No audio splitting for batch ASR providers (e.g. GLM-ASR 30s limit)

[dempsey-wen]

Problem

OpenLess sends the entire recording as a single WAV file to the ASR provider. There is no audio splitting/chunking logic — the audio buffer is accumulated and uploaded in one request:

fn consume_pcm_chunk(&self, pcm: &[u8]) {
    self.buffer.lock().extend_from_slice(pcm);
}

This works fine for streaming providers (volcengine WebSocket, Qwen realtime), but fails for batch/file-upload ASR providers that have a per-request duration cap.

Affected providers

Provider	Interface	Max duration
zhipu GLM-ASR	HTTP batch	30 seconds
volcengine	WebSocket streaming	No hard limit
Qwen ASR (realtime)	WebSocket streaming	No hard limit
Local Qwen3-ASR	Local inference	No limit

When using GLM-ASR and recording exceeds 30 seconds, the API rejects the request and transcription fails silently (no error shown in UI).

Suggested fix

• Detect the recording duration before sending.
• If the duration exceeds the provider's limit, split the audio into chunks (e.g. at silence boundaries), send each chunk separately, and concatenate the results.
• Alternatively, show a warning or auto-stop recording when approaching the limit for batch providers.

Environment

• OpenLess version: 1.3.2
• OS: Linux (Ubuntu, kernel 6.8.0)

[H-Chris233]

Okay, we got it, we will fix it.

[H-Chris233]

We have fixed the question, but we need your test In the next beta release.Thanks!