Request for paid code review – HaishinKit + Meta Wearables SDK (severe FPS drop)

[QuentinGrange]

Hello,

I’m currently working on an Android Expo module that integrates the Meta Wearables SDK (Ray-Ban Meta Smart Glasses) and uses HaishinKit to stream the glasses video feed via RTMP.

I’m reaching out because I’m facing a severe and blocking performance issue, and I’d really appreciate your expertise to help determine whether this comes from my integration or from a limitation in the Meta SDK itself.

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Summary of the issue

• The Meta SDK provides video frames in I420 format (~24 FPS when idle).
• As soon as any MediaCodec encoder (video or audio, hardware or software) is started on the device — even if it processes a completely different source — the Meta video stream drops immediately to ~1–3 FPS.
• This happens before frames are fed to HaishinKit and even if the encoder does nothing.
• I reproduced the issue with:
  • HaishinKit
  • RootEncoder
  • Hardware & software H264 encoders
• CPU usage, thread priority, bitrate, resolution, and FPS reductions do not change the behavior.

From all tests so far, it looks like the Meta SDK might be internally throttling its video stream when encoder activity is detected, but I’d really like a second opinion from someone who deeply understands Android media pipelines and HaishinKit internals.

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What I’m asking

• A code review of my Android integration (HaishinKit side + MediaCodec usage)
• Your opinion on whether:
  • I’m misusing HaishinKit
  • There’s a known Android media pipeline pitfall here
  • Or this is very likely a Meta SDK limitation / bug

I already prepared a minimal reproduction and a detailed technical report that I sent to Meta, which I can share along with:

• A GitHub repository
• Logs
• A stripped-down sample project

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Compensation

I’m of course happy to pay for your time and expertise (hourly or fixed — whatever you prefer).

If this sounds interesting to you, please let me know:

• Whether you’d be open to reviewing it
• Your preferred format (async review, call, etc.)
• Your rate

Thanks a lot for your work on HaishinKit — it’s been extremely valuable for Android and iOS streaming projects.

[QuentinGrange]

@shogo4405

[shogo4405]

I’m afraid I won’t be able to help in this case.

With the Ray-Ban Meta Smart Glasses, it’s difficult to determine the issue from the code alone—I would need to have the device on hand to debug it properly. Unfortunately, since the device is not available in Japan, I’m unable to test or verify it.

I understand that live streaming on Instagram is supported, so what you’re trying to achieve should be possible in principle. However, without access to the actual device, it’s hard to identify what might be going wrong.
Hello,

Thank you.

[QuentinGrange]

Actually, you don’t need a physical device to start developing — a simulator is provided if you don’t have the glasses.

I’d like you to audit my code so you can confirm that everything is implemented correctly. You shouldn’t need to write much code.

The development environment is straightforward: in about 10 minutes, you can clone the repository and start testing the app.

I’m willing to pay $100/hour for your time.

[QuentinGrange]

Just to clarify: the codebase is relatively small (around 1,000 lines). It’s not a big project, and it shouldn’t be complicated to get into or understand.

[shogo4405]

Understood. I can take this on as a code review for USD 100 per session.
If additional time or costs are required, we can decide how to proceed based on mutual agreement.

Please contact me at the email address listed on
https://github.com/shogo4405