Fact · Transcription
1 to 8channels
For multichannel recognition, Google's Speech-to-Text API accepts from 1 to 8 channels for OGG_OPUS audio, so OGG_OPUS is one of its supported audio encodings.
Checked against its source on October 17, 2026
In the source's own words
“Valid values for LINEAR16, OGG_OPUS and FLAC are 1 - 8”
RecognitionConfig: Speech-to-Text v1 REST reference, Google Cloud, 2026, audioChannelCount field description.
Open the original- What it measures
- The API takes the audio encoding as a separate setting. The channel count field says that its valid values depend on the encoding, and OGG_OPUS is among the encodings named.
- What it does not show
- The passage shows that OGG_OPUS is a supported encoding with that channel range. It does not say whether an OGG file made by a particular app uses the Opus codec.