A method comprising: receiving , at data processing hardware , an audio-visual signal comprising audio data and image data , the audio data corresponding to speech utterances from a plurality of participants in a speech environment and the image data representing faces of the plurality of participants in the speech environment ; receiving , at the data processing hardware , a privacy request from a participant of the plurality of participants , the privacy request indicating a privacy condition associated with the participant in the speech environment ; segmenting , by the data processing hardware , the audio data into a plurality of segments ; for each segment of the audio data : determining , by the data processing hardware , from among the plurality of participants , an identity of a speaker of a corresponding segment of the audio data based on the image data ; determining , by the data processing hardware , whether the identity of the speaker of the corresponding segment comprises the participant associated with the privacy condition indicated by the received privacy request ; and when the identity of the speaker of the corresponding segment comprises the participant , applying the privacy condition to the corresponding segment ; and processing , by the data processing hardware , the plurality of segments of the audio data to determine a transcript for the audio data . receiving , at data processing hardware , an audio-visual signal comprising audio data and image data , the audio data corresponding to speech utterances from a plurality of participants in a speech environment and the image data representing faces of the plurality of participants in the speech environment ; receiving , at the data processing hardware , a privacy request from a participant of the plurality of participants , the privacy request indicating a privacy condition associated with the participant in the speech environment ; segmenting , by the data processing hardware , the audio data into a plurality of segments ; for each segment of the audio data : determining , by the data processing hardware , from among the plurality of participants , an identity of a speaker of a corresponding segment of the audio data based on the image data ; determining , by the data processing hardware , whether the identity of the speaker of the corresponding segment comprises the participant associated with the privacy condition indicated by the received privacy request ; and when the identity of the speaker of the corresponding segment comprises the participant , applying the privacy condition to the corresponding segment ; and determining , by the data processing hardware , from among the plurality of participants , an identity of a speaker of a corresponding segment of the audio data based on the image data ; determining , by the data processing hardware , whether the identity of the speaker of the corresponding segment comprises the participant associated with the privacy condition indicated by the received privacy request ; and when the identity of the speaker of the corresponding segment comprises the participant , applying the privacy condition to the corresponding segment ; and processing , by the data processing hardware , the plurality of segments of the audio data to determine a transcript for the audio data . <EOS>