feat: mid-stream language_codes updates, Opus streaming encodings, sync connection pre-warming (v0.64.25)#211
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Sync from the internal repo (2026/07/03), releasing v0.64.25.
Streaming
language_codesmoved toStreamingSessionParameters, so it can now be updated mid-stream viaclient.set_params(StreamingSessionParameters(language_codes=["es"]))— no reconnect needed. Pass[]to clear steering and restore the model's default multilingual code-switching (Universal-3.5 Pro Streaming only). Connect-time behavior is unchanged.language_codesconnect parameter (recommended): steers transcription toward a set of languages while allowing native code-switching among them. The singularlanguage_codeis deprecated (still supported) — pass a single-element list instead.encoding="opus"(raw packet-per-message) andencoding="ogg_opus"accept compressed Opus audio;sample_rateis ignored for both since the Opus stream is self-describing.Sync transcription
SyncTranscriber.warm(): pre-opens the HTTP connection so the firsttranscribe()skips DNS/TCP/TLS setup on the critical path. Newsettings.keepalive_expirycontrols how long idle pooled connections are kept.Tests
set_params, connect-timelanguage_codes, Opus encodings, and connection pre-warming.