How can I automatically skip unsupported file types like .mp4 in Langchain's GoogleDriveLoader?

Below is an example answer of how you might work around the issue:

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Currently there isn’t a built‐in argument (like a "skip_file_types" parameter) on GoogleDriveLoader to ignore specific file types, so you’ll need to add a custom filtering step. You have a couple of options:

1. Pre‑Filter the Files Before Loading
   One solution is to first list all files in the target folder and then filter out unwanted types (for example, files with an ".mp4" extension or their corresponding MIME type). Once you have a filtered list, you can process only supported files. For example:

   PYTHONCopied
   from langchain.document_loaders import GoogleDriveLoader
   from unstructured.file_utils import get_file_mimetype  # adjust import based on your setup
   
   # First, list file metadata (you might need to tweak this based on your version)
   base_loader = GoogleDriveLoader(
       folder_id=folder_id,
       token_path="token.json",
       recursive=True
   )
   all_files = base_loader.get_all_files()
   
   # Filter out files with unwanted mime types or extensions
   supported_files = []
   for file in all_files:
       # Check file extension or mime type; adjust condition as needed.
       # For example, skip mp4 files:
       if file.get('mimeType') == 'video/mp4' or file.get('name', '').endswith('.mp4'):
           continue
       supported_files.append(file)
   
   # Now, for each file in supported_files, you can load it using your file loader.
   documents = []
   for file in supported_files:
       # You can call a helper function that instantiates your file_loader_cls (UnstructuredFileIOLoader)
       # with file_loader_kwargs. You might need to implement something like:
       doc = base_loader.load_file(file)  # assuming load_file handles a single file
       documents.append(doc)

2. Subclass or Wrap the Loader
   Alternatively, you can subclass GoogleDriveLoader and override its file loading logic to automatically skip unsupported file types. For example:

   PYTHONCopied
   from langchain.document_loaders import GoogleDriveLoader
   
   class FilteringGoogleDriveLoader(GoogleDriveLoader):
       def load(self):
           documents = []
           for file in self.get_all_files():
               # Skip the file based on a condition – here we check for .mp4
               if file.get("mimeType") == "video/mp4" or file.get("name", "").lower().endswith('.mp4'):
                   self.logger.warning(f"Skipping unsupported file: {file.get('name')}")
                   continue
               try:
                   doc = self.load_file(file)  # or however the base class processes a single file
                   documents.append(doc)
               except Exception as e:
                   self.logger.warning(f"Failed to load {file.get('name')}: {e}")
           return documents
   
   # Then use your custom loader
   loader = FilteringGoogleDriveLoader(
       folder_id=folder_id,
       token_path="token.json",
       file_loader_cls=UnstructuredFileIOLoader,
       file_loader_kwargs={"mode": "elements"},
       recursive=True,
   )
   docs = loader.load()

Both approaches let you load files like DOCX and Excel (which are supported) while skipping unsupported file types such as MP4s. This way, you automate the filtering process without needing to manually remove the unsupported file from your Drive folder.

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These solutions allow you to work around the error by preemptively ignoring unsupported file types during ingestion.