How to Download Video with Blob URL in Python

Downloading a video from a Blob URL directly using Python’s `requests` library is not possible because Blob URLs are temporary, client-side references generated by the browser from data already loaded into its memory, not persistent server resources. To acquire the video data, you must interact with the browser context where the Blob URL was created. The most effective Python approach involves browser automation tools like Selenium or Playwright. You would navigate to the webpage using these tools, then use the automation framework to execute JavaScript within the browser. This JavaScript would access the Blob object associated with the URL (e.g., by fetching the Blob URL and converting the response to a Blob), read its data (e.g., as an ArrayBuffer or Base64 string), and then pass that data back to your Python script. Your Python code can then save this received binary data as a video file. Alternatively, if the original media segment requests that formed the Blob are still visible in the browser’s network activity, you might be able to identify and download those directly.

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