NotebookLM
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Troubleshooting of NotebookLM[edit]
NotebookLM Workaround: Large Video to MP3 Conversion[edit]
Problem Description:
The original 2.3GB video file exceeded NotebookLM's strict 200MB limit for local uploads. As stated in their official documentation: "The current limit is 500,000 words per source or up to 200MB for local uploads."[1] (每個檔案大小不得超過 200MB)
Solution:
Use FFmpeg to convert the video to MP3 audio. Result: The file size was reduced to 126MB, successfully meeting the limit.
1. Download & install Download FFmpeg
2. Open the terminal
3. Command Used:
ffmpeg -i input_video.mp4 -vn -c:a libmp3lame -q:a 2 output_audio.mp3
Breakdown of flags:
- -i input_video.mp4: The input file.
- -vn: Skips the video stream (No Video).
- -c:a libmp3lame: Specifies the audio codec to use (LAME is standard for MP3).
- -q:a 2: Sets Variable Bit Rate (VBR) quality. 2 averages around 190 kbps (high quality). Use 0 for best quality or 4 for standard.
- output_audio.mp3: The name of the new file.
NotebookLM Error: Problem with Uploading YouTube URL[edit]
Problem Description:
When attempting to upload YouTube URL to NotebookLM, users encounter the error message: "Something went wrong, Please try again later."
Known Causes:
Based on user reports, this error typically occurs with:
- Videos that are too recent
- Non-public or private videos
- Content with access restrictions
Workarounds Solutions:
1. Convert video to transcript:
- Extract text content from video using openai/whisper: Robust Speech Recognition via Large-Scale Weak Supervision or othe Speech-To-Text tools
- Upload the resulting transcript file to NotebookLM
2. Convert video to images, then to PDF:
- Extract video frames as individual images
- Compile images into a single PDF document
- Upload the PDF to NotebookLM using Web Video Frame Toolkit provides both conversion options mentioned above.
NotebookLM Error: Excel File Format Not Supported[edit]
Problem Description:
When attempting to upload an Excel file directly to NotebookLM, users encounter an error due to unsupported file format.
Workaround Solution:
1. Upload via Google Drive:
- Upload the Excel file to Google Drive
- Return to NotebookLM and select Google Drive as the source
- Choose the previously uploaded Excel file
Known Limitations:
- Large files may still fail to import even via Google Drive
- Files of 4MB or larger are known to cause import issues
If Import Still Fails:
- Reduce the number of data rows
- Remove unnecessary columns to decrease file size
NotebookLM Error: SRT File Format Not Supported[edit]
Problem Description: When attempting to upload an SRT ((SubRip Subtitle file) directly to NotebookLM, users encounter an error due to unsupported file format.
Workaround Solution:: Rename File Extension
- Locate the SRT file on your device
- Rename the file extension from .srt to .txt
- Upload the renamed .txt file directly to NotebookLM
Why This Works:
- SRT is a plain text format — changing the extension does not alter the content
- NotebookLM accepts .txt files, so renaming allows the file to pass format validation