Recent YouTube Videos Inaccessible via Gemini-3-Flash-Preview API

Gemini API
,
1

I’m experiencing issues with gemini-3-flash-preview when accessing YouTube URLs for content summarization. Videos less than one month old fail to load correctly—thumbnails display, but titles are often incorrect or the request times out. Videos older than one month and YouTube Kids content are unaffected.

Testing the same URLs in Gemini’s native chatbot yields identical results, indicating that this issue is not specific to my application.

This inability to reliably access recent YouTube content within Google’s ecosystem represents a significant limitation. I request that Google investigate and resolve this issue, and welcome feedback from others who may have encountered similar problems.

3

Hi @Alistair_Campion ,

To help us diagnose this issue, could you please provide minimal reproducible code along with your generationConfig and the JSON schema you are using. If possible, please include a screenshot of the output and the response metadata.

5

Hi Sonali,

Thank you for your rapid turnaround on this issue.

I have attached a Bug Report (detailing the information you require) and the JSON data etc. as a file attachment.

Please do not hesitate to contact me again if you require further information.

Kind regards

(Attachment repro_gemini_issue.ts is missing)

(Attachment Bug Report_Google team.pdf is missing)

6

Hi Sonali,

What is your preferred method to send you these files? Do you have a private email box on the developer forum? Even a Gmail account :smiley:

repro_gemini_issue.ts: Sorry, the file you are trying to upload is not authorized (authorized extensions: jpg, jpeg, png, gif).
Bug Report_Google team.pdf: Sorry, the file you are trying to upload is not authorized (authorized extensions: jpg, jpeg, png, gif).

8

Hi Sonali, i sent you the detail you requested via this messaging medium … I didn’t hear back. Can you confirm you received this information? Cheers Alistair

10

Bumping this, we have also been experiencing significant delays in responses + huge increases in 500 internal errors without any finishReason provided. We are executing the same operations as we have been doing for months but since 12/28 there’s been a 10x or more increase in errors, and these errors do not provide any detail.

As an example, when asking for a video of summary of a < 3min video like https: //www. youtube. com/ watch? v=daw0YsL6Fnk we get this error response:

{
  "candidates": [
    {
      "content": {}
    }
  ],
  "usageMetadata": {
    "promptTokenCount": 50052,
    "totalTokenCount": 50052,
    "promptTokensDetails": [
      {
        "modality": "TEXT",
        "tokenCount": 517
      },
      {
        "modality": "VIDEO",
        "tokenCount": 44184
      },
      {
        "modality": "AUDIO",
        "tokenCount": 5351
      }
    ]
  }
}

with no additional detail. As I also mentioned, previously videos like this would asses very quickly but now they can take upwards of 10min to receive a response. We’ve tried on both Gemini 2.5 Flash + Flash Lite and Gemini 3 and are continuing to experience issues. It is significantly hampering our services.

What is going on?