StreamRecorder.Error 6 when stopRecording after long live (90m) – video not saved (30–40% cases)

[noho501]

Hi,

I’m using HaishinKit to live stream and record video.
When streaming around 90 minutes, the recording sometimes (30–40% cases) fails to save with this error:

HaishinKit.StreamRecorder.Error 6

I already added retry logic to call stopRecording() again, but it still fails.
Even when I use:

recorder.setMovieFragmentInterval(60)

it sometimes only saves about 60 seconds instead of the full 90 minutes.

Here’s how I stop recording:

Task {
    do {
        let url = try await recorder.stopRecording()
    } catch {
        await MainActor.run {
            self.alertErrorSavingVideo(error: error.localizedDescription)
        }
    }
}

I need a safe and reliable way to ensure the recorded video is saved completely, even for long sessions (90m+).
Any suggestion or workaround?

[shogo4405]

1. Unfortunately, I don’t have any experience with the recording feature, so I can’t offer any advice on that.
2. You can retrieve errors from AVAssetWriter using a method like the one below. I’d like to know what kind of error you’re encountering.

case .failedToFinishWriting(let error): 
print(error)

HaishinKit.swift/Examples/iOS/PublishViewModel.swift

Lines 84 to 95 in 339a7b5

	} catch let error as StreamRecorder.Error {
	switch error {
	case .failedToFinishWriting(let error):
	self.error = error
	if let error {
	logger.warn(error)
	}
	default:
	self.error = error
	logger.warn(error)
	}
	}

[noho501]

Thank you! I’ll try it and let you know.

[noho501]

Hi,

When recording a live session, sometimes the recording fails to save properly and shows the following errors:

- The operation could not be completed.
- Operation Interrupted.

This happens 100% of the time when the app goes to the background (e.g., switching apps).
In some cases, it also occurs without leaving the app, seemingly at random during a long session.

I’ve also tried setting:

recorder.setMovieFragmentInterval(10)

With this configuration, the file only saves the first 50–60 seconds, and the rest of the video is lost.

Previously, when using LFLiveKit, this issue never occurred.
You might want to take a look at how LFLiveKit handles local recording — it seems to manage AVAssetWriter states differently to avoid interruptions:

https://github.com/LaiFengiOS/LFLiveKit/blob/master/LFLiveKit/Vendor/GPUImage/iOS/GPUImageMovieWriter.m#L321

Thanks & best regards,

[shogo4405]

This one, I don’t really understand.

[noho501]

Thank you. I’ll try to find a proper solution.
If I’m lucky enough to make it work, I’ll share the results with you.
Thanks for your support and your time.