",
+    "    while video.isOpened():\n",
+    "        success, frame = video.read()\n",
+    "        if success:\n",
+    "            yield frame\n",
+    "        else:\n",
+    "            break\n",
+    "video = cv2.VideoCapture('example1.mp4')\n",
+    "frames = [x for x in _frame_from_video(video)]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "aac775ce",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# function\n",
+    "\n",
+    "def get_text_feat_dict(texts, clip, tokenizer, text_feat_d={}):\n",
+    "    for t in texts:\n",
+    "        feat = clip.get_text_features(t, tokenizer, text_feat_d)\n",
+    "        text_feat_d[t] = feat\n",
+    "    return text_feat_d\n",
+    "\n",
+    "def get_vid_feat(frames, clip):\n",
+    "    return clip.get_vid_features(frames)\n",
+    "\n",
+    "v_mean = np.array([0.485, 0.456, 0.406]).reshape(1,1,3)\n",
+    "v_std = np.array([0.229, 0.224, 0.225]).reshape(1,1,3)\n",
+    "def normalize(data):\n",
+    "    return (data/255.0-v_mean)/v_std\n",
+    "\n",
+    "def frames2tensor(vid_list, fnum=8, target_size=(224, 224), device=torch.device('cuda')):\n",
+    "    assert(len(vid_list) >= fnum)\n",
+    "    step = len(vid_list) // fnum\n",
+    "    vid_list = vid_list[::step][:fnum]\n",
+    "    vid_list = [cv2.resize(x[:,:,::-1], target_size) for x in vid_list]\n",
+    "    vid_tube = [np.expand_dims(normalize(x), axis=(0, 1)) for x in vid_list]\n",
+    "    vid_tube = np.concatenate(vid_tube, axis=1)\n",
+    "    vid_tube = np.transpose(vid_tube, (0, 1, 4, 2, 3))\n",
+    "    vid_tube = torch.from_numpy(vid_tube).to(device, non_blocking=True).float()\n",
+    "    return vid_tube\n",
+    "def retrieve_text(frames, \n",
+    "                  texts, \n",
+    "                  models={'viclip':None, \n",
+    "                          'tokenizer':None},\n",
+    "                  topk=5, \n",
+    "                  device=torch.device('cuda')):\n",
+    "    # clip, tokenizer = get_clip(name, model_cfg['size'], model_cfg['pretrained'], model_cfg['reload'])\n",
+    "    assert(type(models)==dict and models['viclip'] is not None and models['tokenizer'] is not None)\n",
+    "    clip, tokenizer = models['viclip'], models['tokenizer']\n",
+    "    clip = clip.to(device)\n",
+    "    frames_tensor = frames2tensor(frames, device=device)\n",
+    "    vid_feat = get_vid_feat(frames_tensor, clip)\n",
+    "\n",
+    "    text_feat_d = {}\n",
+    "    text_feat_d = get_text_feat_dict(texts, clip, tokenizer, text_feat_d)\n",
+    "    text_feats = [text_feat_d[t] for t in texts]\n",
+    "    text_feats_tensor = torch.cat(text_feats, 0)\n",
+    "    \n",
+    "    probs, idxs = clip.get_predict_label(vid_feat, text_feats_tensor, top=topk)\n",
+    "\n",
+    "    ret_texts = [texts[i] for i in idxs.numpy()[0].tolist()]\n",
+    "    return ret_texts, probs.numpy()[0]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "a2969ba6-19d0-4893-b071-b82fa046c312",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# retrieval\n",
+    "text_candidates = [\"A playful dog and its owner wrestle in the snowy yard, chasing each other with joyous abandon.\",\n",
+    "                   \"A man in a gray coat walks through the snowy landscape, pulling a sleigh loaded with toys.\",\n",
+    "                   \"A person dressed in a blue jacket shovels the snow-covered pavement outside their house.\",\n",
+    "                   \"A pet dog excitedly runs through the snowy yard, chasing a toy thrown by its owner.\",\n",
+    "                   \"A person stands on the snowy floor, pushing a sled loaded with blankets, preparing for a fun-filled ride.\",\n",
+    "                   \"A man in a gray hat and coat walks through the snowy yard, carefully navigating around the trees.\",\n",
+    "                   \"A playful dog slides down a snowy hill, wagging its tail with delight.\",\n",
+    "                   \"A person in a blue jacket walks their pet on a leash, enjoying a peaceful winter walk among the trees.\",\n",
+    "                   \"A man in a gray sweater plays fetch with his dog in the snowy yard, throwing a toy and watching it run.\",\n",
+    "                   \"A person bundled up in a blanket walks through the snowy landscape, enjoying the serene winter scenery.\"]\n",
+    "texts, probs = retrieve_text(frames, text_candidates, models=model_tokenizer, topk=5)\n",
+    "\n",
+    "for t, p in zip(texts, probs):\n",
+    "    print(f'text: {t} ~ prob: {p:.4f}')\n",
+    "    \n",
+    "# text: A man in a gray sweater plays fetch with his dog in the snowy yard, throwing a toy and watching it run. ~ prob: 0.8333\n",
+    "# text: A playful dog and its owner wrestle in the snowy yard, chasing each other with joyous abandon. ~ prob: 0.1266\n",
+    "# text: A pet dog excitedly runs through the snowy yard, chasing a toy thrown by its owner. ~ prob: 0.0368\n",
+    "# text: A person dressed in a blue jacket shovels the snow-covered pavement outside their house. ~ prob: 0.0030\n",
+    "# text: A playful dog slides down a snowy hill, wagging its tail with delight. ~ prob: 0.0003"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "84922de7-b41c-41c1-87a0-b28e52da9b5d",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.10.4"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

model.safetensors

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:07d32e92a78d3e155915ffb87ad6e967a279cd1b06bfb6433dac800247a0ee8f
+size 1710416692

simple_tokenizer.py

@@ -0,0 +1,135 @@
+import gzip
+import html
+import os
+from functools import lru_cache
+
+import ftfy
+import regex as re
+
+
+@lru_cache()
+def default_bpe():
+    return os.path.join(os.path.dirname(os.path.abspath(__file__)), "bpe_simple_vocab_16e6.txt.gz")
+# @lru_cache()
+# def default_bpe():
+#     return "bpe_simple_vocab_16e6.txt.gz"
+
+
+@lru_cache()
+def bytes_to_unicode():
+    """
+    Returns list of utf-8 byte and a corresponding list of unicode strings.
+    The reversible bpe codes work on unicode strings.
+    This means you need a large # of unicode characters in your vocab if you want to avoid UNKs.
+    When you're at something like a 10B token dataset you end up needing around 5K for decent coverage.
+    This is a signficant percentage of your normal, say, 32K bpe vocab.
+    To avoid that, we want lookup tables between utf-8 bytes and unicode strings.
+    And avoids mapping to whitespace/control characters the bpe code barfs on.
+    """
+    bs = list(range(ord("!"), ord("~")+1))+list(range(ord("¡"), ord("¬")+1))+list(range(ord("®"), ord("ÿ")+1))
+    cs = bs[:]
+    n = 0
+    for b in range(2**8):
+        if b not in bs:
+            bs.append(b)
+            cs.append(2**8+n)
+            n += 1
+    cs = [chr(n) for n in cs]
+    return dict(zip(bs, cs))
+
+
+def get_pairs(word):
+    """Return set of symbol pairs in a word.
+    Word is represented as tuple of symbols (symbols being variable-length strings).
+    """
+    pairs = set()
+    prev_char = word[0]
+    for char in word[1:]:
+        pairs.add((prev_char, char))
+        prev_char = char
+    return pairs
+
+
+def basic_clean(text):
+    text = ftfy.fix_text(text)
+    text = html.unescape(html.unescape(text))
+    return text.strip()
+
+
+def whitespace_clean(text):
+    text = re.sub(r'\s+', ' ', text)
+    text = text.strip()
+    return text
+
+
+class SimpleTokenizer(object):
+    def __init__(self, bpe_path: str = default_bpe()):
+        self.byte_encoder = bytes_to_unicode()
+        self.byte_decoder = {v: k for k, v in self.byte_encoder.items()}
+        merges = gzip.open(bpe_path).read().decode("utf-8").split('\n')
+        merges = merges[1:49152-256-2+1]
+        merges = [tuple(merge.split()) for merge in merges]
+        vocab = list(bytes_to_unicode().values())
+        vocab = vocab + [v+'</w>' for v in vocab]
+        for merge in merges:
+            vocab.append(''.join(merge))
+        vocab.extend(['<|startoftext|>', '<|endoftext|>'])
+        self.encoder = dict(zip(vocab, range(len(vocab))))
+        self.decoder = {v: k for k, v in self.encoder.items()}
+        self.bpe_ranks = dict(zip(merges, range(len(merges))))
+        self.cache = {'<|startoftext|>': '<|startoftext|>', '<|endoftext|>': '<|endoftext|>'}
+        self.pat = re.compile(r"""<\|startoftext\|>|<\|endoftext\|>|'s|'t|'re|'ve|'m|'ll|'d|[\p{L}]+|[\p{N}]|[^\s\p{L}\p{N}]+""", re.IGNORECASE)
+
+    def bpe(self, token):
+        if token in self.cache:
+            return self.cache[token]
+        word = tuple(token[:-1]) + ( token[-1] + '</w>',)
+        pairs = get_pairs(word)
+
+        if not pairs:
+            return token+'</w>'
+
+        while True:
+            bigram = min(pairs, key = lambda pair: self.bpe_ranks.get(pair, float('inf')))
+            if bigram not in self.bpe_ranks:
+                break
+            first, second = bigram
+            new_word = []
+            i = 0
+            while i < len(word):
+                try:
+                    j = word.index(first, i)
+                    new_word.extend(word[i:j])
+                    i = j
+                except:
+                    new_word.extend(word[i:])
+                    break
+
+                if word[i] == first and i < len(word)-1 and word[i+1] == second:
+                    new_word.append(first+second)
+                    i += 2
+                else:
+                    new_word.append(word[i])
+                    i += 1
+            new_word = tuple(new_word)
+            word = new_word
+            if len(word) == 1:
+                break
+            else:
+                pairs = get_pairs(word)
+        word = ' '.join(word)
+        self.cache[token] = word
+        return word
+
+    def encode(self, text):
+        bpe_tokens = []
+        text = whitespace_clean(basic_clean(text)).lower()
+        for token in re.findall(self.pat, text):
+            token = ''.join(self.byte_encoder[b] for b in token.encode('utf-8'))
+            bpe_tokens.extend(self.encoder[bpe_token] for bpe_token in self.bpe(token).split(' '))
+        return bpe_tokens
+
+    def decode(self, tokens):
+        text = ''.join([self.decoder[token] for token in tokens])
+        text = bytearray([self.byte_decoder[c] for c in text]).decode('utf-8', errors="replace").replace('</w>', ' ')
+        return text

viclip.py

@@ -0,0 +1,281 @@
+import os
+import logging
+
+import torch
+from einops import rearrange
+from torch import nn
+import math
+
+# from .criterions import VTC_VTM_Loss
+from .simple_tokenizer import SimpleTokenizer as _Tokenizer
+from .viclip_vision import clip_joint_l14, clip_joint_b16
+from .viclip_text import clip_text_l14, clip_text_b16
+
+# from transformers import AutoModel
+from transformers import PreTrainedModel #new
+from transformers import PretrainedConfig
+
+logger = logging.getLogger(__name__)
+
+from .configuration_viclip import Config
+# class ViCLIP(nn.Module):
+class ViCLIP(PreTrainedModel):
+    _auto_class="AutoModel"
+    config_class=Config
+
+    def __init__(self,
+                #  tokenizer=None,  # config:PretrainedConfig is the only parameter
+                #  size='l',
+                #  pretrain=None,
+                #  freeze_text=True,
+                 config=PretrainedConfig()):
+        super(ViCLIP, self).__init__(config)
+        self.config=config
+        if 'size' in config.to_dict(): ###########
+            size=config.size
+            pretrain=None
+            tokenizer_path=config.tokenizer_path
+            tokenizer=None
+            freeze_text=True
+
+        if tokenizer:
+            self.tokenizer = tokenizer
+        elif tokenizer_path:
+            self.tokenizer = _Tokenizer(tokenizer_path)
+        else:
+            self.tokenizer = _Tokenizer()
+        self.max_txt_l = 32
+
+        if size.lower() == 'l':
+            self.vision_encoder_name = 'vit_l14'
+        elif size.lower() == 'b':
+            self.vision_encoder_name = 'vit_b16'
+        else:
+            raise NotImplementedError(f"Size {size} not implemented")
+    
+        self.vision_encoder_pretrained = False
+        self.inputs_image_res = 224
+        self.vision_encoder_kernel_size = 1
+        self.vision_encoder_center = True
+        self.video_input_num_frames = 8
+        self.vision_encoder_drop_path_rate = 0.1
+        self.vision_encoder_checkpoint_num = 24
+        self.is_pretrain = pretrain
+        self.vision_width = 1024
+        self.text_width = 768 
+        self.embed_dim = 768 
+        self.masking_prob = 0.9
+        
+        if size.lower() == 'l':
+            self.text_encoder_name = 'vit_l14'
+        elif size.lower() == 'b':
+            self.text_encoder_name = 'vit_b16'
+        else:
+            raise NotImplementedError(f"Size {size} not implemented")
+        
+        self.text_encoder_pretrained = False#'bert-base-uncased'
+        self.text_encoder_d_model = 768
+
+        self.text_encoder_vocab_size = 49408
+        
+        # create modules.
+        self.vision_encoder = self.build_vision_encoder()
+        self.text_encoder = self.build_text_encoder()
+
+        self.temp = nn.parameter.Parameter(torch.ones([]) * 1 / 100.0)
+        self.temp_min = 1 / 100.0
+
+        if pretrain:
+            logger.info(f"Load pretrained weights from {pretrain}")
+            state_dict = torch.load(pretrain, map_location='cpu')['model']
+            self.load_state_dict(state_dict)
+        
+        # Freeze weights
+        if freeze_text:
+            self.freeze_text()
+
+
+    def freeze_text(self):
+        """freeze text encoder"""
+        for p in self.text_encoder.parameters():
+            p.requires_grad = False
+
+    def no_weight_decay(self):
+        ret = {"temp"}
+        ret.update(
+            {"vision_encoder." + k for k in self.vision_encoder.no_weight_decay()}
+        )
+        ret.update(
+            {"text_encoder." + k for k in self.text_encoder.no_weight_decay()}
+        )
+
+        return ret
+
+    def forward(self, image, text, raw_text, idx, log_generation=None, return_sims=False):
+        """forward and calculate loss.
+
+        Args:
+            image (torch.Tensor): The input images. Shape: [B,T,C,H,W].
+            text (dict): TODO
+            idx (torch.Tensor): TODO
+
+        Returns: TODO
+
+        """
+        self.clip_contrastive_temperature()
+
+        vision_embeds = self.encode_vision(image)
+        text_embeds = self.encode_text(raw_text)
+        if return_sims:
+            sims = torch.nn.functional.normalize(vision_embeds, dim=-1) @ \
+                  torch.nn.functional.normalize(text_embeds, dim=-1).transpose(0, 1)
+            return sims
+
+        # calculate loss
+
+        ## VTC loss
+        loss_vtc = self.clip_loss.vtc_loss(
+            vision_embeds, text_embeds, idx, self.temp, all_gather=True
+        )
+
+        return dict(
+            loss_vtc=loss_vtc,
+        )
+
+    def encode_vision(self, image, test=False):
+        """encode image / videos as features.
+
+        Args:
+            image (torch.Tensor): The input images.
+            test (bool): Whether testing.
+
+        Returns: tuple.
+            - vision_embeds (torch.Tensor): The features of all patches. Shape: [B,T,L,C].
+            - pooled_vision_embeds (torch.Tensor): The pooled features. Shape: [B,T,C].
+
+        """
+        if image.ndim == 5:
+            image = image.permute(0, 2, 1, 3, 4).contiguous()
+        else:
+            image = image.unsqueeze(2)
+
+        if not test and self.masking_prob > 0.0:
+            return self.vision_encoder(
+                image, masking_prob=self.masking_prob
+            )
+
+        return self.vision_encoder(image)
+
+    def encode_text(self, text):
+        """encode text.
+        Args:
+            text (dict): The output of huggingface's `PreTrainedTokenizer`. contains keys:
+                - input_ids (torch.Tensor): Token ids to be fed to a model. Shape: [B,L].
+                - attention_mask (torch.Tensor): The mask indicate padded tokens. Shape: [B,L]. 0 is padded token.
+                - other keys refer to "https://huggingface.co/docs/transformers/v4.21.2/en/main_classes/tokenizer#transformers.PreTrainedTokenizer.__call__".
+        Returns: tuple.
+            - text_embeds (torch.Tensor): The features of all tokens. Shape: [B,L,C].
+            - pooled_text_embeds (torch.Tensor): The pooled features. Shape: [B,C].
+
+        """
+        device = next(self.text_encoder.parameters()).device
+        text = self.text_encoder.tokenize(
+            text, context_length=self.max_txt_l
+        ).to(device)
+        text_embeds = self.text_encoder(text)
+        return text_embeds
+
+    @torch.no_grad()
+    def clip_contrastive_temperature(self, min_val=0.001, max_val=0.5):
+        """Seems only used during pre-training"""
+        self.temp.clamp_(min=self.temp_min)
+
+    def build_vision_encoder(self):
+        """build vision encoder
+        Returns: (vision_encoder, vision_layernorm). Each is a `nn.Module`.
+
+        """
+        encoder_name = self.vision_encoder_name
+        if encoder_name == "vit_l14":
+            vision_encoder = clip_joint_l14(
+                pretrained=self.vision_encoder_pretrained,
+                input_resolution=self.inputs_image_res,
+                kernel_size=self.vision_encoder_kernel_size,
+                center=self.vision_encoder_center,
+                num_frames=self.video_input_num_frames,
+                drop_path=self.vision_encoder_drop_path_rate,
+                checkpoint_num=self.vision_encoder_checkpoint_num,
+            )
+        elif encoder_name == "vit_b16":
+            vision_encoder = clip_joint_b16(
+                pretrained=self.vision_encoder_pretrained,
+                input_resolution=self.inputs_image_res,
+                kernel_size=self.vision_encoder_kernel_size,
+                center=self.vision_encoder_center,
+                num_frames=self.video_input_num_frames,
+                drop_path=self.vision_encoder_drop_path_rate,
+                checkpoint_num=self.vision_encoder_checkpoint_num,
+            )
+        else:
+            raise NotImplementedError(f"Not implemented: {encoder_name}")
+            
+        return vision_encoder
+
+    def build_text_encoder(self):
+        """build text_encoder and possiblly video-to-text multimodal fusion encoder.
+        Returns: nn.Module. The text encoder
+
+        """
+        encoder_name = self.text_encoder_name
+        
+        if encoder_name == "vit_l14":
+            text_encoder = clip_text_l14(
+                pretrained=self.text_encoder_pretrained,
+                context_length=self.max_txt_l,
+                vocab_size=self.text_encoder_vocab_size,
+                checkpoint_num=0,
+                tokenizer_path=None if not 'tokenizer_path' in self.config.to_dict() else self.config.tokenizer_path
+            )
+        elif encoder_name == "vit_b16":
+            text_encoder = clip_text_b16(
+                pretrained=self.text_encoder_pretrained,
+                context_length=self.max_txt_l,
+                vocab_size=self.text_encoder_vocab_size,
+                checkpoint_num=0,
+                tokenizer_path=None if not 'tokenizer_path' in self.config.to_dict() else self.config.tokenizer_path
+            )
+        else:
+            raise NotImplementedError(f"Not implemented: {encoder_name}")
+
+        return text_encoder
+
+    def get_text_encoder(self):
+        """get text encoder, used for text and cross-modal encoding"""
+        encoder = self.text_encoder
+        return encoder.bert if hasattr(encoder, "bert") else encoder
+    
+    def get_text_features(self, input_text, tokenizer, text_feature_dict={}):
+        if input_text in text_feature_dict:
+            return text_feature_dict[input_text]
+        text_template= f"{input_text}"
+        with torch.no_grad():
+            # text_token = tokenizer.encode(text_template).cuda()
+            text_features = self.encode_text(text_template).float()
+            text_features /= text_features.norm(dim=-1, keepdim=True)      
+            text_feature_dict[input_text] = text_features
+        return text_features
+
+    def get_vid_features(self, input_frames):
+        with torch.no_grad():
+            clip_feat = self.encode_vision(input_frames,test=True).float()
+            clip_feat /= clip_feat.norm(dim=-1, keepdim=True)    
+        return clip_feat
+
+    def get_predict_label(self, clip_feature, text_feats_tensor, top=5):
+        label_probs = (100.0 * clip_feature @ text_feats_tensor.T).softmax(dim=-1)
+        top_probs, top_labels = label_probs.cpu().topk(top, dim=-1)
+        return top_probs, top_labels
+
+    
+if __name__ =="__main__":
+    tokenizer = _Tokenizer()

viclip_text.py

@@ -0,0 +1,305 @@
+import os
+import logging
+from collections import OrderedDict
+from pkg_resources import packaging
+from .simple_tokenizer import SimpleTokenizer as _Tokenizer
+
+import numpy as np
+import torch
+import torch.nn.functional as F
+from torch import nn
+import torch.utils.checkpoint as checkpoint
+import functools
+
+logger = logging.getLogger(__name__)
+
+
+# On P1, model extracted from https://huggingface.co/laion/CLIP-ViT-L-14-DataComp.XL-s13B-b90K
+MODEL_PATH = 'https://huggingface.co/laion'
+_MODELS = {
+    "ViT-L/14": os.path.join(MODEL_PATH, "CLIP-ViT-L-14-DataComp.XL-s13B-b90K", "vit_l14_text.pth"),
+    "ViT-B/16": os.path.join(MODEL_PATH, "CLIP-ViT-B-16-DataComp.XL-s13B-b90K", "vit_b16_text.pth"),
+}
+
+
+class LayerNorm(nn.LayerNorm):
+    """Subclass torch's LayerNorm to handle fp16."""
+
+    def forward(self, x: torch.Tensor):
+        orig_type = x.dtype
+        ret = super().forward(x.type(torch.float32))
+        return ret.type(orig_type)
+
+
+class QuickGELU(nn.Module):
+    def forward(self, x: torch.Tensor):
+        return x * torch.sigmoid(1.702 * x)
+
+
+class ResidualAttentionBlock(nn.Module):
+    def __init__(self, d_model: int, n_head: int, attn_mask: torch.Tensor = None):
+        super().__init__()
+
+        self.attn = nn.MultiheadAttention(d_model, n_head)
+        self.ln_1 = LayerNorm(d_model)
+        self.mlp = nn.Sequential(OrderedDict([
+            ("c_fc", nn.Linear(d_model, d_model * 4)),
+            ("gelu", QuickGELU()),
+            ("c_proj", nn.Linear(d_model * 4, d_model))
+        ]))
+        self.ln_2 = LayerNorm(d_model)
+        self.attn_mask = attn_mask
+
+    def attention(self, x: torch.Tensor):
+        self.attn_mask = self.attn_mask.to(dtype=x.dtype, device=x.device) if self.attn_mask is not None else None
+        return self.attn(x, x, x, need_weights=False, attn_mask=self.attn_mask)[0]
+
+    def forward(self, x: torch.Tensor):
+        x = x + self.attention(self.ln_1(x))
+        x = x + self.mlp(self.ln_2(x))
+        return x
+
+
+class Transformer(nn.Module):
+    def __init__(self, width: int, layers: int, heads: int, attn_mask: torch.Tensor = None,
+                 checkpoint_num: int = 0):
+        super().__init__()
+        self.width = width
+        self.layers = layers
+        self.resblocks = nn.Sequential(*[ResidualAttentionBlock(width, heads, attn_mask) for _ in range(layers)])
+
+        self.checkpoint_num = checkpoint_num
+
+    def forward(self, x: torch.Tensor):
+        if self.checkpoint_num > 0:
+            segments = min(self.checkpoint_num, len(self.resblocks))
+            return checkpoint.checkpoint_sequential(self.resblocks, segments, x)
+        else:
+            return self.resblocks(x)
+
+
+class CLIP_TEXT(nn.Module):
+    def __init__(
+            self,
+            embed_dim: int,
+            context_length: int,
+            vocab_size: int,
+            transformer_width: int,
+            transformer_heads: int,
+            transformer_layers: int,
+            checkpoint_num: int,
+            tokenizer_path:str=None,
+        ):
+        super().__init__()
+
+        self.context_length = context_length
+        if tokenizer_path:
+            self._tokenizer = _Tokenizer(tokenizer_path)
+        else:
+            self._tokenizer = _Tokenizer()
+
+        self.transformer = Transformer(
+            width=transformer_width,
+            layers=transformer_layers,
+            heads=transformer_heads,
+            attn_mask=self.build_attention_mask(),
+            checkpoint_num=checkpoint_num,
+        )
+
+        self.vocab_size = vocab_size
+        self.token_embedding = nn.Embedding(vocab_size, transformer_width)
+        self.positional_embedding = nn.Parameter(torch.empty(self.context_length, transformer_width))
+        self.ln_final = LayerNorm(transformer_width)
+
+        self.text_projection = nn.Parameter(torch.empty(transformer_width, embed_dim))
+    
+    def no_weight_decay(self):
+        return {'token_embedding', 'positional_embedding'}
+
+    @functools.lru_cache(maxsize=None)
+    def build_attention_mask(self):
+        # lazily create causal attention mask, with full attention between the vision tokens
+        # pytorch uses additive attention mask; fill with -inf
+        mask = torch.empty(self.context_length, self.context_length)
+        mask.fill_(float("-inf"))
+        mask.triu_(1)  # zero out the lower diagonal
+        return mask
+
+    def tokenize(self, texts, context_length=77, truncate=True):
+        """
+        Returns the tokenized representation of given input string(s)
+        Parameters
+        ----------
+        texts : Union[str, List[str]]
+            An input string or a list of input strings to tokenize
+        context_length : int
+            The context length to use; all CLIP models use 77 as the context length
+        truncate: bool
+            Whether to truncate the text in case its encoding is longer than the context length
+        Returns
+        -------
+        A two-dimensional tensor containing the resulting tokens, shape = [number of input strings, context_length].
+        We return LongTensor when torch version is <1.8.0, since older index_select requires indices to be long.
+        """
+        if isinstance(texts, str):
+            texts = [texts]
+
+        sot_token = self._tokenizer.encoder["<|startoftext|>"]
+        eot_token = self._tokenizer.encoder["<|endoftext|>"]
+        all_tokens = [[sot_token] + self._tokenizer.encode(text) + [eot_token] for text in texts]
+        if packaging.version.parse(torch.__version__) < packaging.version.parse("1.8.0"):
+            result = torch.zeros(len(all_tokens), context_length, dtype=torch.long)
+        else:
+            result = torch.zeros(len(all_tokens), context_length, dtype=torch.int)
+
+        for i, tokens in enumerate(all_tokens):
+            if len(tokens) > context_length:
+                if truncate:
+                    tokens = tokens[:context_length]
+                    tokens[-1] = eot_token
+                else:
+                    raise RuntimeError(f"Input {texts[i]} is too long for context length {context_length}")
+            result[i, :len(tokens)] = torch.tensor(tokens)
+
+        return result
+
+    def forward(self, text):
+        x = self.token_embedding(text)  # [batch_size, n_ctx, d_model]
+
+        x = x + self.positional_embedding
+        x = x.permute(1, 0, 2)  # NLD -> LND
+        x = self.transformer(x)
+        x = x.permute(1, 0, 2)  # LND -> NLD
+        x = self.ln_final(x)
+
+        # x.shape = [batch_size, n_ctx, transformer.width]
+        # take features from the eot embedding (eot_token is the highest number in each sequence)
+        x = x[torch.arange(x.shape[0]), text.argmax(dim=-1)] @ self.text_projection
+
+        return x
+
+
+def clip_text_b16(
+    embed_dim=512,
+    context_length=77,
+    vocab_size=49408,
+    transformer_width=512,
+    transformer_heads=8,
+    transformer_layers=12,
+    checkpoint_num=0,
+    pretrained=True,
+    tokenizer_path:str=None,
+):
+    # raise NotImplementedError
+    model = CLIP_TEXT(
+        embed_dim,
+        context_length,
+        vocab_size,
+        transformer_width,
+        transformer_heads,
+        transformer_layers,
+        checkpoint_num,
+        tokenizer_path,
+    )
+    # pretrained = _MODELS["ViT-B/16"]
+    # logger.info(f"Load pretrained weights from {pretrained}")
+    # state_dict = torch.load(pretrained, map_location='cpu')
+    # model.load_state_dict(state_dict, strict=False)
+    # return model.eval()
+    if pretrained:
+        if isinstance(pretrained, str) and pretrained != "bert-base-uncased":
+            pretrained = _MODELS[pretrained]
+        else:
+            pretrained = _MODELS["ViT-B/16"]
+        logger.info(f"Load pretrained weights from {pretrained}")
+        state_dict = torch.load(pretrained, map_location='cpu')
+        if context_length != state_dict["positional_embedding"].size(0):
+            # assert context_length < state_dict["positional_embedding"].size(0), "Cannot increase context length."
+            print(f"Resize positional embedding from {state_dict['positional_embedding'].size(0)} to {context_length}")
+            if context_length < state_dict["positional_embedding"].size(0):
+                state_dict["positional_embedding"] = state_dict["positional_embedding"][:context_length]
+            else:
+                state_dict["positional_embedding"] = F.pad(
+                    state_dict["positional_embedding"],
+                    (0, 0, 0, context_length - state_dict["positional_embedding"].size(0)),
+                    value=0,
+                )
+
+        message = model.load_state_dict(state_dict, strict=False)
+        print(f"Load pretrained weights from {pretrained}: {message}")
+    return model.eval()
+
+
+def clip_text_l14(
+    embed_dim=768,
+    context_length=77,
+    vocab_size=49408,
+    transformer_width=768,
+    transformer_heads=12,
+    transformer_layers=12,
+    checkpoint_num=0,
+    pretrained=True,
+    tokenizer_path:str=None,
+):
+    model = CLIP_TEXT(
+        embed_dim,
+        context_length,
+        vocab_size,
+        transformer_width,
+        transformer_heads,
+        transformer_layers,
+        checkpoint_num,
+        tokenizer_path,
+    )
+    if pretrained:
+        if isinstance(pretrained, str) and pretrained != "bert-base-uncased":
+            pretrained = _MODELS[pretrained]
+        else:
+            pretrained = _MODELS["ViT-L/14"]
+        logger.info(f"Load pretrained weights from {pretrained}")
+        state_dict = torch.load(pretrained, map_location='cpu')
+        if context_length != state_dict["positional_embedding"].size(0):
+            # assert context_length < state_dict["positional_embedding"].size(0), "Cannot increase context length."
+            print(f"Resize positional embedding from {state_dict['positional_embedding'].size(0)} to {context_length}")
+            if context_length < state_dict["positional_embedding"].size(0):
+                state_dict["positional_embedding"] = state_dict["positional_embedding"][:context_length]
+            else:
+                state_dict["positional_embedding"] = F.pad(
+                    state_dict["positional_embedding"],
+                    (0, 0, 0, context_length - state_dict["positional_embedding"].size(0)),
+                    value=0,
+                )
+
+        message = model.load_state_dict(state_dict, strict=False)
+        print(f"Load pretrained weights from {pretrained}: {message}")
+    return model.eval()
+
+
+def clip_text_l14_336(
+    embed_dim=768,
+    context_length=77,
+    vocab_size=49408,
+    transformer_width=768,
+    transformer_heads=12,
+    transformer_layers=12,
+):
+    raise NotImplementedError
+    model = CLIP_TEXT(
+        embed_dim,
+        context_length,
+        vocab_size,
+        transformer_width,
+        transformer_heads,
+        transformer_layers
+    )
+    pretrained = _MODELS["ViT-L/14_336"]
+    logger.info(f"Load pretrained weights from {pretrained}")
+    state_dict = torch.load(pretrained, map_location='cpu')
+    model.load_state_dict(state_dict, strict=False)
+    return model.eval()
+
+
+def build_clip(config):
+    model_cls = config.text_encoder.clip_teacher
+    model = eval(model_cls)()
+    return model

viclip_vision.py

@@ -0,0 +1,362 @@
+#!/usr/bin/env python
+import os
+import logging
+from collections import OrderedDict
+
+import torch
+from torch import nn
+from einops import rearrange
+from timm.models.layers import DropPath
+from timm.models.registry import register_model
+
+import torch.utils.checkpoint as checkpoint
+
+# from models.utils import load_temp_embed_with_mismatch
+
+logger = logging.getLogger(__name__)
+
+def load_temp_embed_with_mismatch(temp_embed_old, temp_embed_new, add_zero=True):
+    """
+    Add/Remove extra temporal_embeddings as needed.
+    https://arxiv.org/abs/2104.00650 shows adding zero paddings works.
+
+    temp_embed_old: (1, num_frames_old, 1, d)
+    temp_embed_new: (1, num_frames_new, 1, d)
+    add_zero: bool, if True, add zero, else, interpolate trained embeddings.
+    """
+    # TODO zero pad
+    num_frms_new = temp_embed_new.shape[1]
+    num_frms_old = temp_embed_old.shape[1]
+    logger.info(f"Load temporal_embeddings, lengths: {num_frms_old}-->{num_frms_new}")
+    if num_frms_new > num_frms_old:
+        if add_zero:
+            temp_embed_new[
+                :, :num_frms_old
+            ] = temp_embed_old  # untrained embeddings are zeros.
+        else:
+            temp_embed_new = interpolate_temporal_pos_embed(temp_embed_old, num_frms_new)
+    elif num_frms_new < num_frms_old:
+        temp_embed_new = temp_embed_old[:, :num_frms_new]
+    else:  # =
+        temp_embed_new = temp_embed_old
+    return temp_embed_new
+
+
+# On P1, model extracted from https://huggingface.co/laion/CLIP-ViT-L-14-DataComp.XL-s13B-b90K
+MODEL_PATH = ''
+_MODELS = {
+    "ViT-L/14": os.path.join(MODEL_PATH, "ViCLIP-L_InternVid-FLT-10M.pth"),
+    "ViT-B/16": os.path.join(MODEL_PATH, "ViCLIP-B-InternVid-FLT-10M.pth"),
+}
+
+
+class QuickGELU(nn.Module):
+    def forward(self, x):
+        return x * torch.sigmoid(1.702 * x)
+
+
+class ResidualAttentionBlock(nn.Module):
+    def __init__(self, d_model, n_head, drop_path=0., attn_mask=None, dropout=0.):
+        super().__init__()
+
+        self.drop_path1 = DropPath(drop_path) if drop_path > 0. else nn.Identity()
+        self.drop_path2 = DropPath(drop_path) if drop_path > 0. else nn.Identity()
+        # logger.info(f'Droppath: {drop_path}')
+        self.attn = nn.MultiheadAttention(d_model, n_head, dropout=dropout)
+        self.ln_1 = nn.LayerNorm(d_model)
+        self.mlp = nn.Sequential(OrderedDict([
+            ("c_fc", nn.Linear(d_model, d_model * 4)),
+            ("gelu", QuickGELU()),
+            ("drop1", nn.Dropout(dropout)),
+            ("c_proj", nn.Linear(d_model * 4, d_model)),
+            ("drop2", nn.Dropout(dropout)),
+        ]))
+        self.ln_2 = nn.LayerNorm(d_model)
+        self.attn_mask = attn_mask
+
+    def attention(self, x):
+        self.attn_mask = self.attn_mask.to(dtype=x.dtype, device=x.device) if self.attn_mask is not None else None
+        return self.attn(x, x, x, need_weights=False, attn_mask=self.attn_mask)[0]
+
+    def forward(self, x):
+        x = x + self.drop_path1(self.attention(self.ln_1(x)))
+        x = x + self.drop_path2(self.mlp(self.ln_2(x)))
+        return x
+
+
+class Transformer(nn.Module):
+    def __init__(self, width, layers, heads, drop_path=0., checkpoint_num=0, dropout=0.):
+        super().__init__()
+        dpr = [x.item() for x in torch.linspace(0, drop_path, layers)]
+        self.resblocks = nn.ModuleList()
+        for idx in range(layers):
+            self.resblocks.append(ResidualAttentionBlock(width, heads, drop_path=dpr[idx], dropout=dropout))
+        self.checkpoint_num = checkpoint_num
+
+    def forward(self, x):
+        for idx, blk in enumerate(self.resblocks):
+            if idx < self.checkpoint_num:
+                x = checkpoint.checkpoint(blk, x)
+            else:
+                x = blk(x)
+        return x
+
+
+class VisionTransformer(nn.Module):
+    def __init__(
+        self, input_resolution, patch_size, width, layers, heads, output_dim=None, 
+        kernel_size=1, num_frames=8, drop_path=0, checkpoint_num=0, dropout=0.,
+        temp_embed=True,
+    ):
+        super().__init__()
+        self.output_dim = output_dim
+        self.conv1 = nn.Conv3d(
+            3, width, 
+            (kernel_size, patch_size, patch_size), 
+            (kernel_size, patch_size, patch_size), 
+            (0, 0, 0), bias=False
+        )
+
+        scale = width ** -0.5
+        self.class_embedding = nn.Parameter(scale * torch.randn(width))
+        self.positional_embedding = nn.Parameter(scale * torch.randn((input_resolution // patch_size) ** 2 + 1, width))
+        self.ln_pre = nn.LayerNorm(width)
+        if temp_embed:
+            self.temporal_positional_embedding = nn.Parameter(torch.zeros(1, num_frames, width))
+        
+        self.transformer = Transformer(
+            width, layers, heads, drop_path=drop_path, checkpoint_num=checkpoint_num,
+            dropout=dropout)
+
+        self.ln_post = nn.LayerNorm(width)
+        if output_dim is not None:
+            self.proj = nn.Parameter(torch.empty(width, output_dim))
+        else:
+            self.proj = None
+        
+        self.dropout = nn.Dropout(dropout)
+
+    def get_num_layers(self):
+        return len(self.transformer.resblocks)
+
+    @torch.jit.ignore
+    def no_weight_decay(self):
+        return {'positional_embedding', 'class_embedding', 'temporal_positional_embedding'}
+    
+    def mask_tokens(self, inputs, masking_prob=0.0):
+        B, L, _ = inputs.shape
+
+        # This is different from text as we are masking a fix number of tokens
+        Lm = int(masking_prob * L)
+        masked_indices = torch.zeros(B, L)
+        indices = torch.argsort(torch.rand_like(masked_indices), dim=-1)[:, :Lm]
+        batch_indices = (
+            torch.arange(masked_indices.shape[0]).unsqueeze(-1).expand_as(indices)
+        )
+        masked_indices[batch_indices, indices] = 1
+
+        masked_indices = masked_indices.bool()
+
+        return inputs[~masked_indices].reshape(B, -1, inputs.shape[-1])
+
+    def forward(self, x, masking_prob=0.0):
+        x = self.conv1(x)  # shape = [*, width, grid, grid]
+        B, C, T, H, W = x.shape
+        x = x.permute(0, 2, 3, 4, 1).reshape(B * T, H * W, C)
+
+        x = torch.cat([self.class_embedding.to(x.dtype) + torch.zeros(x.shape[0], 1, x.shape[-1], dtype=x.dtype, device=x.device), x], dim=1)  # shape = [*, grid ** 2 + 1, width]
+        x = x + self.positional_embedding.to(x.dtype)
+
+        # temporal pos
+        cls_tokens = x[:B, :1, :]
+        x = x[:, 1:]
+        x = rearrange(x, '(b t) n m -> (b n) t m', b=B, t=T)
+        if hasattr(self, 'temporal_positional_embedding'):
+            if x.size(1) == 1:
+                # This is a workaround for unused parameter issue
+                x = x + self.temporal_positional_embedding.mean(1)
+            else:
+                x = x + self.temporal_positional_embedding
+        x = rearrange(x, '(b n) t m -> b (n t) m', b=B, t=T)
+
+        if masking_prob > 0.0:
+            x = self.mask_tokens(x, masking_prob)
+
+        x = torch.cat((cls_tokens, x), dim=1)
+
+        x = self.ln_pre(x)
+
+        x = x.permute(1, 0, 2)  #BND -> NBD
+        x = self.transformer(x)
+
+        x = self.ln_post(x)
+
+        if self.proj is not None:
+            x = self.dropout(x[0]) @ self.proj
+        else:
+            x = x.permute(1, 0, 2)  #NBD -> BND
+
+        return x
+
+
+def inflate_weight(weight_2d, time_dim, center=True):
+    logger.info(f'Init center: {center}')
+    if center:
+        weight_3d = torch.zeros(*weight_2d.shape)
+        weight_3d = weight_3d.unsqueeze(2).repeat(1, 1, time_dim, 1, 1)
+        middle_idx = time_dim // 2
+        weight_3d[:, :, middle_idx, :, :] = weight_2d
+    else:
+        weight_3d = weight_2d.unsqueeze(2).repeat(1, 1, time_dim, 1, 1)
+        weight_3d = weight_3d / time_dim
+    return weight_3d
+
+
+def load_state_dict(model, state_dict, input_resolution=224, patch_size=16, center=True):
+    state_dict_3d = model.state_dict()
+    for k in state_dict.keys():
+        if k in state_dict_3d.keys() and state_dict[k].shape != state_dict_3d[k].shape:
+            if len(state_dict_3d[k].shape) <= 2:
+                logger.info(f'Ignore: {k}')
+                continue
+            logger.info(f'Inflate: {k}, {state_dict[k].shape} => {state_dict_3d[k].shape}')
+            time_dim = state_dict_3d[k].shape[2]
+            state_dict[k] = inflate_weight(state_dict[k], time_dim, center=center)
+
+    pos_embed_checkpoint = state_dict['positional_embedding']
+    embedding_size = pos_embed_checkpoint.shape[-1]
+    num_patches = (input_resolution // patch_size) ** 2
+    orig_size = int((pos_embed_checkpoint.shape[-2] - 1) ** 0.5)
+    new_size = int(num_patches ** 0.5)
+    if orig_size != new_size:
+        logger.info(f'Pos_emb from {orig_size} to {new_size}')
+        extra_tokens = pos_embed_checkpoint[:1]
+        pos_tokens = pos_embed_checkpoint[1:]
+        pos_tokens = pos_tokens.reshape(-1, orig_size, orig_size, embedding_size).permute(0, 3, 1, 2)
+        pos_tokens = torch.nn.functional.interpolate(
+            pos_tokens, size=(new_size, new_size), mode='bicubic', align_corners=False)
+        pos_tokens = pos_tokens.permute(0, 2, 3, 1).flatten(0, 2)
+        new_pos_embed = torch.cat((extra_tokens, pos_tokens), dim=0)
+        state_dict['positional_embedding'] = new_pos_embed
+    
+    message = model.load_state_dict(state_dict, strict=False)
+    logger.info(f"Load pretrained weights: {message}")
+
+
+@register_model
+def clip_joint_b16(
+    pretrained=False, input_resolution=224, kernel_size=1,
+    center=True, num_frames=8, drop_path=0., checkpoint_num=0,
+    dropout=0.,
+):
+    model = VisionTransformer(
+        input_resolution=input_resolution, patch_size=16, 
+        width=768, layers=12, heads=12, output_dim=512,
+        kernel_size=kernel_size, num_frames=num_frames, 
+        drop_path=drop_path, checkpoint_num=checkpoint_num,
+        dropout=dropout,
+    )
+    # raise NotImplementedError
+    if pretrained:
+        if isinstance(pretrained, str):
+            model_name = pretrained
+        else:
+            model_name = "ViT-B/16"
+        
+        logger.info('load pretrained weights')
+        state_dict = torch.load(_MODELS[model_name], map_location='cpu')
+        load_state_dict(model, state_dict, input_resolution=input_resolution, patch_size=16, center=center)
+    return model.eval()
+
+
+@register_model
+def clip_joint_l14(
+    pretrained=False, input_resolution=224, kernel_size=1,
+    center=True, num_frames=8, drop_path=0., checkpoint_num=0,
+    dropout=0.,
+):
+    model = VisionTransformer(
+        input_resolution=input_resolution, patch_size=14,
+        width=1024, layers=24, heads=16, output_dim=768,
+        kernel_size=kernel_size, num_frames=num_frames, 
+        drop_path=drop_path, checkpoint_num=checkpoint_num,
+        dropout=dropout,
+    )
+    
+    if pretrained:
+        if isinstance(pretrained, str):
+            model_name = pretrained
+        else:
+            model_name = "ViT-L/14"
+        logger.info('load pretrained weights')
+        state_dict = torch.load(_MODELS[model_name], map_location='cpu')
+        load_state_dict(model, state_dict, input_resolution=input_resolution, patch_size=14, center=center)
+    return model.eval()
+
+
+@register_model
+def clip_joint_l14_336(
+    pretrained=True, input_resolution=336, kernel_size=1,
+    center=True, num_frames=8, drop_path=0.
+):
+    raise NotImplementedError
+    model = VisionTransformer(
+        input_resolution=input_resolution, patch_size=14, 
+        width=1024, layers=24, heads=16, output_dim=768,
+        kernel_size=kernel_size, num_frames=num_frames,
+        drop_path=drop_path,
+    )
+    if pretrained:
+        logger.info('load pretrained weights')
+        state_dict = torch.load(_MODELS["ViT-L/14_336"], map_location='cpu')
+        load_state_dict(model, state_dict, input_resolution=input_resolution, patch_size=14, center=center)
+    return model.eval()
+
+
+def interpolate_pos_embed_vit(state_dict, new_model):
+    key = "vision_encoder.temporal_positional_embedding"
+    if key in state_dict:
+        vision_temp_embed_new = new_model.state_dict()[key]
+        vision_temp_embed_new = vision_temp_embed_new.unsqueeze(2)  # [1, n, d] -> [1, n, 1, d]
+        vision_temp_embed_old = state_dict[key]
+        vision_temp_embed_old = vision_temp_embed_old.unsqueeze(2)
+
+        state_dict[key] = load_temp_embed_with_mismatch(
+            vision_temp_embed_old, vision_temp_embed_new, add_zero=False
+        ).squeeze(2)
+
+    key = "text_encoder.positional_embedding"
+    if key in state_dict:
+        text_temp_embed_new = new_model.state_dict()[key]
+        text_temp_embed_new = text_temp_embed_new.unsqueeze(0).unsqueeze(2)  # [n, d] -> [1, n, 1, d]
+        text_temp_embed_old = state_dict[key]
+        text_temp_embed_old = text_temp_embed_old.unsqueeze(0).unsqueeze(2)
+
+        state_dict[key] = load_temp_embed_with_mismatch(
+            text_temp_embed_old, text_temp_embed_new, add_zero=False
+        ).squeeze(2).squeeze(0)
+    return state_dict
+
+
+if __name__ == '__main__':
+    import time
+    from fvcore.nn import FlopCountAnalysis
+    from fvcore.nn import flop_count_table
+    import numpy as np
+
+    seed = 4217
+    np.random.seed(seed)
+    torch.manual_seed(seed)
+    torch.cuda.manual_seed(seed)
+    torch.cuda.manual_seed_all(seed)
+    num_frames = 8
+
+    # model = clip_joint_b16(pretrained=True, kernel_size=1, num_frames=8, num_classes=400, drop_path=0.1)
+    # logger.info(model)
+    model = clip_joint_l14(pretrained=False)
+
+    flops = FlopCountAnalysis(model, torch.rand(1, 3, num_frames, 224, 224))
+    s = time.time()
+    logger.info(flop_count_table(flops, max_depth=1))
+    logger.info(time.time()-s)
+    # logger.info(model(torch.rand(1, 3, num_frames, 224, 224)).shape)